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Inphinite When we were thinking of a name for our magazine this year, “Inphinite” just popped into my head. Not “infinite” but “Inphinite”. I’m sure you’re wondering why it’s spelt wrong but it’s actually a mishmash of “infinite” and “phi”. Infinite, Latin for “unbounded-ness”, means everything; a quantity without bounds or ends, endless. And phi is its complete opposite; it means ‘nothing’. And that is what science is. Science is not tangible; it can’t be held in our hands, yet it is everywhere. Everything we see, touch, taste and feel is science. From the coding that makes blackberry messenger work to why the chilli flakes on a pizza taste spicy; how the brain interprets love to how the satellite orbiting the earth interprets signals sent from miles away in Florida; why we can see rays of light but we can’t see waves of electricity, how radio waves turn into sound and how proteins get digested. Everything around us is science and without it, nothing exists. It literally “runs in our blood” and is the “light” of our lives. Science, today, is the world on our fingertips and its future is our canvas. We can make it whatever we want it to be. So, the cover of our magazine tries to show a glimpse of just how vast science is. It attempts to capture the present; what we are doing with the clay that has been put in our hands. It depicts how Carbon dioxide is slowly taking over our earth, the loss of the true spirit of sportsmanship as one takes drugs to do better, and the concept of artificial intelligence. The cover also envisages the future, our future. It shows the possibility of plant based plastics that use plant fibres to replace objects like plastic bottles. It depicts the skyline of a future city that’s already being built in places like Dubai, Japan and China. It illustrates our earth burning up, symbolic of our growing greed and lack of care for the planet. It shows the evolution of man, from an upright individual, free of all sorts of aches and pains, who slowly starts slouching because of a laid back lifestyle and diseases like arthritis and osteoporosis. He finally reaches that point where he begins to rely on the computer completely; the ideas we have in our mind have slowly been replaced by the ideas represented on our computer screen. We want to bring a new perspective into the way we look at the world, has this situation led us to everything (infinite) or nothing (phi)? “The possibilities are Inphinite.” Mira Rajput (Cover Design) One Through the Years... CV Raman ONE One day in 1903, when Professor Eliot of Presidency College, Madras , saw a young boy of 13 or 14 years in his B.A. class in English He thought that the child might have strayed into the room by mistake, the Professor asked, "Hi, boy... there... why are you here?" "Mm... Sir," the boy stammered. "Are you a student of the B.A. class?" "Yes Sir," the boy answered. "Your name?" "C. Venkata Raman." At the age of 15, CV Raman completed his BA at the top of his class. His academic brilliance was obvious since the very beginning..... Vasant Valley School Science Magazine Issue XIII -i- -5-ii- A Note From We’ve all had crazy childish dreams; ideas born out of imaginations gone wild. We’ve climbed up the slide as fast as possible to run away from dinosaurs, not stepped on the red tiles while walking pretending they were lava, made absurd drawings hoping they would come to life, sat on carpets pretending they were flying or done something else which others might have considered completely ridiculous. But with age comes maturity and “sensibility”. When we are told often enough not to be silly, we try to change the way we think and imagine. We learn to stick to reality, believe only in the facts and silence that part of our heads that tells us that the strange rock on the ground has come from another world. We’re made to believe that science is a factual subject, completely logical in its approach, with no room for improvisation. However, if we all believe only what we see, then where is the scope for progress? Most inventors and visionaries in the past have been people whom no one could understand; people who let their creative spirits soar and in one way or another created something: an idea, a concept, an object which had never been thought of before. So, the truth is, just because something is crazy doesn’t mean it’s impossible. We are all inventors in our own right, with random ideas that deserve to be let out of the closet, no matter how stupid they seem. With this belief, we decided to explore the possibilities for our future and all the ways it has been visualized; by people, movies, books, tv shows and different areas of research. Everyone has something to say about the the Editor future, and we believe every thought is worth listening to. There are no easy solutions to the problems faced by our world today. As we look ahead, we don’t know what to expect. We all want a better day tomorrow and a brighter future, and we can have all that we hoped for and more. The future is a piece of clay in our hands; it is up to us what we want to make with it. The science of our lives is as much about creativity as it is about rationality. Everything around us is food for thought, even the baffling inventions we see on Phineas and Ferb or the strange contraptions from Tom and Jerry. We believe that the future of science is crazy science. The more absurd the idea, the more probable it is. No one can say what our future will be, we can only think of what we want it to be. So lets make it as exciting as we can, the possibilities are in(phi)nite, they can be nothing and everything at the same time… Ramya Ahuja -iii- A Letter From Last Year’s Editor On one of the first mornings of class eleven I stood in assembly, sleepy and half listening to the morning’s announcements, only to hear Ms. Krishnan call my name as Editor of the science magazine. In my excitement of being appointed editor at that time I most certainly underestimated the hard work, the challenges and the sense of accomplishment that came with the post. Our editorial board was smaller than those of the previous years and we had our work cut out for us. Our attempts at collecting articles came with varied results. Those that were allotted the junior classes stumbled upon success far more easily than others who endlessly waited for articles which would most definitely be given up that coming Monday! Once we had collected articles, I met with every editor’s worst enemy – plagiarism! Much to my surprise, many of the articles I received were picked off of the Internet. While this reduced the material we had for the magazine, we put our minds together and decided to have competitions to encourage more articles and new ideas. We realized that the first ever gadget making competition was a huge success as we struggled to contain the participants in the physics lab. Once the editing was complete, we met with monstrous task of collating and designing the magazine. Months after editing and chasing deadlines, I had in my hands the first copy of ‘Ethos’. While ‘Ethos’ was a outcome of all our hard work, it would have been impossible without some help. Mrs. Johar and Mrs. Vohra were a constant source of a support even though we continually tested their patience by extending deadlines. Mrs. Banerjee would always greet me with a smile and a number of articles every time I visited Junior School in break and Mrs. Malhotra was always generous with her advice on the layout of the magazine. My experience as Editor of ‘ONE’ was like no other. My advice to all future editors is to take advantage of this wonderful opportunity and enjoy every moment of it. It might sound clichéd but, from my own experience, standing on stage releasing the magazine on Science day, makes all the Saturday’s spent in school and all the sleepless nights spent proof reading absolutely worth it. Vaasvi Goyal -iv- Editor: Ramya Ahuja Co-Editor: Varun Datta Editorial Board Advika Gupta Akarshita Dhawan Amar Singh Dhingra Anahitaa Bakshi Dhruv Singh Gautam Nagpal Ishita Sethi Mira Rajput Pihu Yadav Shaurya Kumar Shoubhik Ghoshal Special Thanks Tushar Nath Rishika Dhawan Pranav Kochhar Ms. Charu Johar Ms. Ashita Puri Ms. Malvika Vohra Mr. Atul Datta -v- The World Is Our Canvas Let There Be Light Ramya Ahuja 2060 Ishita Sethi 2 The Invisibility Cloak Pihu Yadav 10 Plastic: Which Angel Will Bring An End To This Monster? Advika Gupta 12 6 15 Energy Crisis Aananya Banaik 17 Energy Tomorrow Shubhee Rawal 19 Nuclear Energy Viraj Nanda 24 An Alternate Route Shoubhik Ghoshal 27 Artificial Intelligence Neel Mehdiratta 34 The Large Hadron Collider Aayush Sharma -vi-9- Cold Fusion Amar S. Dhingra 36 Antimatter Shreya Chadha 38 PCR-A Magical Genie Vandita Khanna 40 Are Aliens Real Or Not? Aditi Banerjee 41 Fun Facts!! Shome Advani 46 Synthetic Life- Pros and Cons Vaasvi Goyel 48 The Ignite Experience Kaamya Sharma & Riya Kothari 51 The World At Our Fingertips Where Did The Earth Come From? Krishna Singh 62 Evolution: Yet No Solution... Akarshita Dhawan 65 What Do You Choose To Believe? Rishabh Prakash 66 -vii-10- Matter Sukoon Dinodia 69 Plasma: The Fourth State Of Matter Yashitha Jeet 70 The Bose - Einstein Condensate Gautam Nagpal 71 Kinetic Theory Nikita Dhawan 78 Simple Machines Crossword Krishna Singh 79 The Theory Of Everything Anirudh Sethi 81 Relativity Shaurya Kumar 84 Pollution Aastha Kamra & Anjani Gupta 87 Maritime Safety And Pollution Aishwarya Chawla 88 Volcanic Ash In Iceland Sanjari Kalantri 90 The BP Oil Spill Nikita Dhawan 92 -viii-11- The Slick Crushers Anahitaa Bakshi 93 Junk Food Maayashree Goel & Prithvi Singh 95 Harmful Soft Drinks Indraneel Roy 97 Doping- The Menace In Sports Navia Dayal 98 Extra Sensory Perception: The Sixth Sense Anjani Gupta 100 102 Did You Know? Ashrant Kohli Multiple Intelligences & Career Planning Shreyas Kadaba 103 106 Strategies for the Survival of the Tiger and its Habitat Vandita Khanna The End Is Near Will The World End In Fire Or Ice? Dhruv Singh & Amar Dhingra 110 -ix-10- -11- A Section On Our Future -1- Let There Be Light Let there be Light “Finish all the food on your plate. If you waste it, God will get angry.” Every time his mother reprimanded him for being a fussy eater, with this classic line, that omnipresent three letter word never failed to kindle Palini’s curiosity. The ambiguous concept of a God, or many Gods, as some religions would have us believe, had intrigued him since his 2-year old mind had been introduced to it. This idea puzzled all little children, with each creating his or her own fantasy of a being to be feared, revered or loved; till they grew up into adults with no desire to question the accepted. But Palini was different. Throughout his childhood, he would sneak one of his family cars out of the holding and steer it clumsily through the clouds. The ignition booster on full throttle was his attempt to propel the vehicle into space, to Andromeda. Flying over the crystal domes of laboratories in the region with his heat analyzer on, he’d keep his eyes peeled for an abnormally intense heat source, indicating the presence of God somewhere. The rest of the time, little Palini could be found with his nose buried in books with actual paper and ink in the hope that his ancestors could shed some light on the subject. On the Mocaso family’s annual trips to other Moons he’d teleport any inter esting material he found to the secret stash of ‘clues’ he kept in his room. Such was the nature of Palini’s obsession with God. Recently , some androids and other slightly delusional cyborgs of Palamanio had been making claims of becoming aware of the existence of certain particles which could control the environment, both physical and biological, around them. They could influence the creation of other things as well. These mysterious particles were supposed to be God. The almost adult Palini however had not paid much heed to these stories, being completely preoccupied with preparations for his school’s Science Fair. For years he’d been attempting to get the better of Carlaka, his once best friend, who sabotaged other’s projects, but Palini always ended up in second place. The morning after the fair, he would always complain to God, whatever that may be, about the unfairness of it all. But some people just don’t change. For his birthday, Palini’s parents had gifted him his very own hovercraft with access to the best research facility in Cudgensville. It was the night before D-day and he had been pottering around the lab all day to synthesize his Platinum-Catamanum nanocrystals which he believed could function as nano-turbines more efficient than the present radioactive Francium ones But there seemes to be a critical flaw in the procedure he had designed; it wasn’t getting him anywhere. He didn’t want to consult with any of the resident robots either, for fear that they might tip Carlaka off. As it was nearing the time when the systems would shut down and he would have to call it a night, he was getting desparate. For the synthesis, he required a number of different materials he’d procured from around the globe. But he had realized his answer could not be found with the tried and tested. It was -2- Let There Be Light time to put his secret stash to use. While he could go on for days without sleep, his worries had exhausted him. Disregarding previous calculations, he added his favorite materials in a random order, only controlling the physical conditions like temperature and pressure. But when he looked down at the set up from his perch on the ceiling something seemed different, odd. He glanced at his foot- he had been trying to create. It seemed impossible to explain what had happened but his eyes had bore witness. The results of the experiment were staring him in the face. His spine tingled ad he realized he had discovered the ‘God Particle’. Looking up and around the room he was in, he suddenly realized that he had also seen God. Everything and every being in the vicinity were frozen in their position, all motion ceased; only the ‘hand of God’ could possibly exercise such supreme control. He continued to gawk as time restarted and all was restored to normal around him, for life would never be the same for him again. It was time to head home to a good night’s sleep. Palini knew the results of the fair next day would be in his favour. They had to be, this time God was on his side. Ramya Ahuja 12-B wear and realized he had fallen asleep and lost track of time, when he noticed they had become a pale blue colour, indicating a level of inactivity only possible during his sleep. All of a sudden, the institute’s sun too, bailed on him. The temperature of his set up would rapidly fall, and the results could be catastrophic. His mind drifted to drawings he had seen of something called lamps used by the ancients. As he traced it in the air, it was created before his eyes. Glancing around the illuminated chamber, in absolute amazement he realized that it was his apparatus which was giving out a mysterious chrome light and diffusing calm in the room. However, it seemed like there was nothing inside the container. But next to it, was a corked flask with the nanoparticles -3- Doctor Who The Doctor is an alien adventurer, a 'Time Lord', seemingly the last of his race, who travels through time and space in his TARDIS battling evil wherever he finds it. Dr. Who’s Amazing Gadgets 1. Sonic Screwdriver – A screw driver that can give you information on nearly anything and control anything mechanical. 2. The “TARDIS”- A time traveling police box 3. The Fob Watch - a watch that stores memories of past lives 4. Psychic Paper – A paper which writes down your thought when you focus on it -4- -5- 2060 If I woke up 50 years from now, what would the world be like.... “Life and Intelligence must never stagnate, it must reorder transform and transcend its limits in an unlimited progressive process. Our goal is the exuberant and dynamic continuation of this unlimited process.” - Max More, strategic futurist At the time of its emergence more than three centuries ago, science was a reaction to the imaginative speculation, superstition and mysticism that dominated thought and belief in a previous age. Science countered these earlier belief systems by establishing rationality, systematic methodology, predictability and repetition as fundamental principles in the quest for knowledge. And in a world like ours, dominated by science and fast paced development, 50 years is a long time. Even after 5 years a country changes so much that it is tough to recognise! So after 50 years, I would expect to find a lot of different things onour planet Earth! First and foremost would be the most obvious changes, there would be many great advances in technology and mind boggling new inventions; I would expect to find a lot of gadgets like robots, auto driven cars and voice operated houses. In the future, with greater advancements in technology we might have the entire earth being run on nuclear power, hydrogen or other alternate sources of fuel. Stepping into such a world, all these changes would be thrilling to understand, explore and adopt. and booming. Nanotechnology works from the level of an atom and if we really master this we can truly achieve anything.In the world of “Star Trek”, machines called replicators can produce practically any physical object, from weapons to a steaming cup of Earl Grey tea. Long considered to be exclusively the product of science fiction, today I believe replicators are a very real possibility. This technique is called molecular manufacturing, and if this dream ever does become a reality, it could drastically change the world.Atoms and molecules stick together because they have complementary shapes that lock together, or charges that attract. Similar to the attraction in magnets, positively charged atoms will stick to negatively charged atoms. As millions of these atoms are pieced together by nanomachines, a specific product will begin to take shape. The goal of molecular manufacturing is to manipulate atoms individually and place them in a pattern to produce a desired structure. These replicators could work together to automatically construct products, and could eventually replace all traditional labour methods. This However, all these things are merely fantasies. Looking at the situation from a scientificperspective, I would hope to find that our great scientists have made the impossible possible. Nanotechnology is one of the many fields of science that seem to be fast emerging -6- 2060 2060 will continue to build until the limitations of the field become public knowledge, and then interest (and funding) will quickly dissipate. However all changes and innovations such as these do come at a cost. As excited as I would be to see all these phenomena, I would dread to finding out what’s happening to our environment. Rapid technological advancements such as these have always had detrimental effects on our environment. And only if we adopt the path of sustainable development can these be avoided. Thus, looking 50 years ahead, my greatest fear would be to see our forests depleted and our river beds dried up; environmental damage at its peak. At the rate that we are going it is difficult to tell whether we will be smart enough to combat global warming or not. Some scientists have hypothesised that at the current rate of environmental damage, the world might go into a second ice age in order to cool down, but before this a number of natural disasters may also occur. Thus, it is predicted that global warming will ultimately lead to our demise. could vastly decrease manufacturing costs, thereby making consumer goods plentiful, cheaper and stronger. Eventually, we could be able to replicate anything, including water and food. Thus, the consequences of poverty could be eradicated by machines that fabricate goods for the poor. Nanotechnology may have its biggest impact on the medical industry. Patients will drink fluids containing nanorobots programmed to attack and reconstruct the molecular structure of cancer cells and viruses. There’s even speculation that nanorobots could slow or reverse the aging process, and life expectancy could increase significantly. Nanorobots could also be programmed to perform delicate surgeries -- such nanosurgeons could work at a level a thousand times more precise than the sharpest scalpel. By working on such a small scale, a nanorobot could operate without leaving the scars that conventional surgery does. Additionally, nanorobots could change your physical appearance. They could be programmed to perform cosmetic surgery, rearranging your atoms to change your ears, nose, eye color or any other physical feature you wish to alter. Many nanotechnology experts feel that these applications are well outside the realm of possibility, at least for the foreseeable future. They caution that the more exotic applications are only theoretical. Some worry that nanotechnology will end up like virtual reality -- in other words, the hype surrounding nanotechnology Theses days, it seems, so much of our interest lies in fashion, technology and overall development, that we do not realise the consequences of what we are doing. Corruption and malpractices are rampant, not only in India but all over the world today and the only way we can do anything about it is by taking a stand against all of this. People have become so self absorbed that they fail to see the bigger picture; the picture which includes our earth slowly dying. All the ‘development’ that we are refusing to compromise for the sake of the environment will be worthless. What is the point of a self driven car if there is no one left to drive it!? If I woke up 50 years later, to find an earth that is barely inhabited, technology so unsustainable that it cannot be used, and the earth’s bounty -7- 2060 on its decline, I will blame no one but myself; me and all the other people of my generation who didn’t stop this from happening. For it is our generation which has the power to stop all of this. The future is finally left in our hands. Because WE are the future of this planet, and 50 years later WE will be the ones who will have to face the wrath of the environment. It is up to us, and only us to take care of the damage, before it is too late. dividual can accomplish, we require a group effort, a global effort. Our demise is something that we can still stop, but only if we take an initiative, and not wait for someone else to do it first. So I really do hope that when I wake up 50 years later, I awake to a world where man, machine and environment live together in harmony, as opposed to the earth in a deteriorating condition and the fall of humans, something that is left entirely in our hands Most of all, I would be ashamed that no one in the world took the initiative to stop these atrocities. And everyone is to blame, because saving our planet is not something that an in- Ishita Sethi 12-B The Jetsons The Jetsons’ city was one of the first representations of what was felt the future had in store fore us; buildings raised high above the ground, mostly from the Googie style of architecture, flying cars and a number of labour-saving devices The unstoppable force paradox "What happens when an irresistible force meets an immovable object?" -8- Haven’t you always felt that you want to be in a character’s place in the book you’re reading. The Worldmakerinator does just that! It makes the book and creates a world just like life in the book. Devesh Mittal These shoes allow you to fly due to the mind jet engines under your sole. The shoes are solar powered and are controlled by a small handheld remote. -9- Arvaan Kumar The Invisibilty Cloak The Invisibility Cloak Soon Harry Potter won’t be the only one with an invisibility cloak, that is if the scientists at University of St. Andrews in Scotland have their way. The team has created a new kind of material called ‘Metaflex’ that can bend light and render it’s wearer invisible. The workinator is a suit from head to toe which has 4 extra hands, 2 extra feet and a thinking cap. This comes with a workulator which is a calculator which controls the workinator when switched on. The workinator helps do things faster because of the extra parts. When a command is sent through the workulator the work will start. Metaflex is made up of artificial materials known as metamaterials, which have a negative refractive index and can enable invisibility over a range of frequencies of light. These materials also have the potential to be used in sensor detection, solar power management and high frequency communication. Contrary to popular belief, invisibility is not a very recent phenomenon, in fact scientists had already created invisible materials that work under high frequencies of light prior to the discovery of Metaflex. Providing invisibility under visible light posed a greater challenge. For this to happen, the building blocks of metamaterials, meta-atoms, would have to be very small. Another problem was the hardness of metamaterials, which made it difficult for them to be worn as clothing. The St Andrews' research team, led by Dr. Andrea Di Falco, fixed this problem by using only meta-atoms and stacking them on top of each other to provide a highly flexible metamaterial, or Metaflex. Even though invisibility cloaks being sold commercially in the coming future is a farfetched thought, world leaders and scientists across the world have already started picturing the consequences of such a feat. While they could have numerous applications in a variety of fields, many worry about their use in the hands of terrorists and well, even stalkers. Pihu Yadav 12-C -10- Pranati Kapoor Spray on Clothes The Liar Paradox A Cretan sails to Greece and says to some Greek men who are standing upon the shore: "All Cretans are liars." Did he speak the truth, or did he lie? Have you ever imagined spraying clothes onto your body so that they fit smugly and let your figure really show? Well, you’re in luck! The Imperial College London and Fabrican have now launched this as part of a new technology using solvents (polymers) that have spray paint which materialise into clothes. This layer of fabric then acts exactly as any other clothing - it can be removed (peeled off), washed and reworn. It is similar to the principle of velvet, where the fibres are bound together by a binding agent instead of being woven together. -11- Plastic Plastic Plastic: Which Angel will bring an end to this monster? Did you know that plastic bags kill an estimated 1 million birds, land animals and sea creatures every year? Or that each plastic bag can last up to 1,000 years in a landfill? Shocked? And yet, with knowledge of those facts, all of us, together, continue to consume over a trillion plastic bags each year. The word plastic is derived from the Greek word meaning capable of being shaped or molded. It refers to their “malleability that allows them to be cast, pressed, or extruded into a variety of shapes like films, fibers, plates, tubes, bottles and boxes.” Plastics are being used in various products, ranging from ships and aircrafts to common pins. This is primarily because of the properties of plastic which make it versatile, easy to manufacture at low costs and impervious to water. In fact, plastic has, in terms of popularity, overtaken all traditional materials like natural hide, stone, ivory, pottery, wood, paper, glass and metal. However, plastic is not the ideal material one should use. Environmentalists worry about both the creation and destruction of plastic. This is because the disposal of petroleum based plastic causes pollution, the release of greenhouse gases, and the creation of landfill material which is both biodegradable and nonbiodegradable. Plastics can be recycled, but the process is both manpower intensive and extremely tedious. Furthermore, the cost of plastics has been increasing in the last few years. This is due to the fact that the main material used to manufacture plastics on a commercial level, petroleum, is becoming more expensive as the days progress. Hence, research is being conducted on cost effective and superior alternatives to petroleum-based plastics. Plant based plastic alternatives include jute, hemp, wood, organic cotton, recycled paper and biodegradable plastic. Products made of jute are both biodegradable and environment friendly. Their production results in generating employment in the rural parts of the countries. This fiber can be used to make cloth and paper. As a plant, it needs little pesticide and fertilizers. It is also often used in rotational cropping. Hemp is a fibre that has thousands of known uses and can replace anything including plastics. It is versatile enough to make both paper and fuel. Hemp plant uses minimal amounts of water and no pesticide. In fact, it helps in the removal of weeds. Hemp is free of injurious chemicals, is strong, is resistant to weathering and looks amazing. Some even consider it to be stronger than steel. A product made out of hemp is biodegradable and was hence successfully used by Henry Ford to manufacture a four wheeler in 1941. Wood is, of course, a traditional alternative. Bamboo, small twigs and bigger branches are used to make a variety of wooden products. -12- Organic cotton has also gained popularity. Traditional production systems, now referred to as organic systems, help to maintain the fertility of the soil through natural fertilisers (rather than chemical ones); prevent excessive usage of pesticides which would tend to ruin the eco system and balances therein; and depend on natural rain, minimally supplemented with irrigation. The cotton fibers that are produced through this method are biodegradable and are used for many purposes – cloth being the major one. Recycled paper follows one of the principles of the 3Rs (Reduce, Reuse and Recycle). This paper comes from wood that has already been cut and will be wasted if it is not used. Quite naturally, reusing it saves trees. It is cheap and can be done even at an individual level. However, it is not impervious to water, hence has restricted usage. Also, newspapers must be used carefully, as the ink on newspapers is poisonous for human consumption. Starch from natural sources like wheat, tapioca, corn and potatoes is being used to manufacture biodegradable resins. These plant based plastics or biodegradable plastics (different scientists use different words) can be produced using several processes including ‘starch conversion’, ‘microbial conversion’ and ‘genetic modification of plants’. Starch from the natural source is extracted and converted into sugar and then into lactic acid through the process of bacterial fermentation. The lactic acid is then refined into ‘pellets’ that can be made into multiple final products. Initially, our society was based on materials made from plants, such as corn, soy and sugar beets. Plants, not oil, were the primary raw material used to produce chemicals, paints, construction materials, clothing, and other household materials. Actually, the birth of plastic was through a “plant based plastic!” This product was obtained from cotton and was meant only as a substitute for ivory. However, the ‘chemical revolution’ as some journalists call the period after the industrial revolution, favoured industrially produced plastic made from petroleum and natural gas. Ironically now, a century later, we are reverting to our research on bio-plastics. Research is being done on biodegradable plastics that disintegrate when exposed to sunlight, dampness, bacteria, enzymes, wind erosion and pest or insect attack. But, these modes of degradation will only work if the plastic is exposed at the surface. Similarly alternatives are effective when other situational variables like availability of oxygen exist in either the landfill or the composting site. Bio-plastics are a modern alternative to chemical plastics. Bioplastic products are used to make items of daily use like packaging material, disposable forks, knives, spoons, plates, glasses and bottles, automotive components, mattresses, CDs and many other consumer products. Many of the chemicals used in polyvinyl chloride (PVC) have been linked to cancer, birth defects, and other health problems. On the other hand, bio-plastics are -13- generated using natural materials that cause no harm. Their degradation has less harmful effects on the environment than plastics. Further, the bio-plastics industry has lead to economic development of the rural areas, by being a source of revenue for the poor farmers. Production of these also uses less fuel (including the fuel needed to sow and harvest the plant) as compared to their competitors, petrochemical plastics. Bio-plastics are compostable. While they may not deteriorate in smaller, local landfills or in home based composting sites, they can be composted in a bigger facility, where they will degrade in a month and a half, in comparison to traditional plastics that can take over a century to just start the long drawn process of degradation. Also, with rising oil prices, plastic production is becoming uneconomical, giving bio-plastics a lot of scope. However, it must be kept in mind that conventional corn production uses significant amounts of toxic pesticides that can adversely impact ground and surface water, leads to soil erosion, impacts soil production and wildlife habitats. In addition, the current trends towards genetically modified agriculture, the uses of hormones and steroids, over-usage of pesticides, fertilisers and irrigation, and the strain on infrastructure supporting recycling needs to be addressed. Science just wants to help us grow and develop, to make our lives more comfortable and help us live in a better environment. All we need to do to allow science to achieve this goal that ultimately benefits us, is to follow the path science points us towards. And in this case, we should try to minimise our plastic consumption and make a steady shift towards plant based plastic alternatives. Plastic How about using mushrooms to make plastics? There are 3 immediate and vast advantages – 1) No petroleum products needed 2) Only about one-tenth of the energy is used to make the plastic 3) Completely degradable. Advika Gupta 12-A -14- Energy Crisis Energy Crisis The lifeline of our modern civilization is energy. Energy is in everything. It comes in different forms — heat (thermal), light (radiant), mechanical, electrical, chemical, and nuclear energy. The use of energy has been pivotal in the development of human society by helping us control and adapt to the environment. Managing the use of energy is inevitable in any functional society. In the industrialized world the development of energy resources has become essential for agriculture, transportation, waste collection, information technology, communications that have become prerequisites of a developed society. The increasing use of energy since the Industrial Revolution has also brought with it a number of serious problems, some of which, like global warming, present potentially grave risks to the world. In society and in the context of humanity, the word “energy” is used as a synonym for “energy resources”, and most often refers to substances like fuels, petroleum products and electricity, in general. These are sources of usable energy, in that they can be easily transformed to other kinds of energy sources that can serve a particular useful purpose. All forms of energy are stored in different ways in the energy sources that we use every day. These sources are divided into two groups — renewable (an energy source that can be replenished in a short period of time) and nonrenewable (an energy source that we are using up and cannot recreate in a short period of time). Renewable and nonrenewable energy sources can be used to produce secondary energy sources including electricity and hydrogen. Renewable energy sources include solar energy, which comes from the sun and can be turned into electricity and heat. Wind, geothermal energy from inside the earth, biomass from plants, and hydropower and ocean energy from water are also renewable energy sources. However, we get most of our energy from nonrenewable energy sources, which include the fossil fuels like oil and coal. Fears of global warming aside, burning fossil fuels releases chemicals and particulates that can cause cancer, brain and nerve damage, birth defects, lung injury, and breathing problems. The toxic stew released by combusting hydrocarbons pollutes the air and water, and causes acid rain and smog. Nuclear energy, once touted as “too cheap to matter,” has never been economically successful when all costs are factored in, and fear of disasters like the Chernobyl reactor melt-down have virtually shut the industry down in the U.S. and Europe. Inexpensive and seemingly abundant nonrenewable energy fueled the twentieth century economy, but geologists, climatologists, environmentalists, and many others are warning that the honeymoon may soon be over. Aananya Banaik 9-B -15- Energy Tomorrow Energy Crisis Energy Tomorrow The world energy demand is increasing But our energy sources are decreasing We’ll have no energy left for tomorrow It’s going to become the reason for our sorrow. Energy is the basic necessity for life, We use it in our daily lives, It’s the asset on which we survive. The essential part of life (energy) Which keep us alive Is depleting because of humankind. A greater energy-efficiency commitment Is a promise to be made With the world and ourselves, else Nothing will be left if we work at this rate We have to take action and start to conserve Because our next generations do deserve To have equal rights as us So don’t be selfish, but preserve. The future is in your hands The decision is yours Take a stand Reserve or ignore! Subhee Rawal 9-B The cheapest energy is the energy you don't use in the first place. -- Sheryl Crow -16- -17Arshya Chopra Nuclear Energy Nuclear Energy Visits from the future Let us say that a time travel machine is invented in the near future, and further, that it is I who invents this machine. I determine right now that as soon as I invent the machine, I shall visit myself at this time. But I have not been visited by myself. So, time travel must not be possible. Introduction Nuclear energy is created by a controlled nuclear chain reaction that boils water, produces steam, and powers steam turbines. 30 years ago, nuclear energy was an advanced technology; the subject of experimentation and far fetched ideas. Nowadays, nuclear energy is one of the largest sources of electric power after coal. In the world, there are more than 440 nuclear energy plants. These plants supply more electricity than any oil, natural gas or hydropower plant. These plants have also been able to save consumers around $170 billion over other fuels used to make electricity, since 1973. Along with the economic benefits achieved through the use of nuclear energy, there are environmental benefits as well. There are, however, various drawbacks caused by the production of electricity through nuclear power. Although there are quite a few risks involved when using nuclear energy as a source of power, we argue that the benefits greatly outweigh any possible problems that may arise. TYPES OF NUCLEAR REACTORS There are many different kinds of nuclear reactors of which the two most important are Boiling Water Reactor and Pressurized Water Reactor. BOILING WATER REACTOR In a boiling water reactor (BWR), the water, which passes over the reactor core to act as a moderator and coolant, is also the steam source for the turbine. This has a disadvantage as any fuel leak might make the water radioactive and the radioactivity would reach the turbine and the rest of the loop. This reactor operates at 70 atmosphere pressure and 285 degrees Celsius. PRESSURIZED WATER REACTOR In a pressurized water reactor (PWR), the water, which passes over the reactor core to act as a ‘moderator’ and coolant, does not flow to the turbine, but is contained in a pressurized primary loop. The water in this loop is converted into steam in the secondary loop. This steam produced drives the turbine. -18- This kind of nuclear reactor has two main advantages. The obvious advantage is that a fuel leak in the reactor core would not pass any radioactive containment to the turbine and condenser. The other -19- Nuclear Energy advantage is that the PWR can operate at a higher temperature and pressure than the BWR (160 atmospheres and 315 degrees Celsius). This higher temperature in turn increases the pressure acting on the steam turbine. This higher amount of pressure helps spin the generator faster and produce more energy. HOW DOES IT WORK? All nuclear reactors currently in operation use nuclear fission to produce energy. “Nuclear fission is a nuclear reaction in which a heavy nucleus (such as uranium) splits into two lighter nuclei (and possibly some other radioactive particles as well.)”. “Nuclear energy can also be released by fusion of two light elements (elements with low atomic numbers). The power that fuels the sun and the stars is nuclear fusion.” A large amount of heat energy is produced when atoms are spit and this heat boils the water. The energy produced is transferred to steam turbines in the form of heat and is then used to generate electricity. Except for the fact that a nuclear plant uses a different source of energy, a nuclear energy plant is no different from any fossil fuel power plant. Both of these plants use the energy source to generate heat to drive turbines that generate electricity. This electricity generated is then fed into a grid for domestic and industrial use. ENVIRONMENTAL IMPACT Some say that nuclear energy is a ‘clean’ source of producing electricity since the nuclear power plants do not release any of the ‘traditional’ power generation air pollutant such as sulphur dioxide, carbon dioxide and nitrogen oxides. Nevertheless, the requirements for the operation of the power plants result in environmental impacts, including air emissions, at all stages of the uranium procurement process. Though plant operations do not emit gases similar to those emitted by fossil plants, nucle- ar plants can release small amounts of airborne radioactive gases. Uranium mining techniques are similar to those used for coal. Issues of toxic contamination of local land and water resources arise in the process – similar to those issues with coal mines. Problems related to unique radioactive contamination hazards to mine workers and nearby populations are also capable of arising. Abandoned mines contaminated with high-level radioactive waste can continue to cause radioactive risks for as long as 250,000 years after shutting down. -20- Nuclear Energy In nuclear fuel processing, the uranium enrichment process depends on large amounts of electricity, the majority of which is provided by dirty fossil fuel plants giving out all of the traditional air pollution emissions not released by the nuclear reactor itself. In addition, the fuel processing produces radioactive wastes, which must be adequately stored and sequestered to minimize the risk of the release of radioactive material. Nuclear plants that rely upon water for oncethrough cooling systems require two-and-a-half times as much water as fossil fuel plants. The impact on water resources, aquatic habitats, and fish are therefore considerably larger with nuclear power plants than any other power generation technology (with the possible exception of hydroelectric facilities themselves). Some of the most severe impacts linked to the generation of electricity on land can also be attributed to nuclear plants. While the amount of solid wastes generated at nuclear plants is relatively small, these radioactive wastes pose health risks that exceed that of any other source of electricity. There are chances that these radioactive wastes will be stored for a century or more at existing nuclear plant sites, a prospect that may prevent any of these areas from being used again in the future as they will become contaminated. A major malfunction in a nuclear power plant's cooling systems can create a nuclear meltdown, where fuel rods melt within a few seconds. The heat from the unrestrained reaction can melt everything it comes into contact with. Catastrophic accidents could harm or kill thousands of people. The surroundings of a nuclear power plant in India are monitored by the Environmental Survey Laboratory (ESL) set up well before starting the operation of the plant. The ESL collects data on forest, flora and fauna, marine products, food and air etc., to set up base level data on their quality prior to commencement of the operation of the plant. Samples are drawn and regularly analyzed to ascertain the status on a continuous basis. The ESL functions independent of plant authorities, and the data collected is checked by the regulatory authorities for control purposes. ADVANTAGES OF NUCLEAR ENERGY Reduction of dependence on oil: In 1973, oil provided 24% of the world’s electric supply and at that time nuclear energy provided only 1%. In 1990, however, oil represented only 9% of the world’s electric supply while, nuclear energy accounted for 12%. This proves that the people realized that nuclear energy is a better source of energy, which has resulted in people depending less on oil. Efficiency: Nuclear power plants are also very efficient as compared to other sources of producing energy. For example, the nuclear power plants are working at 98% efficiency which helps produce a lot more electricity. -21- Nuclear Energy Protecting our Environment: Since nuclear energy produces electricity through the fission of Uranium, nuclear power plants do not pollute the air with nitrogen oxides, sulphur oxides, dust or greenhouse gases such as carbon dioxide obtained from the burning of fuel. Nuclear energy also offers an alleviation of the global carbon dioxide problem that everyone is facing. If the 16% of the world’s energy, which is currently produced by nuclear pow- er, were to be produced by coal, 1600 million more tons of carbon dioxide would have been emitted annually. France is an example where the environmental benefits of nuclear energy can be seen. In the 1980’s, due to the concerns over imported oil, France more than tripled its nuclear energy production. During that period the pollution from the French electric power system dropped by 80% - 90%. DISADVANTAGES OF NUCLEAR ENERGY Waste: This is the biggest disadvantage of nuclear energy. Although the amount of waste produced is small, it releases harmful radiation when it decays. Unfortunately, so far no method has been found to get rid of the waste or speed up the decaying process. Accidents - Core Meltdown: If the reactor core cooling fails, e.g. due to a major leakage in the reactor cooling circuit, and the emergency core cooling system fails simultaneously, the residual heat in the fuel created by the radioactive decay of the fission products heats up the reactor core possibly until the fuel melts. During the meltdown, the core support structures also fail so that the whole molten mass drops into the lower hemispherical area of the reactor pressure vessel. It can be assumed that the heat released by the molten mass melts through the bottom of the reactor pressure vessel. The density of the containment is important for the extent of radioactive substances released to the environment in the case of such a core meltdown accident. This happens when the nuclear core over heats and harmful radiations are emitted. Not only does this contaminate the environment, but it is also harmful to people’s health and often causes cancer. This can be solved by using Pressurized Water Reactors to produce nuclear energy as there are fewer chances of them leaking and causing a lot of damage, therefore preventing accidents from occurring. But a consoling fact is that nuclear power has a very good safety record for a period spanning more than three decades. The Three Mile Island (TMI) accident in March 1979 and the Chernobyl accident in April 1986 have raised apprehensions in the minds of the public all over the world. In the case of TMI, no radiation injury had occurred to any member of the Public. In fact all the safety systems had worked as designed and no radioactivity was released to the atmosphere. At Chernobyl, 31 people died and they are all plant personnel. However, it must be recognized that the Chernobyl accident occurred due to the negligence of operators who violated the safety procedures. Besides, the -22- Nuclear Energy Chernobyl reactor is a totally different type. It employed Graphite as a moderator. Graphite is a form of carbon and its combustible property contributed to explosion in the reactor core. Such a sequence of events in the nuclear plants is not possible and explosion in the core is ruled out as it is cooled and moderated by heavy water. Adequate safety features in the plant are provided to ensure its safe operation. Paramount importance is given in setting up of nuclear power installations, to the safety of operating staff, public and environment. Safety experts and regulatory personnel are associated at all levels which ensures smooth operation of nuclear power plants. Thus Chernobyl type accidents are ruled out in Indian Nuclear Power Plants. Weapons: Nuclear energy has the potential to be converted into weapons. Every nuclear reactor can make enough plutonium to build over 30 nuclear bombs annually. Uranium: Nuclear energy needs a large amount of uranium to power the plants. And since there isn’t enough uranium in the world, nuclear energy can’t completely replace other fossil fuels. Other types of reactors are able to produce energy by using other materials. But these other reactors are slow, expensive and the technology will not be ready for at least another ten years. Cost: Nuclear power plants are built using 3-5 billion dollars. Maintenance and operating costs are also very high. CONCLUSION Nuclear energy has proven to be the most beneficial source of electricity. As a result of this, several countries have decreased their dependency on oil. Nuclear energy is also a protector of the environment, as its production does not emit harmful greenhouse gases. Although there are some major drawbacks using nuclear energy, its uses outweigh those of any other source of energy. Viraj Nanda 11-B “A nuclear power plant is infinitely safer than eating, because over 300 people choke to death on food every year” -23- An Alternate Route An Alternate Route An Alternate Route We humans have utilized the resources that we have obtained as a gift from Mother Earth since the day we stepped on it. Not only have we used these resources to benefit us but we have thoroughly started exploiting them to meet our ever growing demands without worrying about the consequences. And now it is payback time. With rapidly declining crude oil reserves, pollution levels shooting up, climate change and sky rocketing petrol prices, it is time we get our act together. The common man has not worried about the dwindling natural resources and is waiting to be shocked and surprised at the same time! What will happen when one morning I wake up to find that there is no petrol to drive me to my workplace? This reminds me of the television advertisement where a little boy advises the father to shut the engine while waiting at the traffic signal so that there is some conservation of the liquid gold which the next generation can dream to use. There is no denial that we are the most evolved species on this planet and hence we have always tried to find solutions to the existing problem. With CNG taking a lead role for day to day commuters in Delhi, not only to increase fuel efficiency and reduce the carbon footprint on the earth. Manufacturing Hybrid vehicles is the prime target of many automobile giants. The term Hybrid applies to a combination of two power sources- namely the engine and an electric motor. A few years ago we got the opportunity to witness a solar car in school as well. I remember how everyone was excited to see those huge solar has it taken care of the pollution problem but is easy on the pockets as well. The buses and auto rickshaws are CNG driven and many well known car makers have also manufactured cars which have this alternate option. The mandatory Pollution Under Control (PUC) checks have further helped to make Delhi a green city. However, a bigger problem looms large on us, with the economy boosting up, the number of cars plying on the roads have shot up leading to endless traffic jams. Very recently, the Chinese Government has decided to reduce the vehicular pollution and congestion in Shanghai by curbing the number of new vehicles that are to be registered. In other parts of the world Congestion Tax and Parking fees are extremely high. India needs to wake up and think that making more flyovers and roads is not the solution to traffic woes. It needs to make stricter norms and restrict the number of vehicles used per family. We have definitely tried our hands at alternative fuel resources as well, Biodiesel claims to be a non-polluting energy resource. Researchers, scientists and automobile engineers are constantly finding newer innovative methods -24- panels kept on the roof of the trailer. Though it is still in the experimental stage, I am sure there are people who are thinking of utilizing the unlimited steady supply of solar power in the automobile sector. Looking at all these achievements, there is solace and hope for the future. We may be in the path of creating a right balance between production and consumption. The key word is green and hopefully we are inching towards green energy. We cannot give back what we have already taken from the earth but at least try and save the rest for our future generations. Shoubhik Ghoshal 12-A Gadget Making Electricity Generating Brakes Leonardo Singh 8-B -25- At high speeds whenever a sports car brakes, the brakes create heat and friction along the brakes there are wires which when braking get heated up and as metals are good conductors of heat , take the heat to the DC generator which converts heat into electricity and changes the car battery Artificial Intelligence BMW has created a concept car which does not have steel sheets for a body – instead, it has a frame of wire and cloth. And, some parts of the cloth covering actually move to allow contextual actions, like exposing the headlights at night. Yves Behar and Forrest North unveil Mission One, a sleek, powerful electric motorcycle. A motorcycle which runs only on electricity and gives a top speed of 150 miles an hour Artificial Intelligence Gaak, a robot exhibited in June 2002 in the Magna science centre in Rotherham gave all the scientists an alarming demonstration. It made a dash for freedom from an exhibit! Gaak crept along a barrier until it found a gap and squeezed through. Having left the building, it reached Magna’s exit by the M1 motorway before it was rumbled. It showed how a machine can become independent! A machine behaving like a human. This underlies artificial intelligence (AI). It involves the study of intelligent behaviour in machines. Scientists, for a long time now, have been undertaking research focused on creating machines that could solve problems and reason like humans. One of the most difficult problems in artificial intelligence is that of consciousness, feelings, emotions and social skills like a human being. Creating a self-aware robot with real feelings is a significant challenge faced by scientists hoping to mimic human intelligence in a machine. Since the early 1990s, researchers have concentrated on developing smaller, independent robots instead of trying to recreate human intelligence. The model for many of these machines is insect intelligence, which is - in its own way - very sophisticated. Approaches to AI Thus, researchers and scientists working on AI branched into broadly two approaches but they had the same goal of creating intelligent machines. The two schools of thought are the bottom up approach and the top down approach. Neural Networks -26- This is the bottom up approach. It basically aims at copying the structure and function of the human brain, to create intelligent behavior. Expert Systems This is the top down approach. Instead of starting at the base level of neurons, by taking benefits of the related computational power of the modern computers, followers of the expert systems approach are making smart machines that solve problems by deductive logic. From chess games like Fritz which can beat Grandmaster Gary Kasprov to the daily weather forecast systems; many things in our daily life are based on Artificial Intelligence. Artificial Intelligence has applications in every field of human endeavor. They combine precision and computational power with logic, to solve problems and reduce errors in operations. Robots are taking over many jobs in industries that are dangerous for or are beyond human ability. Humour Test! Knock knock……..Who's there? A.I. …… A.I. who? A.I. heard you were looking for a good joke! If your computer laughs at this, I would classify it as non-intelligent. APPLICATIONS OF AI Heavy Industries and Space Robots or machines have started manufacturing cars in big car industries. It is really tough to put all the different pieces of cars in less than 10 minutes for man but machines are manufacturing cars in such industries where they want a new car every 10 minutes. In Japan, robots have started controlling -27- Artificial Intelligence Artificial Intelligence is often present as the opponents you play against. AI is present all around us and sometimes we don’t notice it. It is present in computer games, in our cars and our e-mail. Machines have always excelled at tasks like calculation. But now they challenge humans in games like chess and football. unmanned air crafts to space for us to learn about new planets in our solar system. Finance Banks use intelligent machines to see the stock market rise and decrees every day which is one of the toughest jobs for humans. Computer Science These intelligent machines have created spinoffs like dynamic programming, object orient programming, symbolic programming, intelligent storage management systems and many more. Their main aim of creating AI is that people should learn to lead. Aviation Planes have monitoring systems to monitor the atmospheric conditions and calculate the amount of time to reach the destination. Weather Forecast Neural networks are used for predicting weather conditions. Earlier data is fed to a neural network which learns the pattern and uses that knowledge to predict weather phenomena. Smart games A place where artificial intelligence has found a natural home is in computer games. In games, AI Chatbots Chatterbots, or Chatterboxes. A chatbot is a computer program that is designed to simulate an intelligent conversation with humans. Many chat bots use artificial intelligence to interpret speech or text input and before providing a response. Social skills Some LATEST AI Happenings FILMS Inspired by AI In The Terminator (1984), a computer network nukes the human race in order to achieve supremacy. This network manufactures intelligent robots called 'Terminators' which it programs to annihilate human survivors. In The Matrix (1999) and The Matrix Reloaded (2003), a machine enslaves humanity, using people as batteries to power its mainframe. Steven Spielberg’s AI: Artificial Intelligence (2002) paints a more sympathetic view of artificial life, depicting sensitive robots that are abused by brutal, selfish human masters. Sporting chance The Robocup Football Challenge has robots play one on one football matches against each other. The tournament has different leagues for different robots, including one for Sony’s Aibos and one for humanoid robots. It has a proper fixture and venue for the tournament. The robots try and navigate themselves to their opponent’s goal. A special ball with sensors is used. -28- The goal of AI research was trying to make machines understand humans. At the Massachusetts Institute of Technology (MIT), scientists have designed a robot called Kismet that can have realistic conversations with people. Kismet is capable of seven different facial expressions and can vary the tone of its voice. It also adjusts its gaze and the orientation of its head towards the person it is speaking to. ROBO DJ Scientists at HP have designed an electronic DJ. The DJ selects beats and tunes and then mixes them up. Building bridges A computer program developed at Brandeis University in Massachusetts has learnt how to design and build bridges, cranes and tables all by itself. It reinvented support structures such as the cantilever and the triangle without prior knowledge of them. Fraud busting Credit card companies use a computer program called The Falcon to detect card fraud. The Falcon works by constantly updating a profile of how customers use their credit cards. It then looks for uncharacteristic patterns of credit card use in the data. Roving eyes A robotic head built by a Scottish robotics company can determine a woman’s attractiveness. It works by examining faces to determine how 'feminine' or 'masculine' they are. Consumer gadgets Robots designed for the consumer market and employing very basic forms of AI have become increasingly popular in recent years. -29- Artificial Intelligence Almost Human At the University of Texas, Dallas, researchers have designed a human face capable of 28 facial movements, including smiling, sneering, furrowing its brow and arching its eyebrows. It could be used to put a human face to the artificial brains of the future. Sony's Aibo robot dog behaves like a puppy when it is first activated. But it "learns" new behaviour as it spends more time with its human owner. Omron's NeCoRo robotic cat and Sanyo's robotic guard dog are other examples of this wave of consumer robots. This is likely to continue in future as consumer robots become more and more sophisticated. Air ware A software program called FACES could stop mid-air collisions between planes. It makes planes perform avoidance manoeuvres in synch. When tested in a flight simulator, the software prevented a pile-up between 35 planes sharing airspace. The next best thing is comedic computers. Imagine that the ATM next door had a better sense of humour. Artificial intelligence researchers are creating computer programs that can recognize a good joke. And this is not all. Research and development in the area of AI is ongoing and is getting more and more advanced. The future holds immense possibilities. Neel Mehdiratta 8-C ‘Data’ is a stand up comedian that is a robot – and it can adjust its jokes based on the type of audience as well as this audience’s response to its earlier jokes. -30- A long time ago, far away on the planet of Cybertron, a war was being waged between the noble Autobots (led by the wise Optimus Prime) and the devious Decepticons (commanded by the dreaded Megatron) for control over the Allspark, a mystical talisman that would grant unlimited power to whoever possessed it. The Autobots managed to smuggle the Allspark off the planet, but Megatron blasted off in search of it. He eventually tracked it to the planet of Earth (circa 1850), but his reckless desire for power sent him right into the Arctic Ocean, and the sheer cold forced him into a paralyzed state, but his body has begun to defrost... -31- -32- -33Vedika Modi The Large Hadron Collider The Large Hadron Collider The Large Hadron Collider is the world’s largest and highest energy particle accelerator. A particle accelerator is a device that propels particles using large and very powerful electromagnets. The magnetic fields accelerate the particles and help them change direction. The particles accelerated are sub-atomic particles like electrons, protons and neutrons. Accelerating particles is not the only job of the L.H.C. (Large Hadron Collider). When particles have reached sufficient speeds close to the speed of light, they are literally collided or smashed to create even smaller particles called elementary particles which cannot be broken down into simpler particles. These particles form groups called Hadrons which gives the collider its name. The elementary particles created are very high energy but short lived particles which can flash into existence for a few micro-seconds. First it was thought that subatomic particles were the smallest parts of matter but then scientists Murray Gell Mann and George Zweig proposed the theory of even smaller particles in 1964 called quarks. Soon scientists were searching for them and found many elementary particles with the help of many other colliders. This research can also help us to find out how the Big Bang took place and would help science greatly. The process of colliding particles sounds very simple but is very complex and dangerous. Even one mistake would cost dearly. Elementary particles are created by smashing sub- The Large Hadron Collider atomic particles like protons with their antiparticles which have the same properties but opposite charge. Particles are first fed into the collider tunnel which has a special insulation which doesn’t let particles escape. The particles are first accelerated separately with the magnets and then on accelerating into beams they are put in the same tunnel and collided. The particles break up and elementary particles are released for a few micro-seconds. Electronic sensors show their tracks on screens to scientists which let them calculate mass, electric charge, density, etc. The L.H.C. helps us understand a lot about physics. Protons were first fired on 10th September, 2008 but in the process, the magnets got damaged cancelling the colliding process. On 23rd November, 2009 particles were first collided. People had thought that the L.H.C would destroy the world by colliding particles but this was just science fiction. Scientists at L.H.C. are currently searching for a new type of particle known as the Higgs Boson which is thought to give things mass. It should be found in 2 to 3 years. DID YOU KNOW? 1. The combined strands of the superconducting cable being produced for the LHC would go around the equator 6.8 times. If you added all the filaments of the strands together they would stretch to the sun and back 5 times with enough left over for a few trips to the moon! 2. When the 27km long circular tunnel at CERN was excavated, between Lake Geneva and the Jura Mountain Range, the two ends met up with just one centimetre of error! -34- -35- Ayush Sharma 9-B Cold Fusion Cold Fusion Cold Fusion A topic which has been getting a lot of attention recently is the problem of finding a sustainable energy source. For this governments are looking far and wide and finding many natural sources of energy which can be used indefinitely. However, a yet largely unheard of source of energy which not only has the potential to limitlessly power the earth but which could also be used without completely changing the current structure of power generation is cold fusion. Cold fusion is a process similar to that which takes place on the sun. It involves the fusing of two small atoms, usually Deuterium, to create a larger atom where the mass of the larger atom is less than the combined masses of the two initial atoms. Unlike the fusion on the sun which takes place at close to 50,000K cold fusion, if conducted successfully, will take place at just over room temperature. By using such little energy to fuel the reaction we can produce much more energy (approximately 10 times) than the same reaction produces on the sun. What happens to that missing mass? Using Einstein’s famous equation, E = mc², the lost mass gets converted into energy by multiplying it by the (speed of light)². That means that a single Kilogram of Heavy Water (water with Deuterium instead of Hydrogen) can power a city the size of New York for 24 hours. So with just 1000 kg of Heavy Water we could power the earth for a day. But where do we get this heavy water form? It’s all around us – in the ocean. 1% of all the water in the ocean is heavy water – enough to power the Earth until the year 30,000 CE. As with any new method of energy generation people ask – “What byproducts does it produce”. The best part? The ONLY by-product of cold fusion is pure water. Not only does Cold Fusion solve the energy crisis but can also provide clean drinking water for the same period of time. However, cold fusion does have a single drawback. Obtaining Heavy Water from the oceans is, as of now, a costly process costing almost Rs. 50,000 for a single Kilogram. This has significantly slowed down its’ acceptance into the scientific com- munity as many feel that the money is better used to achieve other objectives. The original acceptance of cold fusion as a method of generating energy was in 1989 when Martin Fleishmann and Stanley Pons published a paper on what they believed was a successful cold fusion Experiment. During their reaction they managed to split Deuterium molecules before getting them to fuse instead of fusing them, which, until then, had been the norm. Though their experiment could not be replicated and was ultimately frowned upon it created the foundation of the modern cold fusion experiments. Today scientists are working on two types of cold fusion. -36- The first type is muon-catalyzed fusion, where the scientists replace the electrons in the atoms with muons, which have the same negative charge as an electron but weigh 217 times more. This means that the intensity of the negative charge decreases significantly making it easier to bring the atoms close enough to fuse. The second type of cold fusion scientists are working on is a continuation of the Fleishmann-Pons experiment. This is an electrolytic process with a Deuterium anode, Palladium cathode and Heavy Water electrolyte. When electricity is passed through it the heavy water produces deuterium atoms that converge at the cathode. The palladium cathode increases the compressibility of the atoms causing them to fuse. Though neither of these methods appears to be successful, the Fleishmann-Pons type fusion is showing mixed results with erratic energy outputs of 2500% the energy input. However, these outputs are not significant enough to attract attention. In the past decade many nations have come to recognize that cold fusion is a future option and have begun to invest in it. The United Nations has set up a laboratory in Switzerland in association with CERN with the goal being to successfully achieve cold fusion. Even the Indian government has recognized its benefits and have begun funding efforts to invent a successful cold fusion generator and these investments have brought fruits as a Japanese scientist, Yoshiaki Arata, working in Bangalore has reported successful cold fusion experiments yielding 1500% energy output. His experiment is now working by powering his laboratory but still has too many flaws to be used commercially. Though still thought to be in its youth by the scientific community the possibilities opened by cold fusion are thought to be endless as the limitless energy can be used to power experiments considered too power hungry like those in the Large Hadron Collider. I strongly believe that cold fusion, if successful, would create a new future for mankind, because we could live powerfully and unafraid, because there will never be a too much. Dr. Ock, Spiderman’s nemesis, was the first fictional scientist to use cold fusion to power his evil schemes -37- Amar Singh Dhingra 12-C Antimatter Antimatter Antimatter Antimatter sounds like the stuff of science fiction and it is. But it is also very real. Antimatter is created and annihilated in stars every day. Here on Earth it is harnessed for medical brain scans. "Antimatter is around us each day, although there isn't very much of it," says Gerald Share of the Naval Research Laboratory. "It is not something that can be found by itself in a jar on a table." So Share went looking for evidence of some in the Sun, a veritable antimatter factory, leading to new results that provide limited fresh insight into these still-mysterious particles. Simply put, antimatter is a fundamental particle of regular matter with its electrical charge reversed. The common proton has an antimatter counterpart called the antiproton. It has the same mass but an opposite charge. The electron's counterpart is called a positron. Antimatter particles are created in ultra highspeed collisions. “One example is when a high-energy proton in a solar flare collides with carbon”, Share explained in an e-mail interview. "It can form a type of nitrogen that has too many protons relative to its number of neutrons." This makes its nucleus unstable, and a positron is emitted to stabilize the situation. But positrons don't last long. When they hit an electron, they annihilate and produce energy. "So the cycle is complete, and for this reason there is so little antimatter around at a given time," Share said. Antimatter has tremendous energy potential, if it could ever be harnessed. A solar flare in July 2002 created about half a kilogram of antimatter, according to new NASA-led research. That's enough to power the United States for two days. Laboratory particle accelerators can produce highenergy antimatter particles, too, but only in tiny quantities. Something on the order of a billionth of a gram or less is produced every year. Though scientists like to see antimat- ter as a natural thing, much about it remains highly mysterious. Even some of the fictional portrayals of mirror-image objects have not been proven totally out of this world. "We cannot rule out the possibility that some antimatter star or galaxy exists somewhere," Share says. "Generally it would look the same as a matter star or galaxy to most of our instruments." Theory argues that antimatter would behave identical to regular matter gravitationally. Shreya Chadha 11-C The music beat is a device to be used while lsitening to music. You tie the band around your wrist. It calculates your pulse and makes you hear music according to that. For example if your pulse is fast, it makes you hear music that is slow and calms you down. It is a very useful gadget to use if someone is angry, hyper or depressed. Saieeshaa Sethi -38- -39- PCR - A Magical Genie PCR - A Magical Genie The human body is made of cells, which enclose a nucleus, which in turn contains the chromosomes constituting the DNA. Too long, eh? But do you know how small this very chromosomal or genomic DNA is? No? Well, frankly, even I don’t. But the fact remains to surprise me that this very segment of genomic DNA can be multiplied into billions of copies in a matter of a few hours. It’s technology, it’s intriguing, it’s polymerase chain reaction. The DNA segment of interest or target DNA, an enzyme called Taq Polymerase, free nucleotides and primers are the ingredients to the perfect recipe of copies of DNA. The primers are mere “copy cats”, so they contain the same end sequence as the target DNA. As in the movie, Inception, there were 3 different levels of the dream, similarly in PCR there are 20-35 cycles to create the end products while the principle on which they are created is thermal cycling, i.e. repeated heating and cooling of the target segment for DNA melting and enzymatic replication of DNA. Firstly, as you would be aware, the DNA contains 2 strands. Hence, by heating the target DNA, the hydrogen bonds are broken apart and the DNA is denatured into 2 single strands. Then, the primers start forming hydrogen bonds or anneal with the specific segments of DNA according to the base pairs of Adenine, Guanine, Thymine and Cy- tosine. It’s the rule of every strand of DNA to make Adenine and Thymine join hands while Cytosine and Guanine do the same. Then as the temperature is risen to about 72 degrees, the Taq Polymerase displays its heroic nature and saves the day. It adds free nucleotides to the 3’ end of the primers, extending or hence, elongating it, like a chain. Thereafter, 2 copies of double stranded target DNA are created. By repeating this simple process of denaturing, annealing and polymerization: Voila! At the end of cycle 25, you have 33,554,432 copies of the target DNA. It doesn’t stop there. These very billion copies of DNA in a sample are then used not only for the clichéd cloning, but also the very exciting forensic field for genetic fingerprinting. These PCR-based techniques have been successfully used on animals, such as a forty-thousand-yearold mammoth, and also on human DNA, in applications ranging from the analysis of Egyptian mummies to the identification of a Russian Tsar. It can also identify genetic relationships between individuals, such as parent-child or between siblings, and are used in paternity testing. It’s rising technology, it’s changing, it’s chemical reactions, it’s polymerase chain reaction, it’s Science. -40- Vandita Khanna 11-A Are Aliens Real Or Not Are Aliens Real Or Not? Numerous humans stop what they are doing and stare at the great big twinkling object hovering in the night sky as one question crosses their minds: Have the aliens finally reached us? And are they here to befriend us or destroy us? Some others took this object to be a hoax, another attempt to prove to people that aliens are real. Who is right in their belief? Throughout history, people have talked of ‘aliens’ and ‘UFO’s’ (Unidentified Flying Objects), but do they exist? Etchings have been found on walls in caves of human shapes, except with the strange shaped head and eyes. Up till today, those who say they have seen ‘aliens’ all give similar descriptions. There are hundreds of people all over the world who claim to have seen UFO’s, either in flight or hovering over them. But have these people actually seen them or are they just trying to cause a stir, see their names in the papers perhaps? On the other hand, arguments stand that if man can build ships to fly billions of miles into the unknown, design suits and breathing equipment to help protect them whilst out there in the universe, why can there not be aliens who can do the same? Perhaps they can be even be more advanced than us. Why ings for this article, my attention was caught by an incident which was published by Patty Brown on the 27th of March 2010: “In July 1947, near Corona, New Mexico, after a hot and humid afternoon, a huge thunder- should it be that we, humans, are the only living creatures, able to fly and explore other planets? How do we know there have not been ‘aliens’ here on earth long before we came into being? There have been many films depicting ‘aliens’ in different forms, colors and skin types, but nothing really matches what have been supposedly seen and photographed. Many believe that the painting called ‘The Baptism of Christ’ depicts a disk shaped object in the sky, thus feeding the minds of those who believe that ’aliens’ do exist. We know there are planets out there in far off galaxies that can support life, so why not alien beings? While I was reading about various UFO sightstorm filled the night sky which was usual for sheep rancher Mac Brazel. He was used to the sounds of thunder, lightning and wind, but this night he heard a sound that worried him: -41- Are Aliens Real Or Not an extremely loud noise like a crash. Thinking no more of it, he retired for the night, sleeping through the rest of the storm. The following day, Brazel went off to check his land for any damage only to find strange looking debris in a field. He picked some of the unusual looking materials and took it to his neighbor who urged him to report his find. After reporting his find to the Roswell N M authorities, he was then questioned by the local radio reporter Frank Joyce who also reported the find to Roswell Army Air Force Base. On July 8th, a statement was released to the press confirming the Air Force had in its possession a ‘Flying Disc’. Later the statement was changed and the disk was then changed to a weather balloon. All the debris was removed and taken to Air Force Headquarters in Ft. Worth, Texas, and later changed for weather balloon material. Back at Roswell, a funeral home was contacted and 4 child sized hermetically sealed coffins were ordered. A nurse was called to assist in an ‘alien autopsy’ and even though she was sworn to secrecy, she confided in the mortician and drew him a sketch of what she saw. She was later ‘transferred’ but never seen again. The news of the flying disc made headlines in the news across the globe which had Brazel regretting the day he found the debris. It was said that a number of people had seen the UFO wreckage and alien bodies. The wreckage and alien bodies are now being stored at Roswell temporarily before being flown to Wright-Patterson field in Ohio.” The above incident proves that nothing is impossible when it comes to life beyond that of ours on Earth. We just have to be broad minded and accept that we may not be the only living creatures in our galaxy or the galaxies beyond ours. But until we get sufficient evidence, we don’t know anything for sure. Only speculations can be made. Thus, the question still stands: Are aliens real, or just another figment of our imagination? Do you believe in Aliens? Vani Shriya: No, but I do believe that its asking a lot to accept that Earth is the only planet in the only solar system in the only galaxy out of millions that is capable of supporting life; and believe that its more probable than not that life on other planets does exist - just not in this solar system. Jaya Mehta: Yes I do believe in aliens and that the world will be inhabited by welldressed and better looking et creatures who will dress like the 70's 80's Yunhee Ji - Yes, Jaadu! Aditi Banerjee 11-A The Fermi Paradox The apparent size and age of the universe sug- gest that many technologically advanced extraterrestrial civilizations ought to exist. However, this hypothesis seems inconsistent with the lack of observational evidence to support it. Or, in Enrico Fermi’s words, “Where are they?” -42- -43- The Hitchhikers Guide To The Galaxy The Hitchhiker’s Guide To The Galaxy Everyone has bad mornings. You wake up late, you stub your toe, you burn the toast... but for a man named Arthur Dent, this goes far beyond a bad day. When he learns that a friend of his is actually an alien with advanced knowledge of Earth's impending destruction, he is transported off the Earth seconds before it is exploded to make way for a new hyperspace motorway. And as if that's not enough, throw in being wanted by the police. Add Earth II, an insane electronic encyclopaedia, no tea whatsoever, a chronically depressed robot and the search for the meaning of life, and you've got the greatest adventure off Earth. Hitchhiker’s Guide to the Galaxy 1. The Guide to the Galaxy- A Guide about Everything 2. The Toaster Knife 3. The Babel Fish – A fish which makes every language understandable 4. The original Thinking Cap – A cap which helps you think and is powered by lemons 5. Sub Etha Sens-o-Matic – A device which is put on your thumb and helps you hitchhike. -44- Star Wars Star Wars Science Fiction movies first became popular in the 1960’s with the release of Star Wars and Star Trek; movies over 30 years old and still being watched by children and adults alike all over the world. A long time ago (yet somehow how in the future) in a galaxy far, far away…..STAR WARS. The most famous of all science fiction movies and shows, Star Wars shows us gadgets and technology we wish we had. So far one of the only star wars like things we’ve managed to achieve is doors that open when we approach them, but we’re going to reach giant space ships and rocket gliders soon Star Wars 1. Light Sabers – Used by the Jedi to kill their foes light sabers are beams of energy that emit from a sword hilt and can cut through anything except other light sabers. 2. The Droids – Super intelligent robots that help the Jedi Droids are a crucial element in the six Star Wars movies 3. Blaster Guns – The gun of choice for the Jedi (and later Sith) army the guns are the main weapon through most of the two trilogies coming in second only to the light saber. 4. Space Ships – Space ships like the one in the picture are used not only as a means of travel but also as a base of operations for both sides, the most notable two being the Millennium Falcon and the Death Star. -45- Fun Facts Fun Facts!!! 13. The Humming bird is the only animal that can fly backwards. 1. The most dangerous animal in the world is the house-fly. Because of its hab- 14. There are more living organisms on the skin of a single human being than there are humans on Earth. 2. Snakes are the only true carnivores because they eat nothing other than animals. 15. Cheetah’s can accelerate from 0 to 70 km/h in 3 seconds. its of visiting animal waste, it transmits diseases more than any other animal 3. Fleas can jump 130 times their own height. In human terms that is equivalent to a 6 foot man jumping 780 feet into the air. 4. The ears of a cricket are located on the front legs, just under their knees. 5. An ostrich’s eye is bigger than its brain. 6. The legs of a locust are about 1000 times more powerful than an equal weight of human muscle. 7. The letter “J” does not appear in the periodic table. 8. Shrimps hearts are in their heads. 16 It’s impossible to sneeze with your eyes open. 17. Starfish don’t have brains. 9. Cats have over a 100 vocal sounds while dogs have around 10. 10. Porcupines float in water. 18. Lobsters have blue blood. 11. The microwave was invented after a researcher walked by a radar tub and a chocolate bar melted in his pocket. 19. Sharks’ teeth are literally as hard as steel. 12. Hawaii is moving towards Japan at a rate of 4 inches per year. -46- Shome Advani 9B+ -47- The Synthetic Life The Synthetic Life The Synthetic Life: Pros and Cons Winner of the Science Essay Prize 2010 Put in about 40 million dollars of financial backing, more than a decade of determination, a challenging dream, four bottles of chemicals, some common microbes and a DNA synthesizer and you’ve got yourself the recipe for the world’s first synthetic life form. Genetic entrepreneur Craig Venter began his research in 1995 when he sequenced the first two genomes in history. The process of determining the exact order of the 3 billion chemical building blocks (called bases and abbreviated A, T, C and G) that make up the DNA is called genome sequencing. He describes his fifteen-year long journey as one that was much longer than he expected. Craig Venter and his team began their work by learning to write the genetic code for synthetic pieces. Venter and his team ultimately succeeded in creating genetic code longer than 1 million letters. Learning how to synthesize this cell meant mastering a field of chemistry scarcely visited, but it also resulted in creating the first ever multiplying organism whose parent was a computer. To create the organism, Venter's team began with a computer reconstruction of the genome of a common bacterium, Mycoplasma Mycoides. The information about the genome was fed into a DNA synthesizer, which produced short strands of the bug's DNA. These strands were then stitched together by inserting them first into yeast and then into E. Coli bacteria. The bugs' natural repair mechanisms saw the strands as broken fragments and reassembled them. After several rounds, the scientists had pieced together all 1m letters of the bacterium's genome. To mark the genome as synthetic, they spliced in fresh strands of DNA, each a biological "watermark" that would do nothing in the final organism except carry coded messages, including a line from James Joyce: "To live, to err, to fall, to triumph, to recreate life out of life.” The scientists then took the synthetic genome and transferred it into another kind of bug. As this bug multiplied, some of the bugs’ progeny discarded their own DNA and began using the synthetic genome. Scientists all over the world believe that this breakthrough will be a source of as much controversy and debate as the cloning of Dolly the sheep and the splitting of the atom. While some defend its benefits, others argue that this ‘miraculous’ discovery will have unimagined fallouts. Since his discovery, Craig Venter has often been accused of “playing God”. Unfazed by -48- these accusations, Venter asserts that the creation of this cell helps us understand how life works. He has proposed many uses for such a cell making its uses and advantages seem limitless. The potential benefits of research on synthetic life are many. Venter’s company “Synthetic Genomics” suggests that we might one day be able to create life forms that form the basis of new environmentally friendly fuels, as well as new life forms that consume pollutants and reduce carbon dioxide in the atmosphere. Venter has secured a deal with the oil giant ExxonMobil to create algae that can absorb carbon dioxide from the atmosphere and convert it into fuel — an innovation he believes could be worth more than a trillion dollars. The uses of this cell might even go as far as to include vaccines for the common flu and biological based electron parts. Another interesting application of the cell is to use it to clean oil spills faster than they are cleaned now. Many believe that while this organism does present certain risks, the potential for benefit is far greater than the risk of harm. Critics of this discovery present strong ethi- cal arguments. They claim that the risks involved in the creation of new life are significant. Some say that it is possible for new and dangerous infectious organisms to be created that will kill on a massive scale. Others argue that this could set the groundwork for bioterrorism by being a gift to terrorists bent on developing weapon-ized microbes. The strongest ethical argument against the creation of this life form is that of human beings messing with Nature’s order of things. Certain scientists denounce this breakthrough as man playing God. They argue that trying to mimic billions of years of Nature’s evolution is not a recipe for success rather one for complete disaster. There are a number of people who find this mimicry. They believe that there are certain areas that are better left alone. While the pros and cons of synthetic life are many, one thing is clear – it stands on its own as a groundbreaking creation. Good or bad, synthetic life promises an enormous impact-whether it is unlocking the door to a better life or opening -49- The Ignite Experience The Synthetic Life Pandora’s box. Quoting a line from a Spiderman movie, ”With great power comes great responsibility.” Venter agrees. He told BBC in an interview, "It's clearly a dual-use technology and that requires immense responsibility for whoever's using it. We are entering an exciting new era where we're limited mostly by our imaginations." Vaasvi Goyal Alumnus Metabolic materials (semi-living things) used in architecture can be made to have all kinds of properties – from the ability to extract carbon from the atmosphere to the ability to self-repair. These buildings then become connected to nature and interact with it, feeding off it without harming it. The Ignite Experience When the four of us (Kaamya Sharma, Riya Kothari, Mehr Mehta and Nimran Kang) left for Ahmedabad to receive our prize from Doctor Abdul Kalam, we felt extremely honoured. We had entered an idea for a competition called Ignite, where children give ideas to help the world. The essence of the competition was ‘you send the ideas in, and we’ll act on them’. We won third prize for our idea in the category of class eight and under. We reached Ahmadabad on the morning of the 8th of November and went to IIM Ahmedabad where the whole function was to be held. When we reached the campus we saw everyone else’s ideas and all of them were very innovative and different. Ignite is organized annually by the by the National Innovation Foundation (NIF). This was our submission for the competition: TITLE - The cycl - o - cleaner DETAILED DISCRIPTION - This is a cycle that is very helpful for the enviroment. It has two cylindicular brooms attatched to the back wheel. These rotate due to the gears that connect the rods. The brushes are close together so that when they rotate the dust slips through and is pushed to the sides of the road, cleaning the driveway or road. -50- This cycle includes an extra contraption that can be attatched to the front of it. This contraption is a dustbin, meant to collect large scraps and pieces of garbage which look untidy even at the sides of the roads. The cycl-ocleaner could make life easier for people who clean roads for a living. It is a new, convenient way to clean roads. The creation of this idea was based on the hope that it would help people who spend their whole day cleaning roads, on foot. In our stall the organizers had made a huge poster with the details of our idea, for us. They had even made a life size prototype of our idea that actually worked! We rode the cycle around the campus and cleaned up the place. The excitement in the air escalated when Dr. Kalam reached the campus. Everyone was just as eager as us to show him their ideas. He was very curious and treated us like his friends. A while later, we went into the auditorium where Dr. Kalam awarded prizes to everyone. Each of us, the winners, received colossal trophies! After that he gave a very inspiring speech. Later that day, all the participants interacted with each other, and we discovered many children who were really diamonds in the rough. I mean, seriously, what would you say if you found out a 17 year old girl had a minor planet named after her and a 16 year old boy had been given an offer to work at NASA? We returned to Delhi, amazed at the excellence that so many Indians have achieved, be it Dr. Kalam himself or the young students we met. We came home and realized that not only had our trip been a great experience, but also a huge inspiration. -51- Kaamya Sharma and Riya Kothari 7-C As we become more conscious of our environment and climate it becomes more important that we reduce our dependency on non-renewable sources of energy. Now, by using this gadget, you can power your home and/or small gadgets with green energy produced from your own hands! In this gadget one is meant to compress the rudder constantly just like they do while using their palm/fingers. As you can the center of the ball is connected through a rubber pipe to a rectangular housing which houses a rotor blade, 2 permanent magnets and a coil central shaft with gears. This is like a small motor. The rotary blade is powered by the wind pumping through the pipe only in one direction. The shaft with gears is connected to an armeture containing several turns of electrical wires, placed between two permanent magnets. Therefore it rotates albiet at a much higher rate as a result of electromagnetism created byt the two magnets on either side of the shaft, electricity is generated in the coils which is stored in the batteries. This is in efeect the conversion of mechanical energy into electricity which is stroed in the rechargable batteries. This excercise with the rubber ball is very helpful for paralytic patients, whose upper limbs have been affected, as they have to undergo physiotherapy to regain the lost strength of their muscles. Thus by using this gadget they an regain their lost strength, as awell as produce energy which can be used as electricity -52-later on, that to at the same time Rishabh Chatterji -53- Kanishk Ali Khanna Phineas And Ferb PHINEAS AND FERB Any kid on a weekend would wake up to say, “Ah, no school today, I can watch ‘Phineas and Ferb’ all day!” That’s right, we’re talking about the all time favorite Disney cartoon whose popularity only continues to grow by the day. ‘Phineas and Ferb’ is, for those of you who aren’t aware, a twenty minute long animated TV show, each episode focusing on a different invention made by two brothers during their summer vacation. The inventions are crazy and unimaginable, they are big and innovative, they are fun and creative but most of all, they are an inspiration to each individual who has been told that they need to get their feet back on earth, for what they are imagining is impossible. So, we decided to get into action and see what the youth’s favorite invention is in their favorite show. Here, we’ve ranked the different episode based on our findings. II. Voice-inator The voice-inator makes turns peoples voices to a higher pitch so that Doofenshmirtz own voice sounds lower. III. Shrinkspheria The Shrinkspheria causes everything Doofenshmirtz dislikes to shrink to exceedingly small sizes. IV. Make-up-your-mind-inator This machine aims to destroy anybody who is having trouble making up their mind. Favourite Doofenshmirtz Inventions I. Termite Controlling Helmet Doofenshmirtz designs a helmet that enables him to control termites. His plan is to make them eat up all the wood, so that he can sell aluminium siding. -54- Phineas And Ferb V. Poopinator This invention is used by Doofenshmirtz to hypnotise pigeons into pooping on his brother. -55- Phineas And Ferb Phineas And Ferb Favourite Phineas and Ferb Episodes I. Candace Loses Her Head In this episode Phineas and Ferb carve their sister, Candace’s face into Mount Rushmore as a birthday present. Using what appears to be mountaineering gear and dynamites along with other digging equipment. The Best named ‘inators’ I. Giant Robotic Penguin Icy Freeze Your Socks Off Breath-inator thingy Doofenshmirtz plans to freeze the entire Tri state area using giant penguins, he feels this shall help him sell hot chocolate. II. Toy To The World In this episode, prompted by their sister Candace’s new job at a toy store, the boys decide to create their own toy, modeled around their pet platypus, Perry. III. It’s a Mud,Mud,Mud,Mud World Phineas and Ferb try to help Candace learn how to parallel park by remodeling their family car into a monster truck and organizing a monster truck rally for her to take part in. -56- II. Who's Blinded by Sandinator or Who's Crying Now-inator Doofenshmirtz uses this machine to kick sand over the house of a boy who used to bully him. -57- It writes on air! It floats on air! Its 100% Bio-degradable! We all know about global warming and its effects so I invented a mode of communication that won’t use electricity and won’t pollute the world. With the Aeropenator you write what you want on air and write the adress of the person you’re writing to and then blow on the message gently and within seconds it will-58reach the other person. Kanishk Ali Khanna -59- It never gets tired It can shoot lasers out of its eyes Its red nose beeps when there is danger It has a police siren It shoots bullets It can fly It can talk It can shoot water -60- -61- The Big Bang Theory Where Did The Earth Come From Where Did The Earth Come From One theory is that, the earth came from a cloud in space. Scientist think that the Earth was formed by a huge cloud of gas and dust around 4500 million years ago. A star near the cloud exploded, making the cloud spin. As the cloud spun around, gases gathered at its centre and formed the Sun. Dust whizzed around the sun and stuck together to form lumps of rock. In time, the rocks crashed into each other to make the planets. The earth is one of those planets. Is “BORING!!!” the first thought that comes to your mind when someone says, “Science”? Well Chuck Lorre’s “The Big Bang Theory” not only changes that, but makes you want to become a physicist. “The Big Bang Theory” is about four socially awkward super geniuses and their interaction with the outside world . Though it’s mostly a comedy, you learn science, good English and a little bit philosophy and it is filled with fun facts and quotes. Our top 5 favourite quotes from the Big Bang Theory are - Krishna Singh 7-A The History Of The World According To The Big Bang Theory Our whole universe was in a hot dense state, Then nearly fourteen billion years ago expansion started. Wait... The Earth began to cool, The autotrophs began to drool, Neanderthals developed tools, We built a wall (we built the pyramids), Math, science, history, unraveling the mystery, That all started with the big bang! BANG! "Since the dawn of man" is really not that long, As every galaxy was formed in less time than it takes to sing this song. A fraction of a second and the elements were made. The bipeds stood up straight, The dinosaurs all met their fate, They tried to leap but they were late; And they all died (they froze their bottoms off). The ocean said "Pangaea? "See ya, wouldn't wanna be ya!" Set in motion by the same big bang! It all started with a big BANG! It's expanding ever outward, but one day It will pause, then start to go the other way; Collapsing ever inward, we won't be here, it wont be heard. Our best and brightest figure that it'll make an even bigger bang! Australopithecus would really have been sick of us Debating how we're here, They're catching deer (we're catching viruses). Religion or astronomy (Descartes or Deuteronomy); It all started with a big bang! 1. Sheldon: (on why he isn’t going for a fundraiser) Leanord: How do we tell Sebert you’re not coming? Sheldon: Tell him that Dr. Cooper feels that the best use of his time is to employ his rare and precious mental faculties to tear the mask off nature and stare at the face of god. Penny: Sheldon, its Saturday night. You’ll be doing laundry. Sheldon: Don’t tell him that, tell him the mask thing . 2. Sheldon: “I'm polymerized tree sap and you're an inorganic adhesive, so whatever verbal projectile you launch in my direction is reflected off of me, returns along its original trajectory and adheres to you.” (Translation: I‘m rubber you’re glue, whatever you say bounces off me and gets stuck to you) 3. Sheldon: “What do I do?” Leonard: “Alright let me see if I can explain your situation using physics. What would you be if you were attached to another object wrapped helically around an axis? “ Sheldon: “Screwed” (then realizes his situation) -62- -63- The Big Bang Theory Evolution, Yet No Solution Evolution, Yet No Solution 4. Sheldon: “I agreed to speak to you this evening because I was told you are the best and the brightest of this university’s doctoral candidates. Hmm of course that’s like saying you’re the most important electron in a Hydrogen atom.” 5. Sheldon: (explaining his version of rock paper scissors) “Scissors cut paper, paper covers rock, rock crushes lizard, lizard poisons Spock, Spock smashes scissors, scissors decapitate lizard, lizard eats paper, paper disproves Spock, Spock vaporizes rock, and as it always has, rock crushes scissors.” -64- Evolution is often described as a process by which different organisms gradually develop from their earlier forms. Man and apes are supposed to have a common ancestor, we all know this, but hear this one… Two strains of Africa’s most notorious malaria transmitting mosquitoes appear to be evolving into two genetically distinct species. Evolution is usually development of the species that increases their life span and helps them survive longer, but this evolution is seriously dangerous for humans. This evolution means the insects could become immune to strategies adopted to control malaria: a deadly disease killing thousands of people every year around the world, especially in Asian and African countries. Researchers at the Imperial College, London who studied the Anopheles gambiae mosquito, the chief carrier of the malaria causing protozoan in Sub-Saharan Africa, found that 2 strains of the mosquito were rapidly diverging in their genetic make up, despite appearing physically identical. According to scientists, genetic differences between the 2 strains, known as M and S, were scattered throughout the insects’ DNA. The changes had occurred in areas likely to affect development, feeding behaviour and reproduction. A further study comparing the 2 strains showed that they seem to be evolving differently. Maria Lawniczak, a member in the research team, said, “From our new studies, we can see that mosquitoes are evolving more quickly than we thought and that unfortunately, strategies that might work against one strain of mosquitoes might not be effective against another.” Thus it is important to identify and monitor these hidden genetic mutations in mosquitoes to succeed in bringing malaria under control. It is a point to ponder upon that such microscopic changes in the living organisms as well as our surroundings can cause such a great deal of destruction and damage. Akarshita Dhawan 12-C -65- What Do You Choose To Believe What Do You Choose To Believe? A Miracle of Science And Moses said unto the people: 'Fear ye not, stand still, and see the salvation of the LORD, which He will work for you to-day; for whereas ye have seen the Egyptians to-day, ye shall see them again no more for ever. astounding. As the myth portrays, after being led out of Egyptian slavery by Moses, the Jewish prophet, the Israelites find themselves trapped; be- The LORD will fight for you, and ye shall hold your peace.' And the LORD said unto Moses: 'Wherefore criest thou unto Me? Speak unto the children of Israel, that they go forward. And lift thou up thy rod, and stretch out thy hand over the sea, and divide it; and the children of Israel shall go into the midst of the sea on dry ground.” And as Moses stretched out his hand over the sea, the LORD caused the sea to go back by a strong east wind all night, made the sea dry land, and the waters were divided. And the children of Israel went into the midst of the sea upon the dry ground; and the waters were a wall unto them on their right hand, and on their left. And by the LORD, hence it was done. Miraculous. Extraordinary. Phenomenal . Words are not enough to describe this amazing feat. Instead, engineers argue that the event likely took place in the Nile Delta, where a similar wind setdown was recorded in the late 19th century. Using satellite data and earlier research into the ancient geography of the Nile Delta, researchers etimated the lay of the land around 1250 BC and ran their simulation. The model suggested that the crossing could have taken philosophers over the span of 3000 years from its occurrence, this phenomenon was truly With a revolutionary breakthrough, research- Speculated upon by many scientists and place at Manzala -- about 80 miles north of the port of Suez -- where an ancient branch of the Nile entered the lagoon, then called the Lake of Tanis. Manzala runs east to west and also matches the alternate Biblical translation of "Reed Sea," as it was once filled with papyrus reeds. The engineers found that if a 63 mph east wind blew across the water for 12 hours, a 2.5-mile-long, three-mile-wide stretch of mud flat would have been exposed. That path would remain clear for about four hours, giving the Israelites plenty of time to make their escape. The researchers' findings also suggest that, if the pharaoh's troops were crossing the mud flats when the wind died down, they would have bit hit by "an advancing wall of churning water." Or as Exodus puts it, "the waters returned, and covered the chariots, and the horsemen, and all the host of Pharaoh that came into the sea after them; there remained not so much as one of them." Devout Christians, Muslims and Jews will continue to see the work of a divine hand behind the unlikely combination of factors that allowed the Israelites to escape. Others, meanwhile, will argue that Moses and his flock were simply in the right place at the right time to fore them lies a seemingly impassable body of water, while behind them the pharaoh's army is fast approaching. Moses appeals to Jehovah for help, and God obligingly blasts a "strong east wind all night" into the sea, creating a path to freedom for the Israelites and, when the wind subsides, a watery grave for the Egyptians. By the Lord’s might, it was done, they said. Behold the supernatural, behold God’s supreme power.; the question is though- Was it really? The parting of the Red Sea is one of the Old Testament's most spectacular episodes. ers at the National Center for Atmospheric Research in Boulder, Columbia, in the U.S.A., say they have found a plausible natural explanation for this apparent miracle -- though not at the Red Sea itself. Using computer models, they have discovered that a strong wind blowing across the perfect spot -- a sharp bend where a shallow river meets a coastal lagoon -- with the right contours on the bottom of the waterway, could result in water being driven upstream and downstream, opening up a dry walkway. Hence we witness the miracle. That phenomenon is known as a "wind setdown," but, for those of you who believe the account in Exodus, it's unlikely to have occurred at the Red Sea, as noted by software engineers at the National Center for Atmospheric Research. That's because the Red Sea runs north to south, so an eastward wind wouldn't have been able to sweep the waters to one side. What Did You Choose To Believe -66- -67- What Do You Choose To Believe take advantage of a rare natural occurrence. The scientists at the NCAR noted that if "a crossing actually took place here, any debris field of military artifacts should be found to the North" of the crossing site. But even if archaeologists found ancient Egyptian skeletons and armor at the site, secularists and believers are unlikely to agree over the supposedly miraculous nature of the biblical episode. We are again left with a coin with two sides. As always, Science battles the mysticism of the religious supernatural. Fact slowly seeps into the sea of theology. What we choose to have faith in is countered by the bitter truth of reality. Was it really God’s hand, or a random burst of strong wind? Did Moses really part the Red sea, or did he just check the weather forecast? In the end, it’s really all about our faith. What do you choose to believe? Rishabh Prakash 11-C Do you believe in miracles? Matter Matter Archimedes told his daughter, You should put gold in water, To find the density of matter, More density if the object is fatter. Liquids are light, Solids are mostly easy to sight. Through the gases in the air, A bird can fly; But on land a fish will die. Most people cannot fathom, That the smallest particle of matter is an atom. Others have no clue, That several atoms bond to form a molecule. However, thought Archimedes’ daughter, Liquid, Solid or Gas, how does it matter? Sukoon Dinodia 9-C Yes No Sometimes -68- -69- Plasma - The Fourth State Of Matter Plasma - The Fourth State of Matter Most of us have been taught that there are only 3 states of matter- solid, liquid and gas. As surprising as it may seem, there is a fourth state of matter - plasma. You may assume that plasma isn’t important, but it is, in fact, it is the most abundant form of matter in the universe. When a solid is heated to a certain temperature it becomes a liquid, when that liquid is further heated it changes into a gas. As the temperature is increased, the atom is stripped of electrons and plasma is formed. Hence, plasma is made up of electrons and ions. As the negatively charged electrons and positively charged ions can move freely together, their charges cancel each other out and Plasma is considered neutral. Since Plasma is made up of positively and negatively charged particles, it interacts with magnetic and electric fields. This property makes it different from the other three states of matter. Although plasma behaves like a gas, when it comes to the magnetic and electric field, it is very different. The magnetosphere is constituted by plasma which is dominated by the earth’s magnetic field. By studying the magnetosphere, scientists have been able to understand the phenomena behind auroras. The ionosphere, again plasma, conducts electricity, especially in the Polar Regions, because of the influence of the earth’s magnetic field. The ionosphere is a very special kind of plasma as it contains fair amount of neutral atmospheric molecules which collide with the ions and electrons. And since when electrons hit an obstacle, they can produce light (television screens and computer monitors operate that way), leading to the idea that perhaps the aurora was produced like that, too, when beams of electrons from outer space entered the atmosphere. Well, plasma is the matter found in the interstellar space (stars), all the stars that we see shining, they are nothing but plasma. Yes, plasma is found abundantly in the universe, but it’s only found in limited places on earth, like plasma is found in a lightning bolt, in the fluorescent lights, in flames and aurora. Natural plasma only exists at either very high temperature or low temperature vacuum. Artificial plasma can be made by using electrical charges on gas like neon signs. Natural plasma is so hot and the energy is so high, that is vaporizes any material is touches. Thus scientists still haven’t found an effective use of it. PLASMA is thus the fourth state of matter that we don’t encounter in our daily lives, but it is the most common form of matter and makes up 99% of the visible universe! Yashitha Jeet 10-A -70- The Bose Einstein Condensate The Bose- Einstein Condensate In early 1920’s, Satyendra Nath Bose studied the idea that light came in little discrete packets, now also known as “photons” or “quanta”. Bose classified certain rules for deciding when two photons should be counted as identical or different. These rules are presently called “Bose statistics” or sometimes even “Bose-Einstein statistics”. However, Bose found trouble in advertising his conclusions as not many people believed him. So he sent his findings to Einstein with the hope that he would be able to use his influence to spread the findings amongst people through magazines, newspapers, etc.. Apart from helping Bose to publish his theory, Einstein also scrutinized his ideas. He predicted that Bose’s rules might also be applicable to the behavior of the atoms present in a gas. However, it was later discovered that not all atoms behave in the way Einstein predicted. What Einstein did not realize was that he was actually unable to fully observe and draw all the right conclusions from his equations and studies. The most important effect that his equations were predicting was that at nor- mal temperatures the atoms are present at different quantum levels (energy levels) and at low temperatures most atoms are in the same quantum level. These atoms piling up at the lower most quantum level is what we call Bose-Einstein condensation. This gives form to a different material. It means that all the atoms are absolutely identical. There is no possible measurement that can tell them apart as all the atoms are present one on top of the other. That is why it took people a long time to understand what BEC really meant. Atoms can actually be all in the same place like this, but this fact goes against convention, for atoms do not take this form normally. For example, we have tables, chairs, and all these other objects that have their shapes because their atoms are arranged in different places. It is only at special incredibly low temperatures that atoms lose their individual identities and coalesce into a single blob (BEC). Some people have also called this material a “super atom”. HOW IS BEC MADE? It took 70 years for Einstein's concept of Bose-Einstein condensation in a gas to come to be known amongst the public. It was first accomplished by Eric Cornell and Carl Wieman in Boulder, Colorado in 1995. They did it by cooling atoms to a much lower temperature than had been previously achieved. Their technique used laser light to first cool and hold the atoms, and then these atoms were further cooled by something called evaporative cooling. The temperature that had to be reached to cool these atoms was less than one millionth of a degree above absolute zero, which is millions of times colder than the lowest temperature found in the depths of outer s p a c e . Tw o -71- The Bose Einstein Condensate broad techniques were used to reach BEC. In a crude way, the first step involves shining a laser light on the atoms to cool them to about 1/10,000 of a degree above absolute zero, and the second step involves evapora- 1. Laser Cooling tive cooling. These two stages are just like taking a pan out of a hot oven and letting it cool off in air first, and then dunking it in ice water. large bowling ball by shooting ping pong balls at it. When we think of laser cooling we immediately think of a contradiction in the phrase. How does shining of light make something colder and not hotter? You immediately think that if sunlight fell on our hand the light is absorbed and turns into heat. You are right in thinking so. But, yet we use laser lights to cool atoms. The trick to making atoms colder is to make the light bounce off them rather than to make the light get absorbed by the atoms. It is experimentally seen that the light bounces off with more energy than when it hits the atoms. It took scientists quite a long time to figure this out. However, when they did, they did this by using the concept that laser light comes as a stream of photons. These photons (being extremely small compared to the atom) when used in large numbers are successfully able to push the atoms around by bouncing off them; just as we can move a When the photons are bouncing off the atom, the electron in the atom absorbs the photon and jumps up to a higher energy level, and then it quickly jumps back down and spits the photon back out. But we have to remember one thing, that every type of atom responds only to a specific colour of light as the electrons of the atom require a specific colour to change their energy state. If the colour is wrong the photons go right through the atoms. The complexity of the process of laser cooling is further enhanced by the fact that only the vibrations in the floor of a normal building make the color of a laser change so much that it ceases to match the atoms any more. Thus, Scientists have to work very hard to make the laser light stay the proper color. The Bose Einstein Condensate This is what physicists call “Optical Molasses”. Now, won’t the atoms eventually wander out of the laser beams and manage to hit the walls of the box and warm up? To prevent the atoms from wandering away, physicists arranged the laser beams so that atoms that tried to move away from the center (where the laser beams crossed) would be pushed back into the middle by more light hitting them from other laser beams. This is known as a “laser trap”. We just put a couple of small coils of wire around a cell and run current through them in opposite directions. That makes a magnetic field that shifts the color of light the atom wants to absorb slightly. Thus, by using the magnetic field shift and the Doppler shift together, the light will slow the at- b. Using The Doppler Shift a. Laser Cooling and Trapping: Optical Molasses So if I have the right color of laser, it allows us to slow down the fast atoms without pushing the slow ones backwards because of the Doppler shift. But this is just in one direction while atoms in the box are bouncing around in all directions. Thus, we encounter yet another problem. How should we slow all of them down? So scientists thought of sending the laser beam at the atom from all different direc- tions. Then if we adjust it to exactly the right color all the atoms will get cold and we can obtain big bunches of very cold atoms. -72- oms down and push them into the middle of the cell where it will hold them. They look bright to us because of the entire laser light that is bouncing off them. Now that the problem of the atoms hitting the walls and heating up is solved we face another problem. Can’t they heat up by bumping into each other? That is why we attach a vacuum pump a to the BEC apparatus. This pump sucks almost all the air out of the glass cell, so that, except for the few atoms required to trap, there are no other atoms remaining to bump into the cold atoms. Now when we consider slowing atoms by laser cooling one problem arises. How do we prevent the laser light from hitting the already slow atoms and from making them faster and hotter? Or how should we avoid hitting the slow atoms with light while hitting the fast ones to slow them down? Some very clever physicists figured out how to do this by using the idea that the color or the light is Doppler shifted by the atoms' motion. What is the Doppler shift? The Doppler shift states that if an atom is go- The Doppler Shift is the change in the pitch of sound as an object moves to and away from you. We experience this everyday but fail to note what it really means. ing towards the laser light, it sees the light shifted to a bluer color, and if it is going away from the laser, it sees the light as redder than it really is. And the amount of the shift depends on the speed. So if the laser is just the right color, the Doppler shift of a fast atom will make the light look the right color for exciting it, and so photons will bounce off and slow it down. But if the atom is moving slowly, or in the wrong direction, the Doppler shift will be different, and the laser light will be the wrong color to excite the electron. In that case, the laser light just goes right by the atom. Therefore the scientists have to keep adjusting the colour as the atom cools down. -73- The Bose Einstein Condensate c. Magnetic Trapping The Bose Einstein Condensate What is Bose-Einstein condensation good for? We had said earlier that the laser cooled the atoms to less than 1/10,000 of a degree above absolute zero. But we have to keep in mind that that is still way too hot for BEC and the laser light cannot cool the atoms any further. This is because each photon gives a certain kick to an atom, so when the atoms are moving as slowly as possible, they are still always getting jostled around by the amount of a single photon kick, and this motion is what limits the temperature. Therefore scientists had to use the second method, mentioned earlier, known as evaporative cooling. But before this they still needed to find a way that would further keep the atoms from hitting the walls of the container, for this they used a magnetic trap. We have to keep in mind that this trap is not the same magnetic field used for the laser trap. Here a very strong magnetic field is used that pulls directly on the tiny bar magnets attached to each atom. If the right kind of magnetic field is made, it will pull on those little bar magnets and help Magnetic Trapping is what is used in Particle Accelerators to move atoms at 99% of the speed of light. keep the atoms in the center of the cell without any light. These cold atoms are held in the same way as the tops that spin for a very long time because they have magnets in them and are held by magnetic fields. BEC is too new and we know too little about it for it to become immediately popular. There are also some engineering problems that will have to be solved before BEC can be used extensively. 1. It is the most fragile thing that has ever existed! 2. Physicists are still making very small quantities of it, only a few million atoms at a time. 3. Scientists can only make it out of a few different types of atoms. FUTURE USES AND BENEFITs All the atoms in the condensate are exactly the same. So this means that we now have much better control over atoms: where they are and how fast they are moving. In fact, we now can control them as well as the uncertainty principle will allow. It is a pretty good bet that someday BEC will be appropri- 2. Evaporative Cooling Evaporative cooling uses the same physics that cools a cup of hot water. In the water, the most energetic water molecules escape from the cup and come off as steam. When they do this, they take away more than their share of heat, and the atoms left behind in the cup are colder because they have lost energy. Similarly to make BEC, the most energetic atoms are allowed to escape from the magnetic trap. In order to do this, we lower the edge of the bowl at the rate that gives us the coldest atoms in a given amount of time. What does a Bose-Einstein condensate look like? Once the BEC is finally created, it looks like a dense little lump at the bottom of the magnetic trap; kind of like a drop of water condensing out of damp air onto a cold bowl. When it first forms, though, the condensate is still surrounded by the normal gas atoms, so it looks a bit like a pit inside a cherry. This is a picture of the actual data of Wieman and Cornell when they performed the experiment. These pictures show the change as they cool the atoms from 400 billionths of a degree above absolute zero down to 50 billionths. -74- -75- ate for making very sensitive measurement instruments and maybe making tiny structures, like the ones used in computer chips. Gautam Nagpal 12-B -76- -77- Kinetic Theory Simple Machines Simple Machines Kinetic Theory We know that all substances can exist in three different forms: solids, liquids and gases. These are called states of matter. The theory that explains the properties of solids, liquids and gases is called the Kinetic Theory. It is based on the idea that all substances are made up of moving particles. It explains the properties of solids, liquids and gases in terms of the energy of these particles. Heating a substance gives the particles more energy, enabling them to move around faster and to change from one state to another. A substance changes from one state of matter to another depending on its temperature and pressure. When something changes state, heat is produced or lost as the energy of its particles is increased or decreased. Different substances change state at different temperatures. Nikita Dhawa 7-B 1 2 3 4 5 6 Clues Across: 3. The point of support on which a lever pivots. (7) 4. A ramp. (13) 6. This simple machine lets cars and bicycles roll. (12) Down: 1. A wheel over which a rope is passed, used in lifting things. (6) 2. A metal pin with a spiral ridge round its length, fastened by turning. (5) 5. A pivoted handle used to operate machinery. (5) 6. A simple machine thick at one end and tapering a thin edge at the other, found in a knife blade. (5) Krishna Singh 7-A -78- Answers on Page 84 -79- Off Or On? Off or On?? Theory Of Everything The Theory Of Everything “It is human to search for the theory of everything and it is superhuman to find it” -Anonymous Suppose you have a lamp with a simple on/off switch. Press the switch when it is off and the lamp will be turned on, press it again and it will be turned off. Now suppose you run the following experiment. You turn the lamp on at the start of a minute. Half a minute later, you turn it off. Half of half of a minute later, you turn it back on, then 7 and a half seconds later back off again, and so on throughout the midpoints of whatever time remains. Now the question is this: at the end of the minute, will the lamp be on or off? Since the lamp has been turned on and off an infinite number of times, for every time it has been turned on, it has been turned off, and vice versa. At the end of the minute, therefore, it can be neither on nor off. But it must be one or the other. -80- What is “The Theory of everything (TOE) “ you may ask ? Well it is actually a theory which seeks to provide an explanation for everything, big and small. This theory is considered the “Holy Grail” of Physics and there have been many such attempts to find it , however I will elaborate on two of the most important ones - General relativity and Super String Theory. There is such a theory that is consistent, however is not applicable to the minutest sub-atomic particles, this theory is known as Einstein’s Theory of General Relativity. Einstein viewed our Universe as a smooth, curved four dimensional surface (at that time the 4th wasn’t heard of, now more have been found, which exist only as formu- lae) the 4th dimension being time. Einstein’s postulate, that the laws of nature should appear same to all freely moving observers was the foundation of the theory of relativity, as it implied that only relative motion was important. This means that the speed of light is measured the same for all freely moving observers, independent of speed at much they are travelling or direction. This also implies that nothing can travel faster than the speed of light. One important aspect of relativity is the relation between mass and energy, which has grown as a very important formula and is usually the first thing that pops into -81- Theory Of Everything people’s minds when they hear “Einstein”E=mc2. This means that when we accelerate an object using energy, its mass increases, making it harder to accelerate anymore. If we were to accelerate it to the speed of light we would require an infinite amount of energy. This formula represented the equivalence between energy and mass, and when a world war was approaching a group of scientists who realized these implications persuaded Einstein to overcome his pacifist scruples and add his authority to a letter to President Roosevelt urging the United States to start a program of nuclear research. This led to the Manhattan Project which ultimately led to the bombings of Nagasaki and Hiroshima. After a longtime of research when he was back in Zurich, Einstein has the brain wave of realisation that equivalence would work if the geometry of space-time was curved and not flat (as had been assumed previously). His idea was that mass and energy would warp space-time in some manner yet to be determined. Objects in spacetime would try to move in straight lines however their paths would appear to be bent by a gravitational field because space-time is curved. This new theory was called general relativity to distinguish it from the previous theory without the component of gravity now called Special Relativity. This forever transformed space and time from a passive background to an active and dynamic one. However this posed one problem that still remains unsolved to this day. The universe is full of matter, and this matter warps space-time in such a way that bodies fall together. Einstein found that his equations didn’t have a solution that confirmed a static universe, not changing with time. So instead of giving up such an everlasting universe he rigged his equations by adding a cosmological constant which warped spacetime in the opposite sense so that bodies would move apart. This repulsion would then balance out the attraction thus making it static. However because of this, Einstein missed out an important aspect due to this change, and if he had stuck with the equations he could have predicted the expanding and contracting nature of the universe. Einstein later noted the Cosmological Constant as the greatest mis- take of his life, however further studies have shown that this constant may have not been a mistake after all. However General relativity was not applicable to subatomic particles. The other theory that is sometimes known as the Theory of Everything is known as Super String Theory. People started taking it for granted that they will expect infinities in their -82- formulas and this idea makes them fatally flawed. Strings on the other hand are 1 dimensional-only length, in string theory these strings are said to move through background spacetime. The ripples will correspond to bosons and fermions, therefore the positive and negative ground energy will cancel each other out resulting in finite numbers. Due to this String theory was called “The Theory of Everything”. This “Super Symmetric String Theory” Quite simply says that all forces and particles are all forms of different vibrations of minute one dimensional strings (possibility that may be membranes) vibrating in 10 dimensions too small to even detect. This means our universe is made of small strings and loops that vibrate in different ways to form the universe. Due to these vibrations we cannot determine what they as they would just appear as any other subatomic particle. Super string theory started taking over Supergravity as this was only a low energy approximation, thus implying it was not the theory of the universe, but just one of the five possible super-string theories. After a few years it was apparent that Super Symmetric String Theory did not give the Theory Of Everything whole picture. There were many such particles which extended in more than one dimension. Professor Paul Townsend did a lot of work on this subject and gave them the name P-branes. A p-brane has length in p directions, a p=1 brane is a string, a p=2 is a membrane or surface. All the p-branes could be found as solutions of the equations of supergravity theories in 10 or 11 dimensions, however these dimensions are so small we don’t even notice them. None of these theories however actually give us the complete “Theory of everything” as they all still have limitations. We are yet to understand many aspects and come up with the true TOE, and Physicist Stephen Hawking has said that there is 50/50 chance that someone will come up with it in the next 20 years. Anirudh Sethi 12-B Today Physicists are working on what is being called the Grand Unified Theory which could explain the origin of the universe and how everthing works. -83- Relativity Relativity Relativity Say you woke up one day in a void. Everything around you was gone; your house, your room, your bed, everything. Nothing was around, not even a star. Now say you want to move around to investigate. Can you move or not? How do you know that you are not stuck in one spot, or that you are not moving toward the left? Can you tell? No. To move you need to move towards or away from something. But if you’re the only body in that void, you can’t say you move. Now say that your bed appears. So there is a something with you in the void. But now how can you say if the bed moves or your move or both? You can’t. I can say whichever. Flip a coin. Who’s right? Now say that your bed went away and the sun appeared in its place. You can’t say that the sun is moving because it is so big, so it’s probably you who is moving. But you can’t really say. In other words you can’t say that there’s one true “at rest”. Sir Isaac Newton gave this principle. You can say that everything else is at rest and you move or that you are at rest and everything else moves, it’s all the same. But wait, you might say, the sun gives off rays! So why not measure how fast the rays go by you? Then you can tell how fast you are moving. No. Because rays of light move at the same speed whether their source is moving or not. Say you wanted to test this out so you took a lamp and started moving away from it. But even as you moved faster the speed of the rays was the same. 3x108 m/s. Even if you stayed in place and the lamp came toward you the speed of the rays would be the same. And this is what Albert Einstein said ““Not only do rays move at 3x108 m/s if their source is held fast or not; they move at 3x108 m/s even if you are held fast or not.” What this says is that you can move as fast or as slow as you want, and rays will go by you at 3x108 m/s all the time. That’s weird, right? You, back in that void, you just cannot say if you move or not. Not that you can’t tell: it can’t be said. But for this to be true, then time also has to be involved. For you and your friend to see the same light ray go by at the same instant, his idea of time must be different from your -84- idea of time! For example we have two people, Bob and Ron. Say Bob is sitting on the pavement and Ron is on a bus going downwards. Now say a meteor enters the Earth’s surface, breaks into two and one piece falls down the road and the other up the road. Now if we take Bob as “at rest”, he sees both the rocks at the same time but Ron sees the one down the road first and then the other. Since Bob is “at rest” he says that I saw both at the same time and hence they did land at the same time. And Ron will say that I saw the one down the road first and then the other but if i take in the fact that I am moving down the road they must stay at rest you tend to stay at rest and if you move you tend to come to rest. Newton then came along and said “No. If you are in motion you tend to stay in motion.” To come to rest you need a force (or de-accelerate). Then there is gravity also. It defines what stays up and what come down. It keeps the moon in orbit too. Now we had to deal with the way gravity acts. If a body has more mass then it also has more gravity. That is why we spin around the sun and not the opposite. So then why do some objects not fall faster than others? This is because the more mass it has the more it wants to stay put… or we say that it has more inertia. These two cancel out and everything falls at the same speed. Shaurya Kumar 12-B "Put your hand on a hot stove for a minute, and it seems like an hour. Sit with a pretty girl for an hour, and it seems like a minute. THAT'S relativity." Albert Einstein Answers to Crossword on Page 78 have landed at the same time. But what happens if we take Ron as “at rest”? He will say that I saw them land at different times and hence one beat the other. And Bob will say that I saw them land at different times but if I factor in the fact that I am moving away from the other then I can see that one did in fact beat the other. So, you can see that when you give up the idea of one true “at rest” you must also give up one the idea of one true time. And if you give that up then you must give up the idea of one true way to see size and mass. As you can see this stirred up a controversy. But what Albert Einstein said next was even bigger. Aristotle gave the concept of inertia: If you -85- Pollution Pollution With a ‘Honk! Honk! Beep! Beep!’, I get up from my sleep. And take a breath of pollution, Not caring to think of a solution. I still see that planet, now not what it was, Green, clean and pollution free, to live we had a cause. But now there’s gray smoke in the sky and garbage in the sea, the rays of the sun stronger than ever and plastic bags on trees. The world that once provided beautiful scenery, Now clear of vegetation and any greenery. And I still don’t stop to think, I still don’t see the sign, Of the crisis that’s on the brink, which may wipe out mankind. Nature we provoke, By letting out industrial smoke. Depletion of the ozone layer, Can we be saved by any prayer? Combustion of fuels in automobiles, Release of carbon dioxide, Harmful deforestation and burning of fossil fuels worldwide, Manufacturing units, factories, and industrialization, Adds to the ever increasing amount of air pollution! Bronchitis, lung cancer, asthma more and more disease! Atmospheric haze and smog reduces visibility. Acid rain from chemical emissions damages property. Destroying signs of life, these effects don’t stop to increase… It’s time we stop this unrest, It’s time to wake, to clear this mess. Let’s come together in a revolution, To save the world from air pollution!!!! Let’s use carpools and public transport, Save energy by minimising machine support, Try to Reuse and Recycle products, Pollution from our lives let’s deduct. Aastha Kamra and Anjani Gupta 9C+ AND 9A+ -86- Ishita Malhotra -87- Maritime Safety And Pollution Maritime Safety And Pollution ‘Maritime’, according to the Oxford English dictionary, implies objects or activities relating to a form of a water body—an ocean or a sea, for instance. Hence, maritime pollution has severe, strong influences on water bodies, creating dilapidated conditions in the sea that can prove inordinately harmful. We know that water is the Additionally, as life in both domains— land and sea—helps, hones and harms the other, the effects of maritime pollution blot themselves onto the very human map as well. The true identity of the phenomenon then calls itself into question, and we find ourselves sliding to unmask it, seeking to really see its cruel strokes upon every life-form it impacts. In essence, there are three ways water bodies find themselves polluted. To begin with, the inordinate proportions of oil pollution create permanent, irrevocably damaging water contaminations that potentially kill marine larvae and spread deadly diseases. In addition, the thick oil may stick to the bodies of marine organisms, hindering bodily functioning. Those worst affected by oil pollution are perhaps the sea birds, for the oil deprives them of flight. Also, various marine plants are rendered incapable of photosynthesis as the oil forms layers on them, its density being lesser than that of water. elixir of all life, from mammals to reptiles to even plants. Water thus proves key to keeping the food chain knotted. Maritime pollution, then, foils faults in a myriad species. Secondly, sediments, e-wastes and other like wastes are disposed off into water bodies, clouding their surfaces and preventing sunlight from reaching the plants below. These plants are then made incapable of photosynthesis. When heavy sediments lodge themselves onto the ocean bed, they can bury fish and other light-weight organisms underwater, coral reef, for instance. Gill-clogging in fish adds to the problem, wiping away a significant part of the food web. Again, fish sometimes mistake plastic or similar wastes to be food, and are inevitably choked to sudden death. Maritime Safety And Pollution for organisms like shell fish, later consumed by humans have the tendency to concentrate radioactivity in their bodies. Pesticides enter water via disposal, and are often consumed by water organisms, posing a special threat to humans that consume sea food. To summarize, maritime pollution clearly creates a web of suffering, trapping various marine organisms and inevitably humans as its prey. With marine accidents posing a dire and dreary definiteness, one cannot shield one’s eyes from the significant environmental consequences that potential oil and fuel spills can cause, either. Maritime safety, therefore, is paramount, imperative, irreplaceable. It is a deep global issue that necessitates transnational cooperation for effective address. About eighty percent of all goods are, after all, transported by sea, and we cannot wait for spills, spoils and slides to blow out blows into the lives we long for and the world we will to be our own. Architect Kate Orff suggests that phenomenally polluted rivers can be made wonderfully clean by using oysters which “slurp up pollution”. Finally, chemical or radioactive pollution makes its own presence felt as many discarded materials, disposed off by numerous nuclear submarines, can enter the food chain, -88- -89- Aishwarya Chawla 11-A Volcanic Ash In Iceland Volcanic Ash In Iceland Winner of The Science Essay Prize 2010 Our Earth has many natural resources like oceans, rivers, mountains, soil, etc. These natural resources are essential for our survival. However, sometimes these resources can cause calamities leading to massive destruction like tsunamis in oceans, flooding rivers, volcanoes from mountains, etc. I would like to focus on volcanoes and tell you more about their effect. Volcanoes are mountains which erupt letting out hot magma, ash and other such gases. They are generally found where tectonic plates are diverging or converging. They also take out lava and poisonous gases from the crater at its summit. There are many different types of volcanoes on Earth. Some of them are the Rio Grande Rift in North America and Pu'u O'o on a flank of Hawaii. In 2010, the volcano Eyjafjallajokull in Iceland erupted in March. This eruption was different from other volcanoes as it threw out a lot of ash and smoke particles along with lava. The volcano started erupting on 20th March and its first phase lasted up to 14th April. During this phase, the lava was flowing on the flanks of the mountain. The second phase occurred beneath the glacial ice from 14th April to 20th May. And then the third phase took place between 21st May and 23rd June. -90- Volcanic Ash In Iceland The whole world, especially Europe was impacted because of the volcanic ash. Several flights to and from Europe were either significantly delayed, rerouted or cancelled. The volcanic ash had spread widely over 250 million cubic meters. The temperature of rivers in the area rose from 60oC - 110oC to 500oC - 600oC. This effect also caused a lot of serious trouble for the farmers living next to the volcano in Southern Iceland. All farmers who kept their cattle and horses outside were advised to keep them inside the house. They were kept on evacuation alert during the ash fall. A thick layer of ash fell on some of the Icelandic farms. Whereas the lives of these farmers were in danger. The biggest inconvenience was caused to the millions of travellers worldwide as they were stranded at various airports in Europe. The ash forced all the flight operations in Europe to be suspended for several days. Many people could not reach important ceremonies and business meetings. Even some cricket teams were late in reaching West Indies for the T20 World Cup matches. All this affected many economies and industries – the biggest ones being the airlines and the tourism industry. In the end, I would like to stress that this natural phenomenon brought into focus the su- premacy of Nature over humans who, in spite of so many technological advances, have no control over the wrath of Nature. -91- Sanjari Kalantri 7-C Did you know that every year anywhere from 50 to 70 MAJOR volcanic eruptions take place. The BP Oil Spill The BP Oil Spill Winner Of The Science Essay Prize 2010 and it is believed that the kinks prevent an even worse gusher of oil from escaping. A geyser of oil and gas shot from the riser creating a giant plume of flame and black smoke. An oil spill is the release of liquid petroleum hydrocarbon into the environment due to human activity and is a form of pollution. The term usually refers to marine oil spills, where oil from tankers, offshore platforms, drilling rigs or wells is released into the ocean or coastal waters. Such oil spills may take months or even years to be cleaned up. A similar devastating situation occurred on Monday, April 26th 2010 in the Gulf of Mexico. The Transocean Deepwater Horizon was drilling a well when it exploded and sank, releasing huge quantities of oil. The oil spill is known to have leaked about 42,000 gallons a day from a well nearly a mile deep in the ocean. It is believed that the well is leaking its liquid from the riser which is a 5,000 feet long pipe extending from the wellhead on the ocean bottom that was connected to the drilling platform. Now detached, the riser is kinked like a garden hose. The leaks are at the sea floor These spills are a huge environmental disaster causing deaths of marine life and birds. The oil penetrates the structure of the plumage of the birds in the water, reducing its insulating ability and so, making the birds more vulnerable to fluctuations in temperature and also less buoyant in water. It also impairs the birds’ flight, abilities to forage and escape from predators. As they preen, the birds ingest the oil that covers their feathers, causing kidney damage, altered liver functions and even digestive tract irritation. This and the limited foraging ability quickly causes dehydration and metabolic imbalances. Most birds affected by an oil spill die unless there is a human intervention. Marine mammals exposed to oil spills are affected in similar ways as the sea birds. Oil coats the fur of sea otters and seals, reducing its insulating ability and leading to body temperature fluctuations. Ingestion of the oil causes dehydration and impaired digestion. As the oil floats on water, lesser sunlight penetrates the water, limiting photosynthesis of marine plants and phytoplankton. This as well as the decreasing populations of fauna, affects the food chain and the marine eco system. The government is taking various measures in response to the oil spill. They spent lots of money on robot subs and specially designed skimming vessels. We need to be very careful and alert and not -92- The BP Oil Spill allow such disrupting disasters to take place because not only do they harm the aquatic life but they also waste a very important resource ... Crude Oil (used for petrol, diesel, etc.). Utilizing the resources of the environment is our requirement and is something we all need to and should do. But, destroying these resources is not our right. So take care if all you have, and that will take care of you. NIkita Dhawan 7-B The Slick Crushers Microscopic Heroes to the Rescue A Marine Scientist’s dream is to be able to study the effects of a a massive oil spill resulting in severe environmental and economic damage but it isn’t a practical or a very good idea. But when more than 4 million bbl. of oil spilled into the Gulf of Mexico after the sinking of BP’s Deepwater Horizon rig last April, which mucked up coastlines and caused tens of billions of dollars’ worth of damage to the Gulf Coast economy, it also gave scientists an unprecedented chance to examine how a major man made disaster like this would effect the ocean as well as the inhabitants of it. They wanted to know what would happen to the methane and other chemicals released with the crude? Where would the oil go? While the world was debating the economic, social and environmental problems caused by the oil spill. The Gulf itself began working to clear up the oil spill. The vast majority of the oil and other hydrocarbons seem to be gone, less than six months after the crude stopped flowing. And the biggest heroes of the cleanup turned out to be not the thousands of workers who scoured oil from the beaches or the shrimpboat captains who turned their vessels into oil skimmers. They were actually the microscopic bacteria in the Gulf that digested much of the hydrocarbons while they were still deep under the surface. Bacteria’s that can eat or consume Oil are: 1. ALCANIVORAX BORKUMENSIS: Alcanivorax Borkumensis is a naturally occurring marine bacterium. It relies on oil hydrocarbons as its only source of energy, so much so that while it’s nearly undetectable in water -93- The Slick Crushers The Slick Crushers of normal conditions, when the water body becomes polluted by oil, Alcanivorax Borkumensis becomes ubiquitous. This is one of the many bacterias that helped to clean up the oil spill that was caused by man’s irresponsibility. 2. COLWELLIA (GENUS): This clan of oil-eating microbes can be found from cold Arctic and Antarctic waters to the balmy seas of the Gulf of Mexico. It also has the ability to thrive in a variety of habitats, from marine sediments to Arctic sea ice— making it one of the more adaptable spill fighters. Given that oil in sediments—or cold waters—is much harder to break down, scientists are in hot pursuit of this wide-ranging extremophiles’ spill-fighting traits. 3.CYCLOCLASTICUS: Some of the most dangerous constituents of an oil spill are polycyclic aromatic hydrocarbons—volatile molecules that can be highly toxic. Fortunately, at least 23 strains of the bacterial genus Cycloclasticus native to the Gulf of Mexico can degrade such nasty oil constituents by tapping them for energy. Even better, some members of the rod- shaped group can eat other aromatic hydrocarbons that are even more toxic, such as toluene. They even have tiny flagella to help them move from source to source, cleaning up toxics as they go. That is why scientists are busy decoding Cycloclasticus pugettii, a strain found in the waters of the Puget Sound and being dredged for here, in the hopes of improving its toxic avenger abilities. 4.OCEANOSPIRILLALES (ORDER): This order of microbes—part of the Proteobacteria phylum, named after the shapeshifting Greek god Proteus—assume a number of forms and roles in eliminating an oil spill. The most famous oil-eating member of the order is the aforementioned A. borkumensis, but other members can play a role in eliminating petroleum as well. Pictured here is the salt-loving Halomonas elongata, which grows best in extreme environments but does not eat oil. 5. OLEISPIRA (GENUS): Another alkane eater (like A. borkumensis), various Oleispira turn oil into more and more Oleispira cells, along with carbon dioxide and water. One unintended side effect can be local “dead zones,” as the industrious microbial 6.NEPTUNOMONAS (GENUS): Some members of this genus attack the carcinogenic constituents found in most oil deposits—the aforementioned polycyclic aromatic hydrocarbons—and can be found throughout the planet’s oceans. Members of the genus play a role not only in cleaning up oil spills— but also the fatty acid residue of whale carcasses, like Neptunomonas japonica pictured here. Other microbial genuses that contribute to such toxic tidying are Pseudomonas and Vibrio, although they may not be as abundant as Neptunomonas or Cycloclasticus. 7.THALASSOLITUUS OLEIVORANS: Much like A. borkumensis, T. oleivorans makes its living by turning the alkanes in oil into microbial cells, CO2 and water—and can be found from the Black Sea to the Gulf of Mexico, as can other members of the Thalassolituus genus. Unfortunately, such like minded bacterium don’t cooperate; experiments show that adding T. oleivorans reduces the activity of A. borkumensis and other oil-eating microbes as the tiny bacteria vie for oilingesting supremacy. Humans aren’t the only species waging chemical warfare in the Gulf. Junk Food I’ll tell you something about food Not eating your green veggies isn’t good! They give you a lot of nutrition All your proteins, vitamins and minerals. Drinking milk may not sound cool, But by not drinking it, you’d be a fool! And then you might get deformed bones, So milk is better than ice cream cones! consortia, like the one pictured here, consume much of the dissolved oxygen in the seawater as they feast on the oil. Another extremophile species in this genus has been found in Antarctic waters (Oleispira antarctica) as well as the subtropical waters into which the Macondo well has been spilling. -94- Don’t eat a lot of junk, For you will regret it later. You’ll say, “I should have listened to my mother!” And eaten a healthy diet instead. Maayashree Goel 5-B -95- Anahitaa Bakshi 12 C Harmful Soft Drinks Junk Food Junk Food I know what gives you a bad mood And that is School food! For me, it doesn’t taste good at all, But then, how will I be strong and tall? How will I have a healthy living, If I don’t get what that food is giving? I know you like all that junk food Because that’s what puts you in a good mood. I, too, love chocs But if I don’t use them, they become rocks! Junk food is anything that is sweet, It tastes like a birthday treat! If you avoid vitamin C You will have Scurvy, And then your teeth will be curvy. Prithvi Singh 5 During a two month long study, rats were allowed to gorge on foods rich in sugar and fat. It was observed that they put on weight, and also became “anxious” when this food was replaced. Overeating, caused decreased levels of a certain receptor in the brain and therefore a decreased responsiveness in brain circuitry. This in turn led to compulsive eating. Researchers conclude that eating junk food may have effects as severe as those of obesity and drug addiction . -96- Harmful Soft Drinks If you really know what the contents of soft drinks are, you would not think that it is ‘soft’. It is actually quite ‘hard’ on your health. Soft drinks have become so much a part of modern living, especially in urban areas globally. Soft drinks mainly appeal to the younger generation who drink them instead of water. Soft drink advertisements target young people who are oblivious to the harm these drinks can do to their bodies. No wonder people love drinking them. They give a refreshing feeling and seem to quench thirsts on an extremely hot day. But what do these soft drinks contain? CAFFEINE SUGAR Caffeine is an addictive drug that enhances the soda flavour. It artificially stimulates the nervous system and increases heart rate. When consumed it may temporarily arouse the intellect and diminish fatigue. Acids A majority of soft drinks contain large amounts of refined sugar. An average soft drink has up to 15 teaspoons of sugar in a 350 ml can! One can a day gives you more sugar than is necessary for your body. Sugar erodes teeth, increases your risk of diabetes, heart disease, indigestion and skin problems. Most soft drinks contain acids such as citrus, phosphoric, malic or tartaric acids. These acids are what give the soft drinks a refreshing sting and at the same time preserve the quality of sweetness of the drink. A study was done where extracted human teeth were placed in cola drinks. Within 2 days the teeth became very soft and the enamel lost most of its calcium. Indraneel Roy 9-B -97- The Menace In Sports The Menace In Sports Doping The Menace In Sports On 7th October 2010, an air of excitement filled the Jawaharlal Nehru Stadium as Nigerian athlete Oludamola Osayemi bags the gold in the women’s final 100meter race in the Commonwealth Games 2010 held at New Delhi. The euphoria was short lived… On 11th October 2010: The newspaper and television headlines ran, “Nigerian athlete Oludamola Osayemi has been stripped of her gold medal in the 100m after methylhexanamine was detected during drug testing. The 100m gold now goes to Australia's Sally Pearson.” Methylhexanamine like many others is a performance-enhancing drug used by athletes. The usage of these drugs is prohibited by the World Anti-Doping Agency. Blood Doping is another form of doping used by athletes. This is the practice of boosting the number of red blood cells in the bloodstream in order to enhance athletic performance. Because these cells contain haemoglobin that carry oxygen from the lungs to the muscles, more RBCs in the blood can improve an athlete’s aerobic capacity and endurance. Blood doping is most commonly used by endurance athletes, such as distance runners, skiers and cyclists. There are two methods by which blood doping is carried out. The first is a Homologous Transfusion in which red blood cells from a compatible donor are harvested, concentrated and then transfused into the athlete’s circulation prior to endurance competitions. The second is an Autologous Transfusion in which the athlete's own RBCs are harvested well in advance of the competition and then re-introduced before a critical event. Blood doping has its short lived benefits, however this comes at a very high price. According to various news reports on July 24, 2007. Tour de France rider, Alexander Vinokourov of the Astana Team, tested positive for two different blood cell populations and thus for Homologous Transfusion. A doping test is not considered to be positive until a second sample is tested to confirm the first. Vinokourov's B sample tested positive, and he faced a suspension of 2 years and a fine equal to one year's salary. Another example is that of the 19-year-old Russian hockey player Alexei Cherepanov who was engaged in blood doping for several months before he died on October 13, 2008, after collapsing on the bench during a game in Russia. -98- Athletes that fail the drug tests are not only stripped of their accolades but bring shame to themselves and their county. The physical and medical side effects of blood doping may only appear later on and not at the time of transfusion.The increased number of red blood cells leads to increased blood viscosity. Our body is unable to pump such thick blood and thus leads to numerous complications. These include Myocardial Infraction(heart attack), Pulmonary Embolism( this is the blockage of the pulmonary artery), Cerebral Ebolism( the blockage of an artery), Cerebrovascular Accident(stroke) and other infections. Homologous Transfusions are prone to further effects such as allergic reactions and risk of bloodborne diseases such as hepatitis C,B and HIV. Although blood doping may provide positive results in the short term, it only leads to ruin in the long run. I hope this article reinforces the unfortunate truth of this statement. Navia Dayal 11-B The earliest known record of use of drugs in sports was in England in 1807 to win an endurance race - what is now called a marathon. -99- ESP : The Sixth Sense Extra Sensory Perception The Sixth Sense Have you wondered if there is a sense, a sixth sense, which we often casually call ‘instinct’ or gut feeling? This question has been pondered over through the centuries and has baffled even the best scientists and psychologists. So is there some unknown external force, some extra sensory power of the mind that enables humans and animals alike to subconsciously react to certain situations in ways that cannot be explained by science? Extra Sensory Perception or ESP is defined as the acquisition by a human or animal mind of information. It could not have been received by normal, sensory means. The term was first used by Sir Richard Burton, and later adopted by Duke University psychologist, JB Rhine. The study of ESP and such mental phenomena is called parapsychology. Science is largely based on evidences, proof and testable experiments that give rise to knowledge and information. ESP however contradicts the basic limitations of science, and has been rejected due to lack of evidence and results. Instances of Extra Sensory Perception are often subconsciously felt, but rarely noticed. For example, various fish, sharks and sea creatures often rely on their instinct and apparent sixth sense while hunting. Scientists often explain this as electroception, the ability of certain creatures to sense electric and even magnetic fields, which are used for communication and hunting. But apart from this known ability of extraordinary creatures, is it not possible that all living beings possess some unique power that they themselves do not know? This doesn’t invariably mean that this so called ‘sixth sense’ will always be correct, or that reactions on the basis of this perception will prove helpful, it only means that there may be a spontaneous psychological drive, a ‘sixth sense’ that is responsible for human behavior and psychic responses. This sixth sense is external to the five known The Sixth Sense Have you ever felt that you have a sixth sense? Vani Shriya- About some things sometimes, but not enough to consider it something extra ordinary - just random gut feelings Madhav Vohra- Weird feelings which turn out to be correct. Amira Singh - Definitely felt déjà vu human senses, and till date has not been thoroughly proved, explained and experimented, and is hence not completely recognized in the scientific world. Science is nothing but new discovery and research. But isn’t possible that science does NOT have the solution or the answer to this bizarre question? Well, maybe it is best to leave this question unanswered and for once let this apparent force of nature be undisturbed and forever undiscovered. -100- Anjani Gupta 10-A -101- Did You Know Multiple Intelligences Multiple Intelligences Here are some of sciene’s many unknown and humorous facts … Aside from man pigs are the only mammals that can get sunburns. In 1983 a psychologist, Howard Gardner came up with the theory of multiple intelligences. If we accept that intelligence is the ability to adapt to our various circumstances then we can easily understand Gardner’s theory, of multiple intelligences. Till Howard Gardner came up with his theory it was widely believed that intelligence is that which can be measured from scholastic/academic performances. Anyone else smell bacon? Crocodiles are colour-blind. The Dead Sea is so salty it is impossible to sink in it. If you’re stuck behind one at a traffic light you know why. Good luck scuba diving… Romans cured toothaches by tying toads to their jaws. And you think your dentist is bad… If the sea level continues to rise at its current rate the Eifel tower will be completely submerged in 200 years. A racing pigeon can fly up to the speed of 117kmph Haven’t been there? You’d better hurry One day on Jupiter lasts only nine hours and fifty minutes. It’s a plane… Its superman…nope it’s just a bird… And you feel that you don’t have enough time. Ashrant Kohli 9B+ -102- The theory that Gardner proposed included six of the following intelligences: • Spatial • Linguistic • Logical-mathematical • Kinaesthetic • Musical • Personal words, reading, writing and memorizing dates. Such people learn best by reading, taking notes or listening to lectures. They have high verbal memory and careers of writers, philosophers and lawyers suit them. 3. Logical-Mathematical: People with this intelligence have great reasoning capabilities and logical thinking. Such people are good with numbers, have abstract patterns of recognition and can perform complex calculations. Careers of mathematicians, logicians and engineers suit people with these skills. 4. Kinaesthetic: Bodily Kinaesthetic intelligence involves having the ability to control one’s body motions and skilfully handle objects. It also includes having a good sense of timing along with the ability to train responses to work like reflexes. It is said that people with high Bodily Kinaesthetic intelligence learn better by muscular movement and are said to be good at sports and dance. Careers suiting people with this intelligence are of athletes, builders, soldiers and so on. 1. Spatial: This intelligence deals with the ability to judge the space in your surroundings using your mind’s eye. Good designers and architects possess this intelligence as their job requires them to be able to visualize and design structures mentally. 2. Linguistic: People with high verbal or linguistic intelligence are very good with -103- Multiple Intelligences 5. Musical: This intelligence has to do with sensitivity to sound, rhythm and music. People with high musical intelligence can usually sing well, play musical instruments and compose music. Since such people have a good ear most of them learn best through lectures. Careers suiting people with this intelligence are those of musicians, poets and composers. 6. Personal: This intelligence is of two types, interpersonal and intrapersonal. In- fectively and thereby assist them in making a career choice most suited to their skills. Howard Gardner has also identified the types of abilities that would be required in the future. He calls it Five minds of the Future: The Disciplinary Mind: the mastery of major schools of thought, including science, mathematics, and history, and of at least one professional craft. The Synthesizing Mind: the ability to integrate ideas from different disciplines or spheres terpersonal intelligence refers to an individual’s ability to in- The year 2011 was declared the International Year of Forests by the United Nations . into a coherent whole and to communicate that integration to others. The Creating Mind: the capacity to uncover and clarify teract with others and interpret their feelings through subtle signs from body language, expression and tone of They hope to raise awareness and strengthen sustainable forest management and development and conservation of all types of forests for the benefit of current and future generations. new problems, questions and phenomena. voice. People possessing this intelligence communicate and cooperate well with others, thus making them both good The Respectful Mind: awareness of and appreciation for differences among human beings and human groups. The Ethical Mind: fulfilment of one's responsibilities as a worker leaders and followers. Such people learn best through discussions with others and jobs of managers or teachers suit them. Intrapersonal intelligence involves an individual’s understanding of his own-self. People with this intelligence have intuitive skills, are aware of their strengths and weaknesses and are able to predict their reactions. Careers suiting people with this intelligence are those of philosophers, psychologists and so on. Today there are psychological tests that can help determine an individual’s special area of intelligence ef- and as a citizen. While these theories provide fascinating insights to the way in which we understand and perceive ourselves they also perform many useful functions: they tell us that the traditional methods of defining IQ [intelligence quotient] no longer hold good in a diverse and multicultural global village and that we need a different yardstick by which we can identify and recognise the vast abilities that we as humans possess. Shreyas Kadaba 9B+ -104- I N T E R N A T I O N A L Y E A R Forests are an integral part of global sustainable development. The World Bank estimates that more than 1.6 billion people depend on forests for their livelihoods. O F The forest product industry is a source of economic growth and employment, with global forest products traded internationally in the order of $270 billion. -105- F O R E S T S Survival Of The Tiger Survival Of The Tiger Strategies for the survival of the tiger and its habitat Tiger, Tiger burning bright Dreadful is your present plight Tiger, tiger, bright as flame Your extinction would be our shame Less than 3200 tigers left in the world. Less than 1400 in India. It’s no longer about words, but about the life of my national animal. And I’m not just going to sit and watch, while the numbers deteriorate. Poachers ruthless and always set To kill the world’s pride? You bet Alive, some admirers it may please But dead, it’s worth lakhs of rupees With humans thriving all over the world It’s home is converted, restricted and furled Deforestation and degradation too Kills it’s habitat as remain only a few… Strategies to save the tiger and its habitat, hence include: 1. Firstly, Environment service payments should be more widely introduced. They encourage changes in the land use practices such as reforestation and retention of landscape, by providing incentives. It could include a scheme as simple as a conservation contract among communities living in or around a tiger reserve, with payments linked directly to the focal species. 2. Developing Ecotourism: India, with its former hold of tigers has the largest tiger tourism industry in the world. More than 1.29 million tourists visit tiger reserves annually. The average Indian reserve receives 60,000 tourists per year but collects little in revenues, largely due to low entry fees. Hotels in these areas contribute little to tiger conservation. In contrast, Nepal has developed a communitybased tourism model, emphasizing on sharing benefits with locals and on the regeneration of degraded forests. The approach has been successful in reducing poaching, restoring habitats, and creating a local constituency for conservation. 3. The government with scientists should identify and monitor key tiger population areas where immediate techniques have to be introduced. A tiger’s habitat includes a large region, 1000 km away from human activity, with a vegetative cover, prey and sufficient water. Moreover, specialists should advance research on tiger behavior and ecology for long term solutions. 4. Strict, on-the-ground protection is essential to protect tigers from poachers seeking tiger parts for the lucrative market in traditional Chinese medicine. Officers, forest guards and staff need to be hired, funded, trained and legally empowered to protect the tiger from illegal hunters, day and night. -106- 5. Why be dependent on the government? Community based sustainable development programs would be an initiative on the personal level. And it’s about time we do something on our own. Those communities whose livelihood depends solely on the use of forests where tigers live, with the help of institutions, NGOs and banks should contribute to tiger conservation. 6. Spreading awareness in the masses about the conservation will always help to get ideas, resources and helping hands in the process. So ecologically sensitive development combined with educational conservation programs should inform the people, empower the indigenous and inspire locals to participate in the protection of the tiger. Consumers across the globe should also be educated about Chinese medicinal products and their origin. 7. If the numbers decrease as drastically as they are, the genetic material wouldn’t be enough to breed tigers, and that is what will lead to extinction. Zoos hence, ensure against such a threat, which could affect small tiger populations in the fragmented reserves. As far as long term plans are concerned, the government along with Officials at sanctuaries, national parks, Customs officers and traders need to be trained and informed about closing markets for tiger parts and products. Targeting the consumer would mean no demand and hence, poaching for this purpose should decrease. At the same time, as the World bank has issued, privately owned tiger farms need to be shut down immediately as they promote inhumane acts and trading of tiger parts. Some feel that tiger farms are the solution to prevent poaching in the wild and at the same time, meet the demands of trade. However, such production of Chinese medicines needs to be stemmed without doubt as its completely ridiculous. Moreover, keeping tiger farms will prove the ban on selling tiger parts ineffective and not contribute to the conservation of the tiger, to say the least. Instead, such tiger farms should be converted to sanctuaries or parks for small populations of tigers with strict officials and forest guards to prevent killing and promote protection. In conclusion, all these strategies may have been thought of by many others, perhaps hundreds. But what is different this time is that it’s truly the last chance to save the tiger. If numbers decrease consistently it will be extinct within 2 decades. Perhaps, holding summits and protests, signing petitions and making posters wouldn’t magically heal these wounds (as opposed to what Chinese citizens think of their medicines made of tiger products ironically). But it may just make 6,893,800,000 people aware of the loss they are about to suffer. What we need is another Project Tiger to boom the numbers, what we need is trained forest officials in secure protected sanctuaries, what we need is ruthless poachers behind bars, what we need is the majesty and grace of the king of the jungle. He deserves to be here and the future deserves to witness him. Save the tiger. -107- Vandita Khanna 10-B My gadget is very simple. Attach it to your cotton jacket in winter and it will keep you warm. You dont have to wear layers of warm clothes. In the summer it will keep you cool. It adjusts itself to the climate when you press the buttons on it. It is also a compass and helps in navigation.It can also be a reminder. Just press the remider button and it will beep when required. A small gadget many advantages -108Diya Narag -109- Will The World End In Fire Or Ice Will The World End In Fire Or Ice Will the world end in fire or ice? Earth’s crust. When it seemed all hope should be lost, the volcanoes erupted, spewing hot magma and the carbon dioxide that had been absorbed by the Earth’s crust. The Earth began to become warm again. As the Earth became warmer, life began to flourish and more carbon To understand how the world will end, first we must understand how it began; when I say, “the world will end” I don’t mean the planet will be destroyed, just the life forms on it. The world has been following a cycle for millions of years, and it will continue to do so even after we are extinct. Soon after the Earth was created, life began to flourish and eventually the world was covered in forests. Forests which absorbed carbon dioxide. The oceans where filled with plankton; microscopic creatures which also absorb carbon dioxide. With all this carbon dioxide being absorbed, the amount of heat being trapped in the atmosphere became less and less. Over millions of years, Ice began to develop at the poles; Ice which reflected some the sun’s light causing the world to become even colder, causing even more Ice to form. It was the beginning of the first Ice Age. All the while, dead, carbon dioxide rich plankton had been absorbed from the ocean floor and stored in the dioxide was released so the ice began to melt. As the ice began to melt, less sun light was reflected and the Earth became even warmer. A chain reaction had once again begun, but in the opposite direction. This cycle has been going on since the Earth was created. The Mayan sun calender which is the main reason for the end of the world theories works on a system of having days in groups of 10. The calender so far has been accurate in predicting every solar and lunar eclipse we’ve seen and the calender ends on the 21st of December 2012. The most commonly accepted theories for why the world should end in 2012 are - -110- Super Volcanos Magnetic Fluctuation We all know the Earth is surrounded by a magnetic field that shields us from most of the sun’s radiation. What you might not know is that the magnetic poles we call north and south have a nasty habit of swapping places every 750,000 years and right now we’re about 30,000 years overdue. Scientists have noted that the poles are drifting apart roughly 20-30 kilometres each year, much faster than ever before, which points to a pole-shift being right around the corner. While the pole shift is under way, the magnetic field is disrupted and will eventually disappear, sometimes for up to 100 years. The result is enough UV outdoors to crisp your skin in seconds, killing everything it touches. Yellowstone National Park in United States is famous for its thermal springs and old faithful geyser. The reason for this is simple, it’s sitting on top of the world’s biggest volcano and geological experts are beginning to get nervous sweats. The Yellowstone volcano has a pattern of erupting every 650,000 years or so, and we’re many years overdue for an explosion that will fill the atmosphere with ash, blocking the sun and plunging the earth into a frozen winter that could last up to 15,000 years. The pressure under the Yellowstone is building steadily, and geologists have set 2012 as a likely date for the big bang. Meteor Hit Thousands of small meteors hit the Earth every day, however most of them are so small in size that we wouldnt notice them even if they hit us in our face. hHowever the impact of a 22km large metoer is said to have caused the extension of the dinosaurd to be the cause of the extintion of the dinosaurs. a large enough meteor hit would cause significantly large earthquakes and tidal waves and would throw up enough dust into the atmosphere to block out the sun. -111- Will The World End In Fire Or Ice Solar Activity Solar experts from around the world monitoring the sun have made a startling discovery. Our sun is in a bit of strife. The energy output of the sun is, like most things in nature, cyclic and it’s supposed to be in the middle of a period of relative stability. However, recent solar storms have been bombarding the earth with lot of radiation energy. It’s been knocking out power grids and destroying satellites. This activity is predicted to get worse and calculations suggest it’ll reach its deadly peak sometime in 2012. Do You Think The World Will End In 2012? Vani Shriya - No. The Mayans couldn't see life continuing on after 2012 but there's no real actual scientific basis in the theory that we'll all die December 21st 2012 Shiksha Kamra - I don't believe in roman mythology and hence don't think the world will end in 2012. Sarthak Grover - Because I loved the movie and I think it’ll end exactly like that Scientific Calamity Though unlikely a major scientific mishap such as a black hole being formed by the LHC (scheduled to be completed in late 2012) or malfunctioning or atomic goods could cause large parts of Earths mass to be annihilated causing the Earth to spiral into the sun leading some to call such devices “Doomsday Weapons”. Osho Singh - At least not the whole world Madhav Vohra - A lot of stuff has to happen before the world ends Shift in the Earths Tectonic Plates As shown in the movie “2012” a large enough shift in the Earths’ tectonic plates would cause a rearrangement of both land and water bodies causing Tsunamis and earthquakes on a scale that would level all the major cities and cause a shift in the Earths’ magnetic field, most likely rendering and electronic devices useless. Will the world end in 2012? Amar Dhingra and Dhruv Singh Note: All theses are still theories and none are, as of yet, based on concrete evidence. -112- -113- I shouldn’t be HANGED! A judge tells a condemned prisoner that he will be hanged at noon on one weekday in the following week but that the execution will be a surprise to the prisoner. He will not know the day of the hanging until the executioner knocks on his cell door at noon that day. Having reflected on his sentence, the prisoner draws the conclusion that he will escape from the hanging. His reasoning is in several parts. He begins by concluding that the "surprise hanging" can't be on a Friday, as if he hasn't been hanged by Thursday, there is only one day left - and so it won't be a surprise if he's hanged on a Friday. Since the judge's sentence stipulated that the hanging would be a surprise to him, he concludes it cannot occur on Friday. He then reasons that the surprise hanging cannot be on Thursday either, because Friday has already been eliminated and if he hasn't been hanged by Wednesday night, the hanging must occur on Thursday, making a Thursday hanging not a surprise either. By similar reasoning he concludes that the hanging can also not occur on Wednesday, Tuesday or Monday. Joyfully he retires to his cell confident that the hanging will not occur at all. The next week, the executioner knocks on the prisoner's door at noon on Wednesday — which, despite all the above, will still be an utter surprise to him. Everything the judge said has come true. -114- -115- Science Magazine Editorial Board Giant Meteor Hit Super Volcano Eruption Shift in Tectonic Plates The World Will Never End Melting of Polar Caps Massive Solar Storm Pole Shift/Magnetic Disruption Scientific Calamity How will the world end? Shivanshu Dev- Shortage of Resources Roshni Sondhi- All Sarah Mirza- Nuclear Bomb Priyanka Vashisth- Human Ignorance Sumer Kohli- Alien attack (they‘ll come and eat us all up) Jaya Mehta- Machines will take over the world and the human race -116- 2011 -117- We are the Future Science is Our Paintbrush The World is Our Canvas -118- -119-