Physics in Canada
Transcription
Physics in Canada
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AFFAIRS: THE 1 9 6 3 CONGRESS 21 NEWS 31 CANADIAN PHYSICISTS 35 DR. GEORGE NEILSON WHYTE 41 LETTERS TO THE EDITOR 43 BOOKS 45 EDITOR: A. Vallance Jones, EDITORIAL BOARD: A. Kavadas, J. D . King, T. P. Pepper, G . G . Shepherd, R. Skinner. EDITORIAL ADDRESS: Dept. of Physics, University of Saskatchewan, Saskatoon, Sask. ADVERTISING AND SUBSCRIPTIONS: University of Toronto Press, Front Campus, Toronto. PUBLISHED FOR THE ASSOCIATION BY THE UNIVERSITY OF TORONTO PRESS AUTHORIZED AS SECOND CLASS MAIL BY THE POST OFFICE DEPARTMENT, OTTAWA, AND FOR PAYMENT OF POSTAGE IN CASH SECTION SOLID HEAD STATE PHYSICS for the D E F E N C E RESEARCH TELECOMMUNICATIONS ESTABLISHMENT D E F E N C E RESEARCH BOARD, O T T A W A , ONTARIO The DRTE solid state research program is flexible, but has centred on fundamental electrical and optical effects in elemental semi-conductors or semi-insulating compounds. 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APIONICS 8 2 3 0 M a y r a n d St. 4 9 3 8 Yonge St. • • Montreal 9 Willowdale limited • Quebec • Ontario • REgent 9-5517 • 222-3261 The Eighth Medal for Achievement in Physics, 1963 GARNET ALEXANDER WOONTON, B.A., M.A., D.SC. (Citation read by the President, Prof. G. M. Volkoff) was born in London, Ontario. There, also, he received his early education, leading to a B.A. degree from the University of Western Ontario in Commercial Economics in 1925. He was then associated with the Bell Telephone Company at Montreal for a few years, only to recognize that his real interests lay in science rather than in business. The switch to advanced studies in Physics and Mathematics was accomplished smoothly and quickly—he was awarded an M.A. in Physics from Western in 1931. This was itself a major achievement and indicated at this early stage in his career one of the great attributes he has shown ever since: his ability to teach himself large bodies of fact, laboratory skills, and mathematical techniques, quickly, surely and independently. Following the M.A. degree, there was no opportunity for Woonton to continue his formal education, nor was there any real need: by then he had probably learnt all that professors can teach. Thus when in 1955, Western accorded him a D.Sc. degree, they conferred on him honoris causa, an accolade for which in fact his own labours had qualified him some two decades before. In the thirties, still at the University of Western Ontario, Woonton held a joint appointment. As Research Fellow in Physiology he was concerned with bio-physical problems of the cerebral cortex; as Demonstrator in Physics he did research in electron diffraction. With the advent of the war in 1939, he became a full-time member of the Department of Physics and joined the team working with the National Research Council on the development of radar. With this research commitment, he combined a full teaching program, and it is his proud claim to have at one time or another taught every field of physics. Clearly recognized for his versatility in all academic activities and in war research, he now rapidly advanced through the academic hierarchy, being elected Research Professor in 1946. GARNET ALEXANDER WOONTON 6 PHYSICS IN CANADA Near the end of this period he became more and more concerned with the fundamental aspects of electromagnetic radiation, which led him to important work in microwave optics, notably to studies of the interaction of electrons in long electron beams and associated noise problems. He attracted a number of outstanding M.Sc. students, many of whom were eager to continue towards a Ph.D. with him. When he was appointed Professor of Physics at McGill University in 1948 he brought some of them with him so that in no time he established at McGill an important group involved in many aspects of microwave electronics. Some of the students of this period were John and Marion Chapman, Peter Forsyth, George Bekefi, Don Hay, Eric Vogan, George Harrower, Hugh Hamilton, David Hogg and George McCormick, many of whom have already had considerable impact on physics in Canada. Professor David Keys, who had resigned from McGill to go to Chalk River, had laid the groundwork for the establishment of the Eaton Electronics Laboratory. Professor Woonton now saw to its realization, becoming its Director in 1950. The first problems attacked in his new laboratory were problems of microwave optics. Diffraction by apertures and obstacles, lens design and aberrations, ionospheric scattering, are topics representative of the preoccupations of this period. Indicative too of Woonton's interests then were his contributions to the design of the Mid-Canada Line and his active participation in 1954 and 1955 in Project Lamp Light at the Lincoln Laboratory of M.I.T. But gradually, since the mid-fifties, problems involving the physics of crystals, of work functions, of paramagnetic resonance and of masers, start to predominate in the work of the Eaton Laboratory. The flow of outstanding students has not ebbed, and the number of Ph.D.s from the laboratory—supervised by Woonton and two or three close associates— is now thirty.* But beside the students, Woonton has maintained a considerable personal involvement in research, which has come to be centred on quantum electronics, and includes fundamental problems in the interactions between spin systems of paramagnetic ions and the vibrations of the crystal lattice, and in a group of phenomena mostly associated with the magnetic properties of solids. Since 1954 Woonton has served McGill as Chairman of the Physics Department in what has turned out to be a period of innovations: radical modernizations of the honours and general curricula, and a considerable and continuing growth of the Department. Le Professeur Woonton est sans contredit l'une des personnalités les *A partial list of these who may now be quite widely known in Canada would include: A. Mungall, M. P. Bachynsky, I. Shkarofsky, G. W. Farnell, R. A. Armstrong, G. C. Cloutier and B. A. Mcintosh. EIGHTH MEDAL FOR ACHIEVEMENT IN PHYSICS 7 plus marquantes de la physique canadienne. Il a servi celle-ci, nous l'avons vu, par ses travaux de recherche, mais aussi en travaillant activement dans de nombreuses sociétés, tant nationales qu'internationales. En particulier, il fut Président de notre Association en 1948-49, et sa réputation grandissante valut prestige et respect à notre organisation encore jeune et suspecte en certains milieux. Il fait partie de divers comités de l'Office des Recherches pour la Défense depuis 1955, et il est éditeur associé du Journal Canadien de Physique depuis 1957. Sur le plan international, il fut Président de la Commission VII de l'Union Radio Scientifique Internationale de 1952 à 1957, et il est depuis ce temps Vice-Président de cette même Union. Il est également l'un des directeurs de l'Institute of Electrical and Electronics Engineers auquel il s'intéresse depuis de nombreuses années. Ce qui surprend peut-être le plus chez lui est l'énergie énorme qu'il sait déployer dans tout ce qu'il entreprend, par exemple pour maîtriser un nouveau secteur de la Physique. Dans d'autres domaines on l'a vu apprendre à piloter un avion, ce qui l'obligea à quelque chose de peu facile: diminuer sa masse par un facteur de l'ordre de 1.2. C'est cette même énergie qui se manifeste maintenant dans son ardeur à apprendre la langue française. Fort heureusement, il rie se permet pas d'exiger autant de ses semblables que de lui-même; c'est pourquoi il peut allier deux qualités qui ne vont pas toujours de pair: une activité débordante et une cordialité à toute épreuve. This interest in French is not something recent; for all his southwestern Ontario background, both early and later in his career, Woonton has been drawn strongly toward Quebec. At McGill he has long established a record of affection for, and deep interest in, things French. It may be idle to speculate whether this derives from a forebear who bore arms on Ile Ste. Hélène to defend Montreal against invasion in 1812, or from others in the Channel Islands with names like LeBreton or Aubin. But with his characteristic tenacity—with which at an earlier age he mastered mathematics—he has now mastered French: not perhaps all the polite conversational gambits, but finesses of grammar and etymology to confound many an expert. In this turbulent era in Quebec, it may not be too much to say that among English-speaking Canadians it is precisely men like Gar Woonton who are needed in all walks of life to help preserve the amity and unity of the Nation. Ladies and Gentlemen—I present to you Garnet Alexander Woonton, a noted lecturer and devoted teacher, a versatile contributor to several fields of physics and a servant of the cause of physics—in administration, in the Canadian Association of Physicists and internationally—and last though not least a delightful human being and advocate of biculturisme\ 8 PHYSICS IN CANADA and in the name of us all I award him the 8th medal of our Association for achievement in physics. Mesdames et messieurs, j'ai l'honneur de conférer la médaille de l'Association Canadienne des Physiciens au professeur Garnet Alexander Woonton. PROFESSOR W O O N T O N ' S R E P L Y Mr. President: I would like to thank you, and through you the Canadian Association of Physicists for choosing me as the eighth recipient of the Medal for Achievement in Physics. I think that it is apparent to all of us, that no one ever achieves anything by himself: there is always behind a University Professor and his work a host of other professors, colleagues and above all students who have contributed to whatever he has done. Nor do I want to stop with the scientific part of our lives; there are always families and there are wives who put up with physicists, look after them and who see that they are not too much interrupted by the daily tasks of living. This is our common knowledge and knowing that you understand this I very gratefully accept this honour which you have done me. J'ose m'exprimer ici en français, parce que mes collègues de langue française sont plus que bilingues. Ils ont montré leur aptitude en linguistiques non pas seulement en sachant le français et l'anglais mais aussi en apprenant à nous comprendre lorsque nous parlons français. Je ne crois pas, toutefois, importuner mes collègues de langue anglaise; mon accent est tel qu'ils ne sauront pas que je ne m'adresse pas à eux en anglais. If there are any advantages to being eighteen years older than I was when C.A.P. was founded, one of them is that I can tell many of you what happened before you began to take an interest in Physics. Il y a dix-huit ans, le physicien était un être inconnu au public canadien; les ingénieurs et les chimistes étaient en demande, non les physiciens. Durant ces années les physiciens commencèrent a découvrir leur importance dans un univers plus grand que leur laboratoire. Le Radar et la bombe atomique encore inconnus du public étaient le résultat de recherches conduites par des physiciens. Eighteen years ago, nearly all of the physicists of Canada were concentrated in either Ottawa or Toronto. In Toronto, a crown company had been established, Research Enterprises Limited. Je voudrais vous entretenir de deux jeunes membres le l'exécutif de cette compagnie. Ni l'un ni l'autre n'étaient des physiciens dans le sens qu'ils imposèrent à la profession dans la charte de l'A.C.P. Fred Coombs terminait un cours en physique à l'Université de Toronto quand il entra dans la R.E.L. et • EIGHTH MEDAL FOR ACHIEVEMENT IN PHYSICS 9 J. J. Brown, un Canadien, venait de terminer un Ph.D. en littérature anglaise, à l'Université Yale. Coombs rêvait d'une reconnaissance professionelle du genre de celle accordée aux ingénieurs; Brown proclamait que le progrès suit l'action et non les plaintes. Ensembles, à l'heure du dîner (aux sandwiches non au vin) ils donnèrent naissance à l'Association Canadienne des Physiciens Professionels. My close association with C.A.P.P. began in the summer of 1945 when at the invitation of the founders I became Vice-President first under F. E. Coombs as president, then under the late J. O. Wilhelm. The other members of the executive were N. J. Abbot, L. H. Turl, A. D. Misener and Peter Sandiford. J. J. Brown and others were directors. Durant l'hiver de 1945-46, la jeune organisation traversa de durs moments. Si vous vous rappelez les procès d'espions canadiens, vous vous souviendrez que les mots "communisme" et "anti-communisme" flottaient dans l'air. D arriva qu'une autre organisation, à tendance communiste prenait naissance avec les initiales suffisament semblables à celles de l'A.C.P.P. pour semer la confusion. Les physiciens non fixés quant aux intentions de l'A.C.P.P. nous traitèrent souvent commes des personnes atteintes de la peste. Il y avait, cependant, dans nos rangs des hommes pleins de courage et d'idées. L'exemplaire numéro 1 du volume II du Bulletin de l'A.C.P.P. daté de février 1946 est une preuve de cette avance, car il contient une liste imposante des membres fondateurs. Laval peut être fier que la liste contienne les noms de H. F. Feeney, H. P. Koenig, F. Bonenfant, A. Boivin, C. Geoffrion, G. Hall aussi que de sept membres étudiants. II est bon de mentionner qu'il y avait dans cette liste plus de membres étudiants de Laval, que de toutes les autres Universités Canadiennes combinées. The first Congress of the Canadian Association of Professional Physicists was held at the end of May 1946 at the McLennan Physics Laboratory, the University of Toronto. Je ne saurais m'empêcher de mentionner deux événements cocasses relatifs à ce Congrès. Le premier se passa dans les coulisses. Nous avions dépensé quarante piastres (que nous n'avions pas d'ailleurs) pour annoncer le congrès dans les journaux de Toronto. Ce n'est que plus tard que nous réalisions que dans les annonces l'endroit où le congrès devait avoir lieu n'était pas mentionné. Le second événement était plus à la vue du public. Un des principaux conférenciers dont la conférence avait été annoncée comme un événement extraordinaire, était un éminent: physicien. Il oublia de venir à la reunion. Que sont devenus nos pères fondateurs? F. E. Coombs lança la compagnie Air Line Transport et acheta ensuite la compagnie le Taxi 10 PHYSICS IN CANADA Murray Hill. Il s'est maintenant retiré du monde des affaires pour profiter des fruits de ses entreprises. Dr. J. J. Brown remporta beaucoup de succès en combinant une vie d'homme d'affaire et d'étudiant. Ses nombreuses compagnies lui accordent le support nécessaire alors qu'il lance sa nouvelle aventure, cette fois complètement académique, c'est "The Institute for Entrepreneurial Research". Last week, at the same time that I was thinking about the founding of C.A.P., I was also preparing a report for McGill University on the future plans of the Ph.D.s and M.Sc.s in Physics who have just received degrees. Far too many of them are taking positions outside of this country. This led me to further speculation concerning the number of B.Sc.s in physics who continue on for graduate work; the best of them can, and very often do receive very generous awards from graduate schools outside of Canada and these awards are quite often on a scale with which we cannot compete. It is difficult to say anything new on this subject; in fact, was it not at the 1950 Congress in Montreal that C.A.P. conducted a seminar on this and related topics? I can say, however, that it seems to me that this situation is no better than it was thirteen or fourteen years ago and it may be worse. Has not the time come to find another Brown who will spark another Coombs? The Departments of Physics in the Canadian Universities appear to be engaged in a programme of developing the overdeveloped countries. Let us put it this way: the average Ph.D. attends university for not less than seven years and each of those years costs somebody not less than $2,000. Each time a new graduate takes a position across the border, we make the United States a present of $14,000. How much return the United States earns on this investment is anybody's guess but if you count the Canadian physicists in positions of responsibility in the United States, you can arrive at some kind of estimate. Even the President has at least one ex-Canadian as an adviser on atomic energy. I must not pose as an authority nor do I want to talk too long. Let me say only that in the history of C.A.P. two young men with an idea succeeded in founding an enduring and important organization in the face of rather long odds. Again in the face of long odds are there young men who can solve this problem? M. le Président, je vous remercie encore de l'honneur que vous m'avez fait. Je vous remercie tous de votre attention bienveillante. Some Non-technical Aspects of Science* G. M. VOLKOFF E N RÉFLÉCHISSANT au sujet de cette allocution j'ai fait ce qu'un physi- cien fait très souvent au début d'un nouveau sujet de recherches: j'ai examiné la littérature du sujet. Dans mon cas la littérature du sujet se réduit tout simplement à notre journal officiel Physique au Canada. Je voulais relire ce que mes prédécesseurs ont dit dans de mêmes circonstances. En examinant des allocutions de neuf présidents de notre association publiées jusqu'ici (je ne trouve aucune mention de ce que les huit premiers présidents ont dit) j'ai constaté que MM. Herzberg, Hay, Elliott, Duckworth et Pounder avaient choisi des sujets étroitement liés à leurs contributions personnelles à notre science si étendue et si fascinante, tandis que MM. Shrum, Kerwin, Sargent et Currie ont préféré des sujets de nature plus générale. Ainsi la tradition ne pouvant me servir de guide j'ai été forcé à faire mon choix indépendamment. Un tel résultat de l'examen de la littérature n'a, bien entendu, rien de surprenant. Within the last few years I have already spoken under C.A.P. auspices at a number of centres across Canada on that small corner of physics— the radio frequency spectra of nuclei in crystals—to which my graduate students and I have made some personal contributions. Therefore, I have decided not to subject you today to a recapitulation of the same story, particularly since I have no new exciting chapters to add. Instead, I wish to speak to you on a more general topic—some lessons taught to us by science which have wider implications. For an audience of physicists I do not have to describe the personal involvement and satisfactions that the pursuit of science holds for the individual. Neither is it necessary for me to discuss the social significance of science as the basis of technology. This aspect of science is so obvious that it is often held to be the main, if not the sole, influence of science on our civilization. I wish to discuss today some non-technological social aspects of science which also have a profound bearing on our culture. The following remarks are based largely on two excellent essays *A condensation of the C.A.P. Presidential address delivered at the C.A.P. Annual Meeting at Laval University on June 7, 1963. 12 PHYSICS IN CANADA which I happened to come across in recent months: "Science and Human Values" by J. Bronowski,1 and "The Republic of Science" by M. Polanyi.2 I have derived much pleasure and profit from reading these two articles, and I shall consider my talk today as having attained its objective if it leads some of you to read these two essays in detail for yourselves. First, I want to put before you Bronowski's contention that, contrary to a widely held belief, the pursuit of science is far from being a neutral or a mechanical activity unrelated to the problem of values. He finds that "like the other creative activities which grew from the Renaissance, science has humanized our values. Men have asked for freedom, justice and respect precisely as the scientific spirit has spread among them." I then want to discuss Polanyi's point of view that "in the free cooperation of independent scientists we shall find a highly simplified model of a free society." Since physicists thrive on models, you will be interested, I am sure, to examine the lesson for the political and economic theory of society as a whole which Polanyi draws from his investigation of his model Republic of Science. Bronowski's aim is "to show that the parts of civilization make a whole" and, in particular, he wants to clarify "the place of science in the canons of conduct which it has still to perfect." He advances three main theses. 1. Creative activity is basically the same in the sciences and in the arts. 2. If there is any difference between the two fields, it is that the sanction of experienced fact imposes an exact boundary which encloses the scientist in a way in which it does not constrain the poet or the painter. The scientist's need to test his concepts continually against experience imposes what Bronowski calls the "habit of truth" upon him, and through him on our whole civilization. 3. A study of the conditions for the success of science uncovers in them "the values of man which science would have had to invent afresh if man had not otherwise known them : the values which make up The Sense of Human Dignity." For lack of time I shall not develop any further Bronowski's first thesis on the universality of the creative process. In developing his second thesis on the "Habit of Truth" Bronowski stresses the role played in the scientific method by concepts, even though he fully realizes that this view is not shared by everyone, and in particular not by the empiricist and the operationalist schools of philosophy. NON-TECHNICAL ASPECTS OF SCIENCE 13 Bronowski formulates the following familiar sequence as characteristic of science: observation of appearances, organization of these into laws, creation of concepts based on these laws and the testing, and, if necessary, correction, of these concepts by observing predicted behaviour in other experiences. I shall here, for a selfish reason which will soon become apparent, digress for a while from Bronowski's main line of argument. It is not given to many scientists to introduce entirely new concepts. These are the Newtons, the Einsteins, the Plancks, the Bohrs and the Heisenbergs. Most of us have to be content to be the hewers of wood and the drawers of water, and to spend our working days busily and happily either testing the consequences implied by some current concept (always in the hope that a contradiction will emerge requiring a modification or a refinement of the concept), or collecting reliable data which might later be organized by someone, not necessarily ourselves, into new patterns of order, leading to new laws, and perhaps eventually to new concepts. It is in this workaday world of the scientist that another small difference between the arts and the sciences crops up which, nevertheless, is a source of gratification to the human vanity of even a run-of-the-mill scientist. In the frescoes of a Rafael or a Ghirlanclaio the world pays tribute to the creator of the overall concept and of the grand design of the masterpiece, but no attempt is made to apportion individual credit to the many now nameless apprentices in the master's studio who have contributed a skillfully draped garment here, a chubby cherub there, to the overall design blocked out in bold but rough outline by the master painter. Science is a much more cumulative and step-by-step activity in which even a minor contributor stands a fair chance of having his name linked to his small share in the total enterprise. To use a personal example, and now you see why I have taken this detour, the so-called Volkoff method of extracting from observed resonance frequencies the components of the tensor describing the coupling of nuclear electric quadrupole moments to the electric field gradient in crystals lacking axial symmetry is a very straightforward and unsophisticated application of elementary Fourier analysis and diagonalization of matrices. It could have been, and surely would have been, developed by any other physicist faced for the first time with the same problem. Yet, I will not deny that it gave me pleasure to see this minor bit of technique linked with my name in a standard review article3 and in a comprehensive monograph on the subject.4 I hasten to add that this technique has so far contributed only to the 14 PHYSICS IN CANADA verification, and not to any modification of the underlying concepts. Nevertheless, it is a minor manifestation of the habit of testing and correcting the concept by its consequences in experience which (according to Bronowski) has been the spring within the movement of our civilization since the Renaissance. We now return to Bronowski's third and main thesis: the impact of science on human values. Condensed to barest outline (and omitting most of the numerous quotations included in the oral presentation; the reader is referred to Bronowski's original article for these) his argument runs as follows. If the truth of a concept is to be tested in action then certain prerequisites follow: independence in observation, and then in thought. As a result science has bred the love of originality as a mark of independence. Originality means dissent, but this is not an end in itself. Dissent is to freedom, as originality is to independence of mind: one a mark of the other. Independence must be protected if science is to become effective as a public practice. This leads to the need of free inquiry, free speech, free thought, tolerance. "The society of scientists must be a democracy. It can keep alive and grow only by a constant tension between dissent and respect, between independence from the views of others and tolerance for them." Since "science confronts the work of one man with that of another and grafts each on each . . . it cannot survive without justice and honour and respect between man and man." "Science is not a mechanism but a human progress. Human search and research is a learning by steps of which none is final, and the mistakes of one generation are rungs in the ladder, no less than their correction by the next." Here I will indulge in another personal note to illustrate two of Bronowski's points which I have just related: dissent as a necessary component of scientific progress, and the inevitability of human error, which together with its correction can still serve as a rung in the ladder. My very first independent scientific publication5 as a graduate student working under Professor Oppenheimer's direction in 1939 arose from my questioning Schwarzschild's long accepted statement that there exists a natural general relativistic limit to the mass of a sphere of matter of constant density. I pointed out that this limit exists only if the pressure at the centre is required to remain finite. However, in attempting to investigate the behaviour of massive spheres of constant density when the pressure was allowed to become infinite at the centre I made the rash statement that the differential equation which I set up could not NON-TECHNICAL ASPECTS OF SCIENCE 15 be integrated exactly, and attempted to treat the problem numerically (and as it turned out later, not too successfully). Ten years later Prof. Max Wyman8 pointed out that my inability to solve my equation exactly was entirely due to my failure to recognize it as a form of the Riccati equation (apparently "well-known" to mathematicians, but not to myself). He then proceeded to give a rigorous discussion of the properties of what he, nevertheless, generously named "Volkoff's Massive Spheres" which now remain under that name in the literature as a permanent extension of Schwarzschild's work. This personal incident was quoted as an illustration of Bronowski's words: "This is why the values of science turn out to be recognizably the human values: because scientists must be men, must be fallible, and yet as men must be willing and as a society must be organized to correct their errors. William Blake said that 'to be an Error and to be Cast out is a part of God's design'. It is certainly part of the design of science." "The society of scientists has to solve the problem of every society, which is to find a compromise between man and men. It must encourage the single scientist to be independent, and the body of scientists to be tolerant. From these basic conditions, which form the prime values there follows step by step the spectrum of values: dissent, freedom of thought and speech, justice, honor, human dignity and self-respect." This completes the argument in support of Bronowski's thesis, which is one of the two main points of this talk, that "if these values did not exist, then the society of scientists would have to invent them to make the practice of science possible." Science is not morally neutral. The remainder of this address as presented orally (and abbreviated considerably here to conserve space) consisted of recounting in some detail and acompanied by copious quotations (for which the reader is referred to the original article2) Polanyi's contention that scientists form a society the modus operandi of which has valuable lessons for free society as a whole. Scientists choose their problems freely, and pursue them independently, but, nevertheless, operate as members of a closely-knit organization. Their activities are coordinated by the continual adjustment of the efforts of each to the hitherto achieved results of the others. This leads to a joint result unpremeditated by any of those who bring it about, and which will be the best possible if each consecutive step is decided upon by the person most competent to do so. In discussing the method whereby this mutual adjustment takes place Polanyi brings out the same tension between forces of conformity 16 PHYSICS IN CANADA and dissent which was already noted in connection with Bronowski's article, and both authors demonstrate that such tension is not inconsistent with stability of the society of scientists. Polanyi then discusses the role played by tradition in science, and notes that it upholds a dynamic authority which cultivates originality, and whose continued existence depends on its constant self-renewal through the originality of its followers. In this he sees a valuable lesson for free society as a whole. "A free society may be seen to be bent in its entirety on exploring selfimprovement—every kind of self-improvement. This suggests a generalization of the principles governing the Republic of Science. It appears that a society bent on discovery must advance by supporting independent initiatives, coordinating themselves mutually to each other. Such adjustment may include rivalries and opposing responses which, in society as a whole, will be far more frequent than they are within science. Even so, all these independent initiatives must accept for their guidance a traditional authority, enforcing its own self-renewal by cultivating originality among its followers. This view transcends the conflict between Edmund Burke and Tom Paine. It rejects Paine's demand for the absolute self-determination of each generation, but does so for the sake of its own ideal of unlimited human and social improvement. It accepts Burke's thesis that freedom must be rooted in tradition, but transposes it into a system cultivating radical progress. It rejects the dream of a society in which all will labour for a common purpose, determined by the will of the people. For in the pursuit of excellence it offers no part to the popular will and accepts instead a condition of society in which the public interest is known only fragmentarily and is left to be achieved as the outcome of individual initiatives aiming at fragmentary problems." For an elaboration of this point of view the reader is urged to consult the original article. I have only one duty left to perform. I have been speaking to you of the role played by tradition in a society of scientists. I must, therefore, remind you that two years ago President Duckworth inaugurated what he hoped might become the tradition of a Presidential Poem. He thereby threw out a challenge to his successors. Last year President Pounder chose to exercise the scientist's sacred prerogative of dissent from tradition. I choose to conform, and accept the challenge. For the theme of my poem I choose the technical subject which I now realize I should have chosen for this whole talk in place of the rambling general discourse which you have just heard. And since this whole Presidential address has been derived from other sources, so, for better or verse7, also is the NON-TECHNICAL ASPECTS OF SCIENCE 17 Presidential Poem whose title has been inspired by our last night's delightful program of songs. SONGS O F AN A T O M I C N U C L E U S Sing a song of magnets, A crystal full of spins, When the nuclei relax Then the fun begins. With the r.f. tickling them, They all burst into song, Mais, quel dommage qu'il n'y a plus de temps Pour écouter leur belle chanson. References and Notes !J. Bronowski, Science and Human Values, Harper & Bros., New York, 1959. M. Polanyi, Minerva 1, No. 1, 54 (Autumn, 1962). 3M. H. Cohen and F. Reif, Quadrupole Effects in NMR Studies of Solids, Solid State Physics, 5, 321 (1957), p. 435. 4 A. K. Saha and T. P. Das, Theory and Applications of Nuclear Induction, Saha Inst, of Nuclear Physics, Calcutta, India, 1957, p. 377. C G. M. Volkoff, Phys. Rev. 55, 413 (1939). «Max Wyman, Phys. Rev. 75, 1930 (1949). 7 Not a printer's error, but the inauguration of the tradition of a Presidential Pun in addition or as an alternative to the President ial Poem. 2 Profile: Leon Katz 30 YEARS AGO there appeared in the corridors of the old Physics Building at Queen's University a graduate student whom very few of the final year and other graduate students knew from undergraduate days. Many never did get to know him because his time was obviously carefully organized and rigorously controlled. With some, this would have meant that life was real, life was earnest—and dull. With Leon Katz life was never dull, was also fun and he was a welcome visitor in the labs of the other graduate students. His intellectual curiosity and his enthusiasm for physics, both his and theirs, were infectious and stimulating. Leon Katz, born in Poland in 1909, came to Toronto at an early age and secured his primary and secondary school education there. After high school he found work in Kingston at the Monarch Battery Works where he put in a full day's work at research and development in between attending classes in Engineering Physics at Queen's University, from which he graduated in 1934. After graduation he returned to the Monarch Battery Works as plant foreman and continued there until 1936. Just as a side line, in 1935 he helped as an active campaigner to get the late Norman McLeod Rogers elected to Parliament. He came back to Queen's as a graduate student under the late Dean A. L. Clarke to work on a resonance method for determining the ratio of the specific heats of gases. Katz developed a crude oscillating piston device into an extraordinarily elegant, high-precision piece of apparatus. His Master's thesis was certainly the equal of many a Ph.D. thesis and it won him scholarship recognition at more than one post-graduate school. He chose to go to the California Institute of Technology which he attended from 1939 to 1941 and from which he received the degree, Doctor of Philosophy cum laude. He worked under C. D. Anderson on the construction of a two-foot cloud chamber and on cosmic ray distribution at sea level. After graduation he went to the Westinghouse Electric and Manufacturing Co. in Pittsburgh as resident engineer in their electronics and electromechanical division. His work there with proximity fuses and his propensity for getting a little fun out of life made him one of the ALMOST LEON KATZ 19 fathers of the radar speed trap used so effectively by law enforcement officers all over the continent. He observed that passing cars gave him a marked Doppler effect when he pointed his transmitter out of the laboratory window at the traffic on a nearby highway. Leon took quite a ribbing from fellow physicists years later at a luncheon meeting at which he told how he had explained as an expert to the great satisfaction of the magistrate and the even greater embarrassment of the speeding motorist in a Saskatchewan police court how the device worked. His fellow physicists had apparently been on the wrong end of police radar development! In 1946 Katz went to the University of Saskatchewan to "look after" the newly acquired Betatron. His work there has been a credit to him and an honour to Canada. Other betatrons may have been something of white elephants but not that at Saskatchewan and the work which Katz and his associates have done has received world-wide recognition. With these accomplishments as basis and guarantee of the future, who could refuse to listen to his proposition for an even better accelerator? Those of us who talked to Katz in Quebec this past June know that this dream has now been translated into reinforced concrete underground chambers and beam paths. The rest of the gear follows! In 1941, in Pasadena, California, Leon Katz married Miss Georgina Caverly of Kingston. They have four children, three boys and a girl. Taking care of their needs, as well as Leon's, has kept Georgina from more than casual and very occasional return to the journalistic career she followed before marriage. Her intense interest in his career is well revealed by an incident arising out of the preparation of this note. I wired Leon two questions on early work. Georgina replied as follows: "Leon in Moscow. Answers are. . . ." And they were what I wanted! Many honours and awards have come to Katz. He was the only Canadian invited to the All Union Conference of the Academy of Sciences of the USSR in November, 1957 and was one of the Canadian delegates to the Second International Conference on the Peaceful Uses of Atomic Energy. He has served as secretary of the sub-committee on Nuclear Constants at the American Academy of Science—National Research Council, and is past president of Canadian Friends of Hebrew University, Saskatoon Branch. He is a member of Sigma Xi, and the Physical Society (British), a Fellow of the Royal Society of Canada and of the American Physical Society, a long time member of C.A.P. and more than once a member of its Executive Committee. He has served C.A.P. in special capacities, being a member of its committee to report on the feasibility of a high energy machine for Canada, and chairman of its committee to acquire a high energy machine for Canada. His published PHYSICS IN CANADA 20 papers cover work in the fields of thermodynamics, microwave spectroscopy and nuclear research. C.A.P. can be thankful that Katz was one of the more than three and a quarter million Canadians who went south of the border in search of higher education but was one of the few who returned to do great things in physics in Canada. He'll be good for C.A.P. as its new President. ROBERT H . HAY HtiiEMB caa Evea S H O O T u«tee PA a 1 C /You MEAiJ OM THE ) GOCF CoueSE ? ( CIOOD V^^ \ Û B I E F , SHOULD HOW I KNOW ? '. ! ,-^hr Peanuts" characters copyright, 1950, by United Feature Syndicate, Inc. Cartoons and captions by Robert Bukata, University of Manitoba. C.A.P. Affairs: The 1963 Congress T H E ANNUAL M E E T I N G , Q U E B E C , J U N E 7 T H , 1 9 6 3 THE FOLLOWING MATERIAL has been condensed from the Minutes of the Annual Business Meeting. PRESIDENT'S R E P O R T F R O M COUNCIL Standing Committees Certain regular activities of the Association have been continued by our standing committees. The Awards Committee, under the chairmanship of Dr. Larkin Kerwin, has made a selection, and the C.A.P. Medal will be presented this evening at the banquet. Dr. J. H. Blackwell, for the Prize Committee, will report this evening on the winners of the prize competition for undergraduates. The Secondary School Science Committee has, as you know, been gradually extending the scope of its school competitions. This year competitions were held in nine provinces, and later in the course of this meeting the names of the first place winners will be announced. A complete list will be published in Physics in Canada. The Association provided $ 3 , 0 0 0 for prizes for these competitions. Dr. W. N. English's committee on lecture tours arranged for seven lecturers who gave C.A.P. lectures in twenty-five different institutions. Professor John Robson constituted a committee of one to carry on the new venture introduced last year to bring in Distinguished Visiting Physicists. Dr. Luis Alvarez visited two Western Universities to redeem his promise of a return visit, when illness caused him to cancel last year's tour, and Dr. Norman Ramsey visited two Eastern Universities. Subject Divisions The subject divisions of Medical and Theoretical Physics continue to be active. A new subject division of Earth Sciences has been formed. Committee on Industrial Physics A report by the Committee on Industrial Physics has been published in the most recent issue of Physics in Canada. Another 1 0 , 0 0 0 word 22 PHYSICS IN CANADA report has been submitted to the Executive, and investigations are in progress whether it can be published in part or in full. Physics in Canada The Editor of Physics in Canada, Dr. D. M. Hunten, unfortunately has had to resign due to a change of location. I invite the members to express their appreciation of his excellent services in this timeconsuming and onerous position. A successor will be appointed by the joint Council Meeting tomorrow. Miscellaneous A 1962 membership list has been distributed. A revised edition of the pamphlet "Careers in Physics" to be published both in French and English is in preparation. The possibility of allowing members to substitute as part of their membership privileges subscription to some other journal as an alternative to the Canadian Journal of Physics is being investigated. The proposed new journal in Earth Sciences to be published as one of the N.R.C. journals, is one such possibility. C.A .P. Educational Trust Fund Promotional literature has been prepared by Dr. Hay and after approval by the Executive, is now being printed. Distribution to a large list of potential donors will be followed up by personal visits from C.A.P. members. As will be seen from the Treasurer's report at the present time the Fund has been nearly exhausted. No corporate members have been recruited as yet. Future Congresses The Royal Society of Canada has announced that its 1964 meeting will be held in Charlottetown, P.E.I., and its 1965 meeting in Vancouver, B.C. Limited housing facilities in Charlottetown prevent an invitation being issued to all the learned societies. The C.A.P. has received invitations from the neighbour institutions of Dalhousie in Halifax, N.S. and U.N.B. in Fredericton. After some consideration the Executive has accepted the invitation to hold the 1964 C.A.P. Annual Congress at Dalhousie University in Halifax, N.S. A straw vote expression of opinion of this meeting will be useful with respect to the desirability of following the Royal Society to Vancouver in 1965. (A majority of those present voted in favour of a B.C. Congress in 1965.) C.A.P. AFFAIRS 23 OTHER BUSINESS The Treasurer's Report showed a revenue of $12,027.00 and expenses of $9,445.00 for the year ending April 30; cash in hand was $8,800.00. In addition, the High Energy Study Fund contained $240.00 and the Educational Trust Fund $260.00. The Registrar's Report gave the following membership as of April 30th: members, 588; associates, 359; students, 397; members without fees, 9; total, 1353. Twenty-eight members, twenty-nine associates and 123 students had not yet paid their fees. There were 7 active student chapters representing a gain of 2 and a loss of 3 chapters in comparison with 1962. A report of the High Energy Committee was accepted including three recommendations that steps should be taken to acquaint Canadian academic and governmental circles with the comparative weakness of the Canadian program in this field. A motion was passed authorizing the initiation of a study of the demand of research physicists in Canada over the next ten years. This motion was proposed by Dr. Robson and seconded by Dr. Dugdale. The new officers and counselors were declared elected and the new President, Dr. Volkoff, took over. [The names of the executives and council appear at the end of this section.] O N T A R I O E L E C T O R A L DISTRICTS The following electoral districts in Ontario were set up at the meeting. (i) Eastern Ontario; east of 78° W longitude (ii) South-western Ontario; west of 80° W longitude and south of Georgian Bay or south of 43.5° N latitude (iii) Central and Northern Ontario; the remainder C . A . P . P R I Z E EXAMINATION The Examining Committee for 1962-1963 was J. H. Blackwell (chairman), R. E. Bell and I. K. MacKenzie. All public operations of the Committee were carried out bilingually. The organization of the examination began in October and the examination was made final in February. On the 19th January the Heads of the Physics Departments of the 33 universities approached in 1962 were notified of the 1963 examination and asked to submit estimates of their probable number of candidates by the 15th February. Twenty-five replies were received, in some cases only after reminders had been sent. V A N C E : CRYOGENIC TECHNOLOGY. 1963. Approx. 648 pages. Prob. $18.75. G I L M A N : THE ART A N D SCIENCE OF G R O W I N G CRYSTALS. BLACKWOOD, KELLY, GENERAL PHYSICS. A BELL: 1963. 493 pages. $20.00. Textbook for Colleges, Third Edition. 1963. 685 pages. $8.50. MACDONALD: INTRODUCTORY STATISTICAL MECHANICS FOR PHYSICISTS. 1963. 177 pages. $6.75. WANGSNESS: INTRODUCTION TO THEORETICAL Classical Mechanics and PHYSICS. Electrodynamics. 1963. 413 pages. $9.75. INTRODUCTION TO THEORETICAL PHYSICS. Relativity, Thermodynamics, Kinetic Theory, and Statistical Mechanics. 1963. Approx. 312 pages. Prob. $8.50. WANGSNESS: THREE-DIMENSIONAL LUR'E: PROBLEMS A N D THE THEORY OF ELASTICITY. An Inter- science Book. 1963. Approx. 412 pages. Prob. $12.00. JUDD, WYSZECKI: COLOR IN BUSINESS, SCIENCE A N D INDUSTRY. Second Edition. 1963. 500 pages. $15.00. H U T C H I S O N , BAIRD: THE PHYSICS OF ENGINEERING SOLIDS. T A Y L O R : INTRODUCTORY MECHANICS. S P R O U L L : MODERN PHYSICS. BAUMRIN: 1963. 368 pages. $8.00. 1963. 423 pages. $8.75. Second Edition. 1963. 630 pages. $9.75. PHILOSOPHY OF SCIENCE, Volume I. An Interscience Book. 1963. 370 pages. $9.75. H U A N G : STATISTICAL MECHANICS. 1963. 470 pages. $10.75. Volume 9 in the Interscience Monographs and Texts in Physics and Astronomy. 1963. Approx. 288 pages. Prob. $9.75. L O N G M I R E : ELEMENTARY PLASMA PHYSICS. INTERPLANETARY DYNAMICAL PROCESSES. Volume 8 in the Interscience Monographs and Texts in Physics and Astronomy. 1963. 272 pages. $12.50. PARKER: Recent Interscience Tracts in Physics and Astronomy MAGNETIC RESONANCE AT HIGH PRESSURE. 1963. Approx. 112 pages. $4.75. # 2 0 — G U I N I E R , D E X T E R : X-RAY STUDIES OF MATERIALS. 1963. Approx. 166 pages. Prob. $4.95. # 1 9 — R O S E : PHOTOCONDUCTIVITY. 1963. Approx. 160 pages. Prob. $4.95. # 1 8 — B R O W N : MICROMAGNETICS. 1963. 143 pages. $5.95. # 1 7 — D E N I S S E , D E L C R O I X : PLASMA WAVES. 1963. Approx. 224 pages. Prob. $9.75. # 1 6 — W I L S O N : NUCLEON-NUCLEON INTERACTIONS. Experimental and Phenomenological Aspects. 1963. Approx. 264 pages. $6.00. # 1 5 — A D A I R , F O W L E R : STRANGE PARTICLES. 1963. 151 pages. $4.75. # 1 3 — F R A N Ç O N : MODERN APPLICATIONS OF PHYSICAL OPTICS. 1963. Approx. 114 pages. $4.50. #24—BENEDEK: WILSON—WOUTHUYSEN: PHYSICS, Volume 7. PROGRESS IN ELEMENTARY PARTICLE AND COSMIC RAY A North-Holland (Interscience) Book. 1963. In Press. S M I D T : MAGNETIC A N D ELECTRIC RESONANCE A N D RELAXATION. A North-Holland (Interscience) Book. 1963. 789 pages. $25.00. Send for examination copies JOHN WILEY & SONS, Inc. 605 Third Avenue N e w York, N.Y., 10016 RESEARCH IN PHYSICS PLASMAS Interaction of plasmas with electromagnetic and magnetic fields including simulation of geophysical and space phenomena, re-entry physics, microwave and quantum electronics (lasers) and plasma diagnostics. SOLID STATE Properties of highly compensated semiconductors and near-insulators, photon interactions with solids, thin films, ferrites. RADIATION DETECTION Semiconductor nuclear particle detection, optical detection, infrared detection, cryogenics. COMMUNICATIONS Systems analysis, antenna design, millimetre waves, solid state circuitry, satellite telemetry . SEMICONDUCTOR DEVICES Analysis of field-effect and other new devices, varactors and transistors at very high current densities, development of advanced types of transistors and diodes. Applications are invited from physicists and engineering physicists who are interested in a career in pure or applied research. RCA VICTOR COMPANY, LTD. RESEARCH LABORATORIES Director of Research 1001 Lenoir Street Montreal 30, Quebec DR. J . R. WHITEHEAD, 26 PHYSICS IN CANADA The examination papers were mailed late in February and the examination was held on Tuesday, March 5th. Fifty-seven candidates from 17 universities wrote the examination. The marking of the papers and double-checking of the top candidates was not completed until early May. This was not due entirely to the slowness of the Chairman, but in part, at least, was due to the very close original ranking of the 2nd to 9th candidates. This necessitated even closer checking than usual and conferring amongst examiners. In the end it was decided to amalgamate the second and third prize money and distribute the sum in five equal parts to candidates Nos. 2-6 who were rated as second-equal for all official purposes. The results in the form of a ranked list without marks were circulated to the heads of the Departments of Physics and some officers of the Association, and the six winners were notified. They were: ( 1 ) A. B. Langdon (2) R. Birgenau (Equal—in C. A. Bouchard alphabetical order) C. Brassard G. J. Hurford E. Y. C. Lu University of Manitoba University of Toronto Université Laval Université de Montréal McGill University Dalhousie University Comment should be made on the exceptionally good performance of Mr. Langdon who led his nearest rivals by 16 per cent. Despite the difficulty with the candidates immediately following Mr. Langdon, the spread in marks was quite large but it was noticeable that there were a half-dozen or more candidates whose scores were so low that it is doubtful whether they should have been encouraged to enter. The present chairman would like to acknowledge his indebtedness to previous chairmen and in particular to the Chairman for 1962, Professor R. E. Bell, for the excellent administrative procedure set up. By following the 1962 system the work of organizing the examination was made very easy. In conclusion the Chairman would like to thank both Professor Bell and Professor MacKenzie for their hard work, their cooperation and their tolerance of the Chairman's failings: J . H . BLACKWELL C . A . P . H I G H SCHOOL PHYSICS P R I Z E EXAMINATIONS Competitions for high school physics students were held in nine provinces this year. Following the practice established last year $400.00 was provided for prizes in each province, with the first prize being C.A.P. AFFAIRS 27 standardized at $250.00. Again this year several universities added their own contributions to the prize fund. The following is a list by provinces of examiner, or examining committee and the prize winners : Newfoundland Professor P. D. P. Smith, Memorial University. First ($250)—Bill Munro, United College, St. John's. Second ($100)—Reginald Quinton, Bishop's College, St. John's. Third ($ 50)—Chesley Mills, Central High School, Bishops Falls. Nova Scotia Professor D. B. I. Kiang, Dalhousie University. First ($250)—Edward Doe, Prince Andrew High School, Dartmouth. Second ($150) —Ronald Ferguson, West Pictou High School. Third ($100)—Barbara Trenholm, Prince Andrew High School, Dartmouth. Fourth ($ 75)—Douglas Guptil, Queen Elizabeth High School, Halifax. Fifth ( $ 75 ) —William Sutherland, New Glasgow High School. ($100 contributed by each of Acadia, St. Francis Xavier and Dalhousie Universities. ) New Brunswick First Second Third Quebec First Second Professor M. A. Edwards, University of New Brunswick. ($250)—Norman Cochrane, Moncton High School. ($100)—David Gass, Sackville High School. ($ 50)—John Finley, Saint John High School. Professor R. Stevenson, McGill University. ($250)—J. Hoskins, Chambly County High School. (Three prizes each $83.33) M. Blanchard, Ecole Regionale des Milles Isles. A. Dancose, College Mont St. Louis. A. Smith, Westhill High School. Third (Four prizes each $50.00) R. de Jean, Beaconsfield High School. G. Louis, Mount Royal High School. M. Bastien, Ecole Régionale des Mille Isles. D. Deschenes, Séminaire de Rimouski. (A total of $300.00 was contributed by Université Laval, Université de Montréal, McGill and Loyola. ) PHYSICS IN CANADA 28 Ontario First Second Third Professor A. B. McLay, McMaster University. ($250)—Roger Chetwynd, University of Toronto Schools. ($ 100)—David Fort, Moira Secondary School, Belleville. ( $ 50)—David Rotenberg, Jarvis Collegiate, Toronto. Manitoba Professors B. G. Hogg and K. G. Standing, University of Manitoba. ( $250)—Norman Wilde, Kelvin High School, Winnipeg. ($150)—William Unruh, Menonite Brethren Collegiate, Winnipeg. First Second Third (Two prizes $62.50 each) Kenneth Paschke, Morris High School, Morris. Gordon Greeniairs, St. John's-Ravenscourt. ($125.00 contributed by the University of Manitoba.) Saskatchewan First Professor L. H. Greenberg, Regina Campus, University of Saskatchewan. ($250)—Robert Jackson, Punichy High School. Second (Two prizes $75.00 each) P. Dagert, Mount Royal Collegiate, Saskatoon. Guenther Plattner, Luther College, Regina. Alberta First Second Third Professor S. B. Woods, University of Alberta. ( $250)—David Newquist, Prairie High School, Three Hills. ($100)—James Waugh, Lethbridge Collegiate. ($ 50)—Brian Stackhouse, Brooks High School. British Columbia First Professor D. L. Livesey, University of British Columbia. ($250)—Thomas Aussenegg, Ladysmith, British Columbia. Second (Five prizes $30.00 each) Donald Allan, West Vancouver. Joost Blom, Pitt Meadows. Alexander Dawes, Victoria. Robert Harrison, Campbell River. Philip Stockmeyer, Richmond. Congratulations to all concerned J . S. FRASER C.A.P. AFFAIRS 29 E A R T H PHYSICS DIVISION The invitation to Earth Physicists in the winter issue of Physics in Canada has added a final 41 "founding members" whose names are recorded here. R. G. Agarwal, F. M. Anglin, A. E. Beck, B. C. Blevis, C. M. Carmichael, J. H. Chapman, J. F. Clark, L. S. Collett, C. Crowe, E. R. Deutsch, H. K. Ellenton, R. Fanaki, H. R. Hardy, W. J. Heikkila, J. A. Jacobs, R. W. Johnston, A. M. Kelly, J. E. Keys, M. P. Langleben, J. E. Lokken, D. L. Matthews, A. Misener, R. Montalbetti, A. G. McNamara, D. A. MacRae, R. W. Nicholls, F. J. Osborne, W. Petrie, G. L. Pickard, D. Rankin, J. Rau, D. W. Rice, M. G. Rochester, B. Segal, I. Shkarofsky, H. M. Sullivan, R. J. Uffen, E. L. Vogan, R. K. Wanliss, J. K. Walker, J. T. Wilson. The welcome mat remains out to those wanting better information and a more effective voice on the development of Earth Physics in Canada. Just send your name to the Division Secretary, T. R. Hartz, 915 Mountainview Ave., Ottawa 3. The $1.00 Division fee is billed with annual C.A.P. dues. A B O U T THE ASSOCIATION of Physicists invites applications for membership from physicists, scientists and engineers whose work is related to physics, from teachers of physics, and from university students studying physics or an allied course. Canadian citizenship or residence in Canada is not a requirement. Membership is available in four grades—full member, associate member, student member, and corporate member. Subject divisions of Theoretical Physics, Medical Physics, and Earth Physics are active. When the demand warrants, other divisions may be formed. For further details regarding membership or the Association write the Registrar, Canadian Association of Physicists, McMaster University, Hamilton, Ontario, or see the nearest Council member. The annual membership fees of the Association are as follows: Full members $15; Associate members, $6. Full members receive the Canadian Journal of Physics free, while Associate Members receive the Journal free for 4 years. All members receive Physics in Canada free. T H E CANADIAN ASSOCIATION 30 PHYSICS IN CANADA DEADLINE DATES FOR PHYSICS IN CANADA The deadline dates for the submission of material for publication in Physics in Canada are as follows: Autumn—August 20th; Winter— November 5th; Spring—January 7th; Summer—April 1st. The Editor would be pleased to publish articles of general interest describing interesting developments or progress in physics. President: L. Katz, University of Saskatchewan. Past-President: G. M. Volkoff, University of British Columbia. Vice-President: P. Lorrain, University of Montreal. Secretary : A. C. H. Hallett, University of Toronto. Treasurer. C. C. McMullen. Directors: F. T. Davies, Defence Research Board; J. H. Ormrod, McMaster University; A. Le mieux, University of Montreal. Division Chairmen: G. F. Whitmore, University of Toronto, Medical Physics', R. T. Sharp, McGill University, Theoretical Physics; P. A. Forsyth, University of Western Ontario, Earth Physics. Registrar: R. G. Summers-Gill, McMaster University. Editor: A. Vallance Jones, University of Saskatchewan. C.A.P. COUNCIL. B.C. and Yukon: J. E. Lokken, R. Barrie. Alberta: B. G. Wilson, W. K. Dawson. Sask. and Man.: K. G. Standing, L. H. Greenberg. S. W. Ontario: E. B. MacNaughton, P. A. Fraser. Central Ontario: H. M. Love, J. C. Stryland. Ottawa Valley: A. G. Ward, E. P. Hincks. Quebec: W. R. Raudorf, P. Marmet. New Brunswick and Newfoundland: W. J. Noble, S. W. Breckon. Nova Scotia and P.E.I.: H. D. Smith, W. J. Archibald. EXECUTIVE ADDRESS: Dept. of Physics, McMaster University, Hamilton, Ont. C.A.P. EXECUTIVE. F THIS BOOK OKJ BELATWISTIC NUCLEAO BEAC-rio-IS THE BEST ONE OF I'VE evee /WAA "Peanuts" characters copyright, 1950, by United Feature Syndicate, Inc. Cartoons and captions by Robert Bukata, University of Manitoba. News DISCOVERY OF DELAYED PROTON EMISSION IN THE 1963 Congress Issue of Physics in Canada (vol. 19, no. 3), there appear two abstracts of reports given in Quebec by R. Barton and R. McPherson of the McGill Radiation Laboratory, on the subject of delayed proton emission. They describe some of the first work to be done with the McGill cyclotron's regeneratively extracted beam before building expansion required shutdown for much of 1963. This work resulted in the discovery of the first "new" type of radioactivity in over 20 years. In 1939, Roberts and others at Chicago discovered delayed neutron emission in fission products, and in 1940, Petrzhak and Flerov in Russia discovered spontaneous fission of uranium. In 196263, Barton and McPherson bombarded aluminum and silicon targets with 97 MeV protons and discovered delayed proton emission, which is closely analogous to delayed neutron emission. In the decay process, a proton-rich nucleus, Si25, emits positrons with a half life of about 0.3 seconds, producing excited states in Al 25 that are proton-unstable. Protons are then emitted with discrete energies between 2 and 5 MeV, leaving behind the highly stable nucleus Mg24. Other delayed-proton emitters are Mg21, Ne17, and O 13 . A complete report of this work has been accepted for publication in the Canadian Journal of Physics. The experiments will resume when the cyclotron beam is again available. J . E . CRAWFORD N E W S FROM THE R C A VICTOR RESEARCH LABORATORIES, MONTREAL Visiting professors during the summer have been Dr. G. Paquette of the University of Montreal, who has been working with the Microwave and Plasma Physics Laboratory, Dr. C. Lemyre of the University of Laval, working in the Electronics Laboratory on analysis of the ultrahigh level injection conditions in power transistors at very high frequency, and Dr. Y. P. Varshni of the University of Ottawa, who has been working in the Solid State Physics Laboratory on recombination processes in 32 PHYSICS IN CANADA semiconductors. Allan Evans, who is completing his Ph.D. at the University of Wales, returned for the summer to do research on the physics of metal-oxide-semiconductor devices. Dr. Morrel P. Bachynski, Director of the Microwave and Plasma Physics Laboratory, was honoured by the Radio Corporation of America with its highest technical accolade, the David Sarnoff Outstanding Achievement Award n Engineering, for his outstanding contribution and leadership in his chosen field. The award was presented in New York on May 24, 1963, comprising a gold medal, a citation, and a cheque for $1000. The David Sarnoff Outstanding Achievement Awards were established by RCA in 1956 to commemorate the fiftieth anniversary in radio of General David Sarnoff. Two awards to individuals have been made annually since that time to one scientist and one engineer within the Corporation. Dr. G. G. Cloutier of the plasma physics group gave a series of invited lectures in the University of California, Los Angeles, summer course on Magnetofluid and Plasma Dynamics (June 17-28, 1963), and Dr. A. I. Carswell gave an invited paper on "Microwave Measurements of Electromagnetic Properties of Plasma Flow Fields" to the A.I.A.A. Fifth Biennial Gas Dynamics Symposium at Northwestern University, Evanston, Illinois, on August 16, 1963. Dr. R. W. Jackson gave an invited paper on "Semiconductor Beta and Gamma Detectors" to the Summer Meeting of the I.E.E.E. in June. As a result of the success of the telemetry transmitter designed and built by RCA Victor for the Alouette satellite, the advanced devices application group of the Research Laboratories have supplied telemetry transmitters for the NASA satellites "Topsi" and "MMC" (micrometeoroid measurements capsule) and are being kept busy with an increasing number of projects of the same nature. R.W.JACKSON T H E NORANDA RESEARCH C E N T E R The new building of the Noranda Research Laboratories in Pointe Claire, P.Q., has been completed and staff and equipment began moving in in July. The Center has a floor area of 42,000 sq. ft. and was erected at a cost of about $1,300,000. The present staff numbers about 50, which includes about 8 physicists. Most of the physicists, under the leadership of Dr. C. H. Champness, are engaged in research on thermoelectric materials, and on some of the basic problems in the materials for transmission cables and other copper-based products used for communications. R . W . JACKSON NEWS 33 N E W S FROM U . B . C . The University of British Columbia approved the setting up of a separate Department of Geophysics as from July 1, 1963. Professor J. A. Jacobs, Director of the Institute of Earth Sciences, was named Head of the new department. Dr. J. C. Savage, Dr. W. F. Slawson, Dr. G. P. Erickson, Dr. T. Watanabe and Dr. M. A. Chinnery were transferred from the Department of Physics to the Department of Geophysics. Dr. J. A. Jacobs was invited to join the faculty of a NATO Advanced Study Institute on Low Frequency Electromagnetic Radiation which met in Bad Homburg, Germany, July 22-August 2, 1963. J . A . JACOBS N E W S F R O M THE UNIVERSITY OF W A T E R L O O With the aid of government and University grants the Department has obtained a Collins Liquefier. This will give a boost to the solid state and low temperature experiments which have been awaiting its arrival. The physics of thin metallic films is going ahead as Dr. Boswell has obtained an electron microscope through N.R.C. and University grants. In keeping with the trend towards greater application of physics in industry, the Department has introduced a new co-operative Honours Applied Physics programme leading to an Honours B.Sc. degree. The first students will register this fall and as in the co-operative Engineering programme, students will spend alternate terms in University and industry. The Mathematics and Physics content of the course is the same as that of the regular Honours Physics course, but there is an extended choice of electives in Science and Engineering subjects. An "expedition" to view the solar eclipse of July 20, 1963, was organized by Dr. G. E. Reesor. Members from all faculties of the University journeyed by special train to Moose River, about 50 miles south of Moosonee, Ontario. None were professional astronomers and the intention was to take photographs and record light intensity and temperature during the eclipse. J . A . COWAN N E W S FROM THE M E D I C A L PHYSICS DIVISION The Division of Medical Physics met during the C.A.P. Congress which was held at Laval in June. The Medical Physics Division sponsored two Scientific Sessions. One session consisted of 8 papers dealing with topics in biophysics and radiobiology and the second scientific 34 PHYSICS IN CANADA session consisted of 9 papers dealing with radiation physics or medical physics. The Tenth Annual Meeting of the Medical Physics Division was held on Thursday, June 6. The new executive for the 1963-64 year is as follows: Dr. H. E. Johns, Past Chairman; Dr. Gordon F. Whitmore, Chairman; Dr. Rene A. Beique, Vice-Chairman; Mr. Paul M. Pfalzner, Secretary-Treasurer; Dr. Garth Olde, Councillor. Drs. Johns and Whitmore are at the Princess Margaret Hospital in Toronto and associated with the Department of Biophysics, University of Toronto. Dr. Beique is the Physicist at the Montreal General Hospital in Montreal. Mr. Pfalzner is associated with the Ontario Cancer Foundation, London Clinic, London, Ontario and Dr. Olde is the Physicist in the Isotope Laboratory, University Hospital, Edmonton, Alberta. For the past two years the Division of Medical Physics has been studying a change in their bylaws and name It was decided at the Tenth Annual Meeting that the name of the Division would now be The Division of Medical and Biological Physics. This decision for a change of name and change in the bylaws has been sent to the Executive of The Canadian Association of Physicists for their consideration. Dr. Beique of the Montreal General Hospital has recently been appointed an Editor of the Journal of The Canadian Association of Radiologists. Dr. J. E. Till of the Department of Biophysics, University of Toronto and the Princess Margaret Hospital in Toronto, has been appointed an editor of Radiation Research. Dr. A. F. Holloway, Senior Physicist of the Manitoba Cancer Foundation has recently been appointed a physicist to the Executive Council and a Full Advisory Board of the Advisory Committee on Clinical Uses of Radioisotopes in Humans to the Minister of National Health and Welfare. SYLVIA FEDORUK Canadian Physicists AT THE UNIVERSITY OF BRITISH COLUMBIA . . . . DR. G . M . GRIFFITHS of the nuclear physics group has returned after a year's leave at the California Institute of Technology . . . . D R . M Y E R B L O O M has been granted a renewal of his Alfred P. Sloan Fellowship . . . . Both B L O O M and G R I F F I T H S have been promoted to Full Professors . . . . In the theoretical physics group DRS. L. D E SOBRINO and P. RASTALL have been promoted to Associate Professors and R . HOWARD has been promoted to Assistant Professor. RASTALL is going an a year's leave of absence to the University of Texas. D R . H . SCHMIDT from Koln University has been appointed as Visiting Lecturer. D R . M . J . M C M I L L A N who has spent two years on an NRC Post-Doctorate Fellowship in Turin and Cambridge is joining the Department as Assistant Professor . . . . In the plasma physics group DRS. A. J . BARNARD and F. L. CURZON have been promoted to Associate Professors. D R . R . J. CHURCHILL has resigned to accept an industrial research position in the U.S., and DR. P. R. SMY has resigned to accept a post at Glasgow University . . . In the low temperature group DR. P. W. M A T T H E W S has been promoted to Assistant Professor. D R . M . J . CROOKS is joining the Department as Assistant Professor after obtaining his Ph.D. at Yale and following his research supervisor Prof. H. A. Fairbank to Duke University as a Research Associate for a year. MR. A. F. R I C E who is completing his D.Phil, at Oxford is joining the Department as Instructor . . . . In the solid state group D R . J . C . G I L E S has resigned to return to the U.K., and to replace him D R . C . F. SCHWERDTFEGER has been appointed as Assistant Professor. He is completing a year as Research Associate in Indiana after receiving his Ph.D. from Notre Dame. MR. D. H. GOODE who is completing his Ph.D. in Canterbury, New Zealand is expected to join the solid state group as Instructor in January . . . . In the nuclear physics group DR. B. L. W H I T E has been promoted to Associate Professor. D R . M . K. CRADDOCK has been appointed as Assistant Professor on completion of his D.Phil, at Oxford. DR. G. M . BAILEY has been appointed as Instructor on completing his Ph.D. at the Australian National University . . . . In the spectroscopy group DR. F. W. DALBY has been promoted to Associate Professor . . . . In the nuclear magnetic resonance group D R . D . L L . W I L L I A M S has been promoted to Assistant 36 PHYSICS IN CANADA Professor. D R . K . W . GRAY from Bangor, Wales is coming as an NRC Post-Doctorate Fellow. M R . V . M. CHIBRIKIN from the Institute of Chemical Physics in Moscow who spent four months at U.B.C. under the N.R.C.-Academy of Sciences, U.S.S.R. exchange scheme and returned to Moscow to defend his Candidate dissertation is coming back to U.B.C. for a year as a Research Fellow . . . . DR. N. H. THYER who received his Ph.D. in Meteorology from the University of Washington and has spent a year with the Meteorological Department in Ghana is joining the Department as Assistant Professor. His research affiliation will be with the Institute of Oceanography . . . . DR. R. D . RUSSELL is returning after a year's absence in Toronto to become a Full Professor in the newly created Department of Geophysics whose members will continue to be in close contact with the Department of Physics and will take part in the teaching program of the Department of Physics. DR. A. J . SURKAN is leaving to accept a position with I.B.M. in New York . . . . Attendance at meetings: R. BARRIE and J . GRINDLAY attended the Conference on Lattice Dynamics in Copenhagen; F. L. CURZON and R. NODWELL attended the International Conference on Ionization Phenomena in Gases in Paris and visited a number of laboratories active in plasma physics research in England and on the continent; M. BLOOM attended the Gordon Research Conference on N.M.R.; R. STEWART spent three months visiting research Institutes in the U.S.S.R. under the N.R.C.-Academy of Sciences, U.S.S.R. exchange scheme; B. L. W H I T E and G . M VOLKOFF attended the International Conference on Nucléon Structure at Stanford; R E. BURGESS attended the URSI meeting in Tokyo; W. OPECHOWSKI attended the International Colloquium on Neutron Diffusion and Diffraction in Grenoble, France; a large number of staff members attended the IUGG meetings in Berkeley, and the C.A.P.-A.P.S. meetings in Edmonton; G. M. VOLKOFF was one of the Canadian delegates to the IUPAP General Assembly in Warsaw. A T THE METEOROLOGICAL BRANCH, DEPARTMENT OF TRANSPORT . . . . At the 4th Congress of the World Meteorological Organization held in Geneva, Switzerland, April 1-27, Canada's Principal Delegate was DR. P. D . MCTAGGART-COWAN, Director of the Meteorological Branch . . . . Other members of the Branch who were delegates were C. C. BOUGHNER, Chief of the Climatology Division, F. W. B E N U M , Chief of the Forecast Division and L. T . C A M P B E L L , Liaison Meteorologist . . . . Also attending the Congress was DR. W. L. GODSON of the Met. Branch representing the International Union of Geodesy and Geophysics . . . . D R . A N D R E W THOMSON, former director of the Met. Branch and now retired was welcomed at the Congress as a CANADIAN PHYSICISTS 37 Counsellor. During the sessions Dr. McTaggart-Cowan was Chairman of the important Finance Committee, whose deliberations required long hours of concentrated effort. The Director was elected to the presidency of Regional Association IV (North and Central America) succeeding Dr. F. W. Reichelderfer, Chief of the United States Weather Bureau. As president of Region IV, Dr. McTaggart-Cowan became a member of the Executive Committee and remained in Geneva after the conclusion of Congress to attend this week-long Committee meeting. From Geneva, Dr. McTaggart-Cowan continued on to Bracknell, England, where he represented Canada at the Commonwealth Meteorologists' Conference held from May 6 to 10 . . . . M. B. DANARD has completed his course of studies at the University of Chicago for a Ph.D. degree in Meteorology. His field of research while at the University concerned the effects of latent heat on the energetics of cyclone development. On return to the Atmospheric Research Section in the Meteorological Branch, Department of Transport, he will be carrying out investigations on general circulation problems . . . . DR. P. J. RAO recently of Andhra University, Waltair, India, has been awarded a one-year N.R.C. postdoctorate fellowship to be taken in the research section of the Meteorological Branch. Dr. Rao will be reporting around the first of September to do research on the energy budget. . . . . The untimely death of D R . G . N. is deeply regretted . . . . D R . G . A. H A R R O W E R has been promoted to Professor, D R . W . R. C O N K I E to Associate Professor, and D R . H . C . E V A N S to Assistant Professor. D R . H . W . HARKNESS has retired from part-time teaching duties. MR. J. R. A L L E N has returned from the University of Manchester to resume his teaching duties . . . . New appointments are as follows: MR. V. A. H U G H E S as Associate Professor, DR. R. C . R O E D E R as Lecturer, and M R . RICHARD B U T L E R as Senior Instructor. Mr. Hughes was a Principal Research Officer at the D.S.I.R. Radio Research Station, Slough, England. Dr. Roeder has relinquished his position as Assistant Professor of Astronomy at the University of Illinois to return to Canada. Mr. Butler has been working as a graduate student in radio astronomy at Queen's. The Department of Physics will henceforth be responsible for courses and research in Astronomy . . . . D R . W . R. CONKIE worked during the summer at the Brookhaven National Laboratory. DR. H. C . E V A N S was a member of the accelerator group at A.E.C.L., Chalk River during the summer . . . . DR. S. SANTHANAM completed his work for the doctorate in nuclear physics and joined the staff of Loyola College, M o n t r e a l . . . . MR. R. G. JOHNSON who completed his work for the M.Sc. degree under Professor B. W. Sargent in 1962 has been awarded the Rutherford Scholarship A T Q U E E N ' S UNIVERSITY WHYTE 38 PHYSICS IN CANADA of the Royal Society of London; he will continue his work in high energy physics at the University of Liverpool. AT N.R.C M R . F . L . W . M C K I M , Assistant Director since 1 9 5 7 of the Division of Administration and Awards, has been appointed Director of the Division, a position relinquished by Dr. F. T. Rosser, Vice-President (Administration) . . . . D R . D . W . R. M C K I N L E Y , Associate Director of the Radio and Electrical Engineering Division since 1960, has been appointed Director of the Division, succeeding Dr. B. G. Ballard, recently appointed President of NRC . . . . DR. H. R. SALLANS, Acting Director of the Prairie Regional Laboratory since the death in August, 1962, of Dr. G. A. Ledingham, has been appointed Director of the Laboratory . . . . D R . W . G. SCHNEIDER, Head, General Physical Chemistry Section, has been appointed Director, Division of Pure Chemistry. Dr. Schneider fills the vacancy created by the appointment of Dr. Leo Marion as Vice-President (Scientific) of the Council. A T T H E UNIVERSITY OF WATERLOO . . . . The News Editor regrets any embarrassment caused by the incorrect news item published in the Summer issue. The correct information (directly from the source) follows . . . . The Faculty of Science is now six years' old and has been expanding rapidly. To take care of this year's influx of students the Department of Physics has increased its teaching staff by 25 per cent with the addition of the following members . . . . D R . R. R. HAERING, formerly of I.B.M., has joined the Department as Professor of Physics . . . . D R . P. C . EASTMAN of the Defence Research Board has been appointed Assistant Professor . . . . M R . J. D. LESLIE is returning to Waterloo as Assistant Professor after completing his Ph.D. programme at the University of Illinois . . . . MESSRS. J. M . CORBETT and J. R. RICHARDSON will be temporary lecturers for the year 1963-64 . . . . In the past year four students have received their M.Sc. and are all continuing work towards Ph.D. degrees. They are LANCE HODGES and JACK KRUUV, who are now studying at the University of Western Ontario; STANLEY WILSON, who has returned to the University of Saskatchewan; and FELIX KAPRON, who is remaining at Waterloo. A T T H E UNIVERSITY OF TORONTO . . . . D R . J. M. DANIELS has been elected Fellow of the Royal Society of Canada . . . . DR. L. E. H. TRAINOR and D R . G . D . GARLAND formerly of the University of Alberta and D R . R. LIST formerly of the Swiss Federal Institute for Snow and Avalanche Research, Davos, Switzerland, have been appointed Professors of Physics . . . . D R . D. A. L . PAUL of the Royal Military College, Kingston is to join the staff as Associate Professor on January 1, 1964 . . . . D R . R. E . PUGH who has been working at Iowa State University has been appointed Assistant Professor and D R . D . R. MASSON CANADIAN PHYSICISTS 39 previously at Imperial College, London has been appointed Lecturer and Research Assistant . . . . D R . E. CORINALDESI of the Institute Nazionale di Fisica Nucleare, Pisa, Italy will be Visiting Professor at Toronto for four and one half months beginning September, 1963; DR. A. DANIELIAN of King's College, London will be Visiting Assistant Professor for the session 1 9 6 3 - 6 4 . . . . A. C. H . H A L L E T T , J . N . P. H U M E , D . G . IVEY, and K. G . M C N E I L L have been promoted from Associate to Full Professor; R E. A Z U M A , G . M . GRAHAM, H . P. G U S H , and J . D . P R E N T I C E from Assistant to Associate Professor; H . S. CAPLAN from Research Associate to Assistant Professor . . . . Four Ph.D.'s in Physics were awarded at the Spring Convocation. A. F. EISAHARTY (Geophysics) has returned to the United Arab Republic. P. P. M. M E I N C K E (Solid State Physics) is now at the Royal Military College, Kingston. V. F. SEARS (Molecular Physics) has been awarded an N . R . C . post-doctoral scholarship and will work at Oxford University. D. E. SMYLIE (Electromagnetic Excitation of the Chandler Wobble) is now a post-doctoral student at M.I.T. and will be returning to Toronto at the beginning of 1964. A L ' U N I V E R S I T É LAVAL . . . . M . J E A N - D E N I S C A R E T T E du laboratoire de recherches en Physique atomique du Dr. Larkin Kerwin, est le récipiendaire d'un bourse Ford pour l'année ' 6 3 . . . . L E D R . LARKIN K E R W I N s'est rendu à San Francisco pour organiser et présider le symposium sur les collisions en spectrométrie de masse, organisé par L'A.S.T.M L E D R . K E R W I N a été nommé membre du comité des bourses du Conseil National des Recherches . . . . L E D R . PAUL M A R M E T assistait à la sixième (6 e ) conférence internationale sur les phénomènes d'ionisation dans les gaz, tenue à Paris cet été. Il a aussi présenté une communication intitulée "Comparison of collision cross sections associated with excited and ground state ions," at the "3E International Conference on the physics of electronc and atomic collisions" tenue à Londres . . . . L E D R . CLAUDE D E L I S L E se rendra en septembre à l'Université de Rochester pour y poursuivre des recherches post-doctorales pendant un an . . . . M . L E PROFESSEUR CLAUDE F R É M O N T a présenté une communication au congrès de l'ACEF (l'association canadienne des éducateurs de langue française), qui a eu lieu à Vancouver et dont le thème était "L'enseignement audio visuel" . . . . M . L E PROFESSEUR F E R N A N D B O N E N F A N T a été nommé président des bibliothèques de l'Universite Laval . . . . L E D R . M . HUSSAIN du Laboratoire du Professeur John Hasted du Imperial College à Londres, est boursier postdoctoral du Conseil National des Recherches à l'Université Laval pour 1 9 6 3 - 6 4 et il travaille au Laboratoire de Physique atomique et moléculaire. 40 PHYSICS IN CANADA A T T H E UNIVERSITY OF W E S T E R N ONTARIO . . . . R . J. UFFEN, Principal of University College, was appointed to the Defence Research Board and to the National Research Council in April . . . . Among graduates receiving degrees at the Spring Convocation were: MARGOT R . ROACH, P h . D . in Biophysics; M . B . B E L L , M.Sc. in Physics—continuing graduate studies in radio astronomy at the University of Toronto; R . W . JOHNSTON, M . S C . in Physics—joined the staff of the Research and Development Laboratories, Northern Electric Company, Ottawa; G . J . I R W I N , M . S C . , in Geophysics—joining staff of Physics Department at O . A . C . in Guelph; P . D . N E W B E R R Y , M . S C . in Biophysics; M . H . SHEREBRIN, M . S C . in Biophysics . . . . N . R . C . Overseas post-doctoral fellowships were awarded to H . E . T U R N E R , to continue studies in micrometeorology at C S I R O in Australia, and to R . A . W E N T Z E L L for further studies at the University of Durham in magnetohydrodynamics . . . . Recent promotions in the Department of Physics: R . W . NICHOLLS to Senior Professor; P . A . FRASER and D . R . H A Y to Professor; C . M . CARMICHAEL, H . I . S. FERGUSON and E . H . TULL to A s s o c i a t e Profes- sor; R . C . M U R T Y to Assistant Professor; and W . R . Jarmain to Research Associate and Lecturer . . . . J . H . BLACKWELL has been promoted to Senior Professor in the Dept. of Pure and Applied Mathematics, and A . E . B E C K to Associate Professor and Head of the Dept. of Geophysics . . . . D . R . MOORCROFT has been appointed Assistant Professor in the Dept. of Physics . . . . J . T A L M A N has been granted leave of absence from the Dept. of Pure and Applied Mathematics to work at Davis College, U . of California . . . . D R . G . V . M A R R (Lecturer in Physics, University of Reading), DR. B. BROCKLEHURST (Lecturer in Chemistry, University of Sheffield) and D R . G . R . H E B E R T (Assistant Professor, St. Francis Xavier University) were research visitors in the Physics Department during the Summer . . . . R . W . NICHOLLS attended the A G A R D symposium in London (Eng.) in April . . . . P . A . FRASER and N . A . DOUGHTY attended the International Symposium on Ionization Phenomena in Paris in July, and the International Conference on the Physics of Electronic and Atomic Collisions in London (Eng.) in July . . . . Those attending and presenting papers at the I U G G meetings in Berkeley in August were C . M . CARMICHAEL, P . A . FORSYTH, D . R . H A Y , G . F . LYQN and R . W . NICHOLLS from the Physics Department, and A . E . B E C K , R . M E R E U , R . J . U F F E N and T . U L R Y C H from the Department of Geophysics . . . . D. R. HAY also presented a paper at the Radio Meteorology Symposium in Tokyo and attended sessions of U R S I there . . . . P . A . FORSYTH attended the Second C I G - I Q S Y Assembly in Rome in March. George Neilson Whyte 13, 1963, George Neilson Whyte died in Ottawa after a six-month illness. Late in his 39th year, he had recently been promoted to Professor of Physics at Queen's University, Kingston and was at the peak of his career. Neil Whyte was a keen observer of the world in which he found himself. Quick to uncover hypocrisy and humbug, he was no cynic, but enjoyed both the people and the things around him. Indeed, few have come to better terms with their environment, both human and natural. He loved his native city of Ottawa, loved to walk in it, photograph it, watch it change and grow. No less did he love his University, Queen's, where first he went as a student in 1942. When he graduated four years later he led his class in Applied Science, was awarded the Medal in Physics, the Governor-General's Medal and a Shell Oil Graduate Fellowship. The following year he obtained an M.Sc. under the direction of Professor J. A. Gray. In May of 1947 he left for Princeton where the next four years were equally successful. He was awarded a Procter Fellowship, the most coveted fellowship bestowed in Physics, and went on to do a thesis on Cosmic Rays, working with Professor George T. Reynolds. In order to obtain burst data near the geomagnetic equator, he spent a summer in the Pacific flying balloons from the deck of the USS Norton Sound. After obtaining an A.M. and a Ph.D. from Princeton, he remained there as an instructor for another year before joining the staff of the National Research Council of Canada in 1951. There, working with the X-rays and Nuclear Radiations Section of the Applied Physics Division, he soon became interested in the physics of radiation dosimetry. In conjunction with his colleagues at N.R.C. he made extensive contributions to the field in a long series of papers written in the years 1951-58. This work brought him an enviable international reputation which was further enhanced with the publication in 1959 of his book "The Principles of Radiation Dosimetry". Successful though he was in this phase of his career, a lifelong interest in teaching, which had been stimulated anew by a year at Queen's in 1956-57, led him to return there permanently as an Associate Professor ON SATURDAY, APRIL 42 PHYSICS IN CANADA in 1958. At Queen's he was able to continue his contributions to dosimetry through his membership in the committees of the International Commission on Radiological Units and Measurements and of the U.S. National Committee on Radiation Protection and Measurements. Nevertheless, his main interest from now on was to be in the teaching of physics, a pursuit for which he was admirably fitted. At the time of his death he was engaged in writing a textbook on the laboratory teaching of Nuclear Physics. Neil Whyte was quiet and unassuming by nature, so that few, even of his close friends, knew of the totality of his accomplishments; precise and logical by training, few ever caught him with an irrational or inconsistent point of view. Just as he valued his own privacy, so he respected that of others. Yet he was no recluse. Remembering the distraction caused by otherwise insignificant mannerisms of his own teachers, he once staggered his students at Queen's by having them fill in a questionnaire, which among other things, asked them to fist any of his irritating mannerisms, or other deficiencies in his presentation. He took a keen interest in the cultural and political life of Canada and it was always a pleasure to discuss these things with him. At such times, his calm outlook, natural insight and kindly sense of humor shone through vividly, and it was a rare occasion when one's own ideas were not clarified. In recent years his principal hobby was photography. It was characteristic of Neil, though not of amateur photographers in general, that his rare showings of transparencies always left his viewers hoping for more. It is possible that he never took any bad shots, but it is a good deal more likely that the mediocre ones were ruthlessly weeded out. If it is ever possible to sum up a person in one word, that word for Neil Whyte would probably be consideration. At no time was this consideration for others more evident than during his final unsuccessful battle with a brain cancer. His too early death is a grievous loss to his family, his friends, to Queen's and to Canada. J. C . D . MILTON THE G. N. WHYTE MEMORIAL PRIZE A prize is being set up in memory of the late Professor G. N. Whyte. It will be awarded annually to an outstanding physics student at Queen's University. Anyone interested in contributing to the endowment of this prize should get in touch with J. C. D. Milton, Physics Division, Chalk River Nuclear Laboratories, Chalk River, Ontario. Letters to the Editor Dear Sir: In the Spring issue of "Physics in Canada" Capius declared that the physicist as such is not a "measurer" but that "this lowly distinction belongs, of course, to the engineer. The true physicist 'measures' only as a means to an end". These two sentences are too clear to be merely bad phrasings. They are the deliberate expression of misinformed and bigoted ideas. It seems to me that it is evident that no one, be he engineer, tailor or bookmaker measures just for the pleasure of it. Paragraphs could be written tearing apart the bizarre ideas of the above mentioned gentleman, but the constructive thing to do is to take the positive approach and explain what the engineer is. The engineer must have a discipline that is not required of the man engaged in pure scientific research. He cannot content himself with the probing of nature and the accepting of whatever he finds. He must confine himself to the specific problem at hand and must build a practical solution taking into account such factors as time, cost, and provision for future modification. An engineer cannot be content with being qualified only in the technical sense. He must also be adept at the organization of a task and the "man management" of others also responsible in some way for its accomplishment. An engineer able to design but not able to supervise installation and servicing would be of limited use. The physicist has not the same public responsibility as the engineer. Much is made of the responsibility of the medical profession (which is great) however one must admit that the doctor's mistake will usually affect but one person at a time. A mistake on the part of the engineer will have much farther reaching consequences as is witnessed by the Quebec Bridge disasters and the burst dam in southern France two years ago, as well as by the crashes of the first Comet jetliners. The engineer, perhaps more than any other member of our society, holds lives in his hands. The engineer, then, is a man of many hats. As well as being a man of science, he must be a businessman, an efficiency expert, a cost accountant, sometimes a salesman and often a diplomat. The engineers among the members of the C.A.P. were no doubt hurt, as I was, by the unthinking remarks of the physicist in the spring issue. It is to be hoped that these few paragraphs will contribute to a better understanding that will lead to what can only be a fruitful partnership. (Sgd) WILSON PRICE April 25, 1963 Faculté des Sciences Université Laval Dear Sir: Reading the article "Applied Physics" by Dr. Howlett in the Spring issue of P.I.C. I found myself agreeing with everything he said, except what he said about what I said. I believe some of the differences are only apparent, and arise 44 PHYSICS IN CANADA only from differences in the definitions of terms between us. Perhaps I may be allowed a few words to try to clarify what I was trying to say. To categorize the RCA Victor Research Laboratories simply as a research-forprofit contracting outfit is convenient (and true in some measure) but to do so is to miss a major point of my essay. This was, that during those years contracting was the only way a Canadian electronics company was able to afford research. The basic aim of the research group—to contribute eventually to new and improved company products—was inevitably warped somewhat by contract terms, but was always there. Over the past year and a half, with the government research assistance programs, conditions have been changing everywhere for the better and, to the extent that contract seeking becomes unnecessary, the assistance programs can be judged to succeed. I agree with Dr. Howlett that defence contracting as a basis for applied research leading to new commercial products is not the most efficacious or most economic means—measured in terms of output per year, output per dollar, or output per scientist or engineer. I still stand by my remark that a company management will be disappointed if it attempts to judge the value of its scientific research group solely, or even primarily, by what new products it has invented, shocking as it may seem. But it must be taken in the context of the size of company I am talking about, and my definition of "research", to be understood. The real determinant of a company's effectiveness in introducing new products is its development organization and, secondarily, its marketing organization. In development is also where the major part of the cost is. (I have an idea that Dr. Howlett has included "Development" in his definition of "applied physics".) The point is that ideas are everywhere. We can't keep up with them. The present rate of growth of science and technology is such that the role of the industrial scientific research group is becoming more a role of processing new information—of understanding it, interpreting it, channelling it to the needs at hand (in, of course, an enlightened and original way)—more than strictly inventing. To clarify the relation between the different levels of scientific and engineering effort in an industrial research and development organization would require much more space than I can be allowed here, but I hope that I can accomplish it before long to my own and everyone else's satisfaction. The impressive record of the Applied Physics Division of the NRC in generating ideas which have been exploited into new commercial products seems to belie what I just said above. But it must be remembered that the situation in which you invent something, and then search the world until you find a sponsor to exploit it, differs in an essential respect from the usual industrial research situation. The research laboratory of the individual industry is almost the inverse case. (Sgd) April 19, 1963 Director, Solid State Physics Laboratory, R.C.A. Victor Company, Montreal R . W . IACKSON Books The Many-Body Problem—Lectures from the first Bergen International School of Physics, edited by CHRISTIAN FRONSDAL, N E W York, 1 9 6 2 . W . A . Benjamin, Inc. Pp. 310. $9.75. Quantum Theory of Many-Particle Systems. By L . VAN HOVE, N. M . H U G E N P. HOWLAND, New York 1961. W. A. Benjamin, Inc. Pp. 249. HOLTZ AND L . $3.95. BENJAMIN INC. has done a real service to physics through its paperback editions of lecture notes and reprint collections. While disappointments like Feynman's Quantum Electrodynamics have occurred in its Frontiers in Physics series, real excellence has also been achieved in books such as Quantum Statistical Mechanics by Kadanoff and Baym. Benjamin has used paperback binding and photo-offset printing in an attempt to keep costs down and to speed up publication of topical material. To a considerable extent this purpose has been achieved. Still $9.75 for the Bergen lectures seems like a lot of money for a paperback, whatever its contents. The theory of many-body systems has undergone a very extensive development during the past decade and some notable results have been achieved. In particular, conventional perturbation theory has been subjected to a good deal of critical analysis, and important modifications have been introduced to make it applicable to a wide variety of many-body problems, e.g. to problems in transport theory and statistical mechanics. In this development, the language of second quantization has proved invaluable and a number of important techniques have been borrowed from the theory of quantized fields. Even in the striking case of superconductivity, where conventional perturbation theory breaks down entirely, the language of second quantization has proven the natural language of description. The modern literature in low temperature and solid state physics, and to some extent in nuclear physics, employs this language so extensively that no serious student in these fields can profitably avoid exposure to it. From this point of view, the Bergen lecture notes are certainly useful. The 35 page introduction to the N-Body Problem by Falkoff makes the subject accessible, at least superficially, to any student of modest talent who has a good background in conventional quantum mechanics. Falkoff's introduction is followed by a very clear and concise account of the BCS theory of superconductivity by L. N. Cooper. Ambegaoker and Kadanoff then show how the BCS theory can be made gauge invariant. As a consequence of gauge invariance, superconductors have, in addition to the quasi-particle excitations of BCS, collective excitations which can be induced by an electric field. An excellent account of the scattering of electrons by impurities in both normal and superconducting metals is given by Rickayzen. Short chapters by Mittag on the dense electron gas and by Stephen on the diamagnetic susceptibility of an electron gas, round out the section on solid state and low temperature studies. This section is followed by a series of 4 articles on the nuclear many-body problem. In a lecture entitled "Properties of the Nuclear Surface," Professor 46 PHYSICS IN CANADA Rosenfeld manages, in addition to covering the topic at hand, to give a concise, but lucid, account of several general methods or devices, e.g. the variational principle and the self consistent field, the density matrix, and the Thomas-Fermi method. The language of second quantization is used by G. E. Brown in an extensive discussion of collective nuclear motions, and by J. S. Bell for a clear exposition of superfluidity in nuclear matter. The final lecture in this section is a review by Bell of the problem of hard core potentials in perturbation theory. The Bergen lectures end with four contributions of rather varied nature. A. Katz discusses the calculation of the moment of inertia of a many-fermion system, A. J. Glick discusses the properties of the linear-response function from which several important properties of the many-body system can be derived, and R. Balian discusses the structure of the t-matrix of Brueckner and of the canonical transformation of Bogoliubov. Perhaps the most interesting contribution is the article of Katz on the analytic structure of perturbation theory in which he points out that, by analytic continuation, a perturbation series such as the Goldstone expansion may have significance far beyond its circle of convergence. Finally, it might be remarked that the Bergen lectures are prefaced with a short review of their contents by editor Christian Fronsdal. In contrast to the Bergen lectures, the Quantum Theory of Many-Particle Systems is a reprint collection. Specifically, it is a reprint collection on the fundamental contributions of Van Hove and Hugenholtz on the perturbation theory of many particle systems. It is necessarily very partial to the work of Van Hove and Hugenholtz, and while their formulation of perturbation theory in terms of the resolvent operator has some distinct advantages, the alternative formulation in terms of the development operator has been largely adopted in the current literature. Moreover, it is rather vague as to its general purpose and represents a rather mixed bag of items. Nevertheless, the collection is a useful reference work for the serious student of perturbation theory in the quantum mechanics of many-body systems. The book begins with an expanded version of an MIT report by Van Hove entitled "Interactions of Elastic Waves in Solids". This article gives an excellent review of the classical and quantum theories of elastic solids, and demonstrates the use of modern perturbation methods for handling anharmonic effects. In particular, Van Hove discusses at some length neutron scattering at 0° K, and three basic papers on neutron scattering and crystal dynamics are reprinted from the Physical Review. Unfortunately, the reduction of page size from the Physical Review to book form results in print which is too small for comfortable reading. For this reason, the reader is likely to turn to the reprints from Physica with a real sense of relief. Van Hove's two contributions on "Energy Corrections and Persistent Perturbation Effects in Continuous Spectra", in which he discusses at length the "cloud" and "self energy" effects in many-body perturbation theory, are of more general interest to the field theorist than to the solid state physicist The discussions are very good, however, and Van Hove outlines the resolvent method in perturbation theory. This method is taken up in the classic paper of Hugenholtz which makes extensive use of the diagrammatic analysis of Feynman to discuss the quantum mechanics of many-body systems at zero temperature. Particular attention is paid to the problem of separating out properly extensive thermodynamic quantities in the perturbation treatment. The method is applied to the Fermi gas model of heavy nuclei in a subsequent reprint of Hugenholtz and the collection ends with an important paper of Hugenholtz and Van Hove on single particle energies in an interacting Fermi gas. In this paper, it is shown that the single particle concept for an interacting Fermi gas at zero degrees has meaning only for those particles whose momenta are approximately equal to the Fermi momentum. L . E . H . TRAINER University of Alberta BOOKS Meteorites. By BRIAN MASON. 47 John Wiley and Sons. Pp. 273. $7.95. of this book, authoritative information on these interesting bodies has been widely scattered through the literature. Both specialists and teachers of astronomy will welcome its appearance, though it is addressed more to the former. After some introductory chapters and a description of the external features of meteorites and their classification, the author discusses their mineralogy and internal structure in great detail. Physicists may find themselves somewhat intimidated by words like "enstatite" and "hypersthene", but they are no doubt necessary in a mineralogical discussion. A long chapter gives a critical discussion of the elemental composition of meteoritic matter. The various kinds of meteorite ages are considered briefly but thoroughly. The book concludes with a chapter on the origin of meteorites and one on tektites. Appendices discuss the chemical analysis of meteorites and give a complete list of meteorites of the United States. It appears that all specialists in the subject would want to have a copy of the book, and that it should be in the library of any department which teaches astronomy. D. M. H. UNTIL THE APPEARANCE NATIONAL RESEARCH COUNCIL, OTTAWA, ONTARIO, CANADA. DIVISION OF APPLIED PHYSICS invites applications for a Research Officer in the Division of Applied Physics. THE NATIONAL RESEARCH COUNCIL An interesting and challenging position is available in the field of neutron physics. The program covers research in neutron dosimetry, neutron spectra by proton recoil or time of flight methods, neutron-induced nuclear reactions and nuclear decay schemes. The improvement of standards in the field of neutron physics is entailed with particular reference to radioactive neutron sources, and thermal and fast neutron fluxes. The successful candidate will be expected to be able to undertake independent research in the field of neutron physics. QUALIFICATIONS: The applicant should have training and preferably some experience in nuclear or reactor physics. M.Sc. or Ph.D. degree required. INITIAL SALARY: Depending on qualifications. Enquiries should be addressed to the Director of the Division of Applied Physics, Building M-36, Montreal Road, National Research Council, Ottawa, Ontario. à RECENT A T O M I C PHYSICS: An Introduction Larkin Kerwin, Laval University, Quebec A broad and basic introduction to Atomic Physics, this vital new text provides an overview of modern physics for students majoring in science and engineering. It also serves as a convenient frame of reference for subsequent courses. 1963, 412 pp., $8.25 COMING SPRING 1964 INTRODUCTION T O ELECTRONICS For Students of Physics and Engineering Science Donald M.t.Hu Hunten, University of Saskatchewan, Saskatoon SPECTROSCOPY A N D MOLECULAR STRUCTURE Gerald W. King, McMaster University, Hamilton INTRODUCTION TO ELASTICITY Gerard Nadeau, Laval University, Quebec HOLT RINEHART AND WINSTON 833 Oxford Street, Toronto 18 OUR new RESEARCH CENTER in OTTAWA is working in the following fields: Electron Microscopy Solid-State Physics Polymer Physics Semiconductor Device Development & Design Microwave Antennae & Propagation C o m p u t e r Circuits Parametric Amplifiers Solid State Microcircuits Multiplex Communications Systems Design of Logic Circuits Microwave Communications Circuits. We invite enquiries f r o m applicants holding Ph.D. or Master Degrees in Physics, Engineering Physics, Electrical Engineering, Physical Chemistry. 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