A Richly Varied Life in Physics

Total Page:16

File Type:pdf, Size:1020Kb

A Richly Varied Life in Physics book reviews A richly varied life in physics A Tale of Two Continents: A worsening famine. Bram’s parents escaped Physicist’s Life in a Turbulent World too. His only sister and her husband refused by Abraham Pais to look for a hiding place, were deported and Princeton University Press: 1997. Pp. 511. did not return. The same fate befell George $35, £25 Uhlenbeck’s former assistant, Boris Kahn. H. B. G. Casimir Throughout his period in hiding, Pais 8 continued to do theoretical work, some of Abraham Pais is a well-known figure among which was later published. As far as I know, it today’s senior physicists. In the rather eso- had no lasting influence, but it must have teric group of theorists dealing with parti- been a great help in keeping up his morale. cles and fields, he ranks as one of the fore- One cannot but admire the way in which the most experts, especially on so-called weak young Pais kept up his spirits and how he interactions. But he is also an expert in a now writes about his experience. broader sense, as is borne out by his book After the war, Pais’s stay in Copenhagen Inward Bound: Of Matter and Forces in the lasted less than a year, during which he acted Physical World (Oxford University Press, as a kind of private secretary to Niels Bohr, 1986). This was preceded by “Subtle is the helping to prepare lectures. The friendships Lord” (OUP, 1982), a widely acclaimed biog- that Pais established in Denmark were con- raphy of Albert Einstein, and was followed firmed and extended on many later visits. by the biography Niels Bohr’s Times: In Pais writes of Bohr: “No other physicist, Physics, Philosophy and Polity (OUP, 1991). for that matter no one else, ever has stirred in No wonder Pais has been much in me feelings of such high respect and deep demand as a speaker and often called on to affection. He is my father figure. Only later help organize scientific meetings. Prospec- did I come to understand how fortunate I tive readers of his autobiography will there- have been to spend a period with Bohr that fore expect a richly varied story. They will was neither too short nor too long. Why not not be disappointed. too long? Because it can be dangerous for a Pais: theoretical physicist turned historian. In trying to give an idea of the rich con- young man in his formative years to spend tents, I shall not follow strict chronological too much time in the presence of a personal- Pais has done an enormous amount of order (neither does Pais). But five periods of ity as powerful as Bohr’s.” However that may travelling, as a tourist, as a visiting scientist his life can be distinguished: his youth until be, if Pais, following Einstein, ever had any and, more often, as a combination of the the end of the Second World War and of the misgivings about the interpretation of two. His trips have often involved moun- occupation of the Netherlands (1918–45); a quantum mechanics, they disappeared. He taineering: in 1960 he climbed Mont Blanc, brief stay in Copenhagen (1946); a career at became a staunch supporter of Bohr’s ideas and in 1962 the Matterhorn. With modern the Institute for Advanced Study in Prince- on phenomena and complementarity. equipment and fixed ropes, these climbs are ton (1946–63); a professorship at Rocke- In the autumn of 1946, Pais travelled to less difficult and dangerous than they were a feller University in New York (1963–88); the United States and settled in Princeton. century ago in the days of the pioneering and his emeritus professorship, with a desk Not everyone will agree with his views on the mountaineer Edward Whymper. But both in New York and another in Copenhagen American way of life, but his stories are are strenuous and a remarkable feat for any (from 1988 onwards). amusing. amateur over 40. The beginnings of the first period were At the Institute for Advanced Study he Scattered through the text are many uneventful. Abraham — Bram to his friends rose through the ranks, becoming finally a anecdotes and incisive remarks about — is the son of a Jewish schoolteacher father, full professor with tenure. Why then did he famous scientists. There are also sections on belonging to the Portuguese-Jewish (or choose in 1963 to move to New York? He world affairs — where, much to my Sephardic) community, whose ancestors states as his reason that he was afraid of surprise, Pais mentions the World Series settled in Amsterdam centuries ago. His becoming more and more of a manager baseball championship — and on the art of mother was a teacher as well and, although rather than a scientist. At that time, howev- writing a book. the family was not wealthy, it managed to get er, his best work in theoretical physics had But it is obvious that Pais, for all his by. Bram was a bright pupil, achieving high been done. At Rockefeller University we see multifarious interests and abilities, is, or grades with little effort. While at home he him change gradually into a historian of sci- was, primarily a hardworking and enthusi- adhered to the Jewish rites. He soon lost his ence. astic theoretical physicist. Time and time faith, but became interested in Zionism. As to his personal life, Pais has married again he mentions the problems he has Then came the war, Germany’s occupation three times. His first marriage lasted from worked on and recalls his students and col- of the Netherlands and the regime’s strin- 1956 to 1962. He is reticent but unembit- leagues. He started out with problems in gent anti-Jewish measures. tered about the separation and writes with quantum electrodynamics, which was then Pais just managed to obtain his doctorate true affection about his son, born in 1958, reaching the stage at which experimental before going into hiding. He was found but and about his daughter-in-law and grand- results could be predicted with surprising escaped by the skin of his teeth, thanks to the son. He is rather sarcastic about his second accuracy, although Pais never found the help of a plucky young woman who, armed marriage which lasted from 1976 to 1985: theory entirely satisfactory. with a letter from the German Nobel laure- “her running off was the best thing she had The bulk of his work deals with particle ate Werner Heisenberg, went to plead with a ever done for me”. Finally, in 1990, he finds physics — an entirely new branch of physics high-ranking Nazi official. All this took the ideal partner, about whom he writes with little contact with or influence on the place against the background of an ever with loving praise verging on adulation. physics of the first half of our century. Pais NATURE | VOL 387 | 26 JUNE 1997 865 Nature © Macmillan Publishers Ltd 1998 book reviews endeavours to explain at least the gist of its development, a development to which he himself made important contributions. Has he succeeded? I am not sure. That the treatment of the mathematics is rather sketchy does not matter for the professional physicist: one can always turn to Inward Bound and, if one wants to become a real expert, from there to one of several good textbooks. But has Pais given nonphysicists 8 an inkling of the reaction of physicists to the sensational news of charge parity violation? Can he convince authorities that it is worth spending thousands of millions to create a few extremely short-lived particles? Per- haps that is asking too much. No book is perfect. Although Pais is on the whole very readable and both instruc- tive and entertaining, he is sometimes a bit long-winded. Several sections, in particular those dealing with travel, could do with pruning, and some duplication might have been avoided. Pais himself recommends an index of subjects, but does not follow his own advice. But these minor shortcomings Bear essentials in no way detract from the value of this Conventional wisdom says you should never This is the latest in a series of popular books impressive book. come between a mother bear and her cubs. from Voyageur exploring the world of North H. B. G. Casimir is at De Zegge 7, 5591 TT Heeze, Inadvertently, Erwin A. Bauer did just that when American bears. In the above picture, one of The Netherlands. he fell asleep on a hiking trail in Grand Teton many fine photos in the book by Erwin and National Park in Wyoming. But the bears Peggy Bauer, a mother grizzly disciplines a ignored him and he survived to recount the tale surprised cub that has been wandering too far in the introduction to his book, Bears: Behavior, away. The author gives tips for capturing these Our flexible friends Ecology, Conservation (Voyageur Press, $35). elusive creatures on film. Cells, Embryos and Evolution: Towards a Cellular and the evolution of morphological novelty. Things are even less clear when we en- Developmental Understanding of Their grand theme is that the develop- counter the ‘priapulid problem’. The pria- Phenotypic Variation and mental systems of metazoa show “flexibility pulids, named after the eponymous Priapus Evolutionary Adaptability and robustness”, characteristics that may with his large male generative organ, are an by John Gerhart and Marc Kirschner enable mutations to produce significant entire phylum containing only 17 species that Blackwell Science: 1997. Pp. 642. changes in morphology without always being seem to have changed hardly at all since their £29.50, $64.95 disadvantageous.
Recommended publications
  • Dr. Abraham Pais Dr. Pais Was Born in Amsterdam on May 19, 1918. He
    Director's Office: Faculty Files: Box 25: Pais, Abraham, Permanent Member From the Shelby White and Leon Levy Archives Center, Institute for Advanced Study, Princeton, NJ, USA Dr. Abraham Pais Dr. Pais was born i n Amsterdam on May 19, 1918. He obtained his Doctor's Degree at the University of Utrecht in 1941. During the years of the occupation, he continued to work under conditions of great difficulty, and the year after the war he was an assistant at the Insti- tute of Theoretical Physics in Copenhagen, In the fall of 1946, Dr. Pais came to the Institute for Advanced Study. ~he record of Dr. Pais' work in the last decade is almost a history of the efforts to clar ify our understanding of basic atomic theory and of the nature of elementary particles. Pais first proposed the compensa- tion theories of elenientary particles, and much of his work tas been devoted. to exploring the success and limitations of these theories, and indicating the radical character of the revisions which will be needed before they can successfully describe the sub-atomic world. Pais has made important contri- butions to nuclear theory and to electrodynamics . He is one of the few young theoretical physicists who within the last decade have enriched our understanding of physics. Statement prepared by J . R. Oppenheim.er Enclosure: Bibliography of papers by Dr. Pais Director's Office: Faculty Files: Box 25: Pais, Abraham, Permanent Member From the Shelby White and Leon Levy Archives Center, Institute for Advanced Study, Princeton, NJ, USA PUBLICATIONS OF ABRAHllJ~ PAIS The ener gy moment um tensor in projective r elativity theor y, Physi ca 8 (1941), 1137-116o .
    [Show full text]
  • CP Symmetry Violation: the Search for Its Origin.” Reviews of Modern Physics 53 (1981) 373–383
    CP SYMMETRY VIOLATION 1 Jonathan L. Rosner The symmetry known as CP is a fundamental relation between matter and antimatter. The discovery of its violation by Christenson, Cronin, Fitch, and Turlay (1964) has given us important insights into the structure of particle interactions and into why the Universe appears to contain more matter than antimatter. In 1928, Paul Dirac predicted that every particle has a corresponding an- tiparticle. If the particle has quantum numbers (intrinsic properties), such as electric charge, the antiparticle will have opposite quantum numbers. Thus, an electron, with charge −|e|, has as its antiparticle a positron, with charge +|e| and the same mass and spin. Some neutral particles, such as the photon, the quantum of radiation, are their own antiparticles. Others, like the neutron, have distinct antiparticles; the neutron carries a quantum number known as baryon number B = 1, and the antineutron has B = –1. (The prefix bary- is Greek for heavy.) The operation of charge reversal, or C, carries a particle into its antiparticle. Many laws of physics are invariant under the C operation; that is, they do arXiv:hep-ph/0109240v2 15 Oct 2001 not change their form, and, consequently, one cannot tell whether one lives in a world made of matter or one made of antimatter. Many equations are also invariant under two other important symmetries: space reflection, or parity, denoted by P, which reverses the direction of all spatial coordinates, and time reversal, denoted by T, which reverses the arrow of time. By observing systems governed by these equations, we cannot tell whether our world is reflected in a mirror or in which direction its clock is running.
    [Show full text]
  • J. Robert Oppenheimer Papers [Finding Aid]. Library of Congress
    J. Robert Oppenheimer Papers A Finding Aid to the Collection in the Library of Congress Manuscript Division, Library of Congress Washington, D.C. 2016 Revised 2016 June Contact information: http://hdl.loc.gov/loc.mss/mss.contact Additional search options available at: http://hdl.loc.gov/loc.mss/eadmss.ms998007 LC Online Catalog record: http://lccn.loc.gov/mm77035188 Prepared by Carolyn H. Sung and David Mathisen Revised and expanded by Michael Spangler and Stephen Urgola in 2000, and Michael Folkerts in 2016 Collection Summary Title: J. Robert Oppenheimer Papers Span Dates: 1799-1980 Bulk Dates: (bulk 1947-1967) ID No.: MSS35188 Creator: Oppenheimer, J. Robert, 1904-1967 Extent: 76,450 items ; 301 containers plus 2 classified ; 120.2 linear feet Language: Collection material in English Location: Manuscript Division, Library of Congress, Washington, D.C. Summary: Physicist and director of the Institute for Advanced Study, Princeton, New Jersey. Correspondence, memoranda, speeches, lectures, writings, desk books, lectures, statements, scientific notes, and photographs chiefly comprising Oppenheimer's personal papers while director of the Institute for Advanced Study but reflecting only incidentally his administrative work there. Topics include theoretical physics, development of the atomic bomb, the relationship between government and science, nuclear energy, security, and national loyalty. Selected Search Terms The following terms have been used to index the description of this collection in the Library's online catalog. They are grouped by name of person or organization, by subject or location, and by occupation and listed alphabetically therein. People Bethe, Hans A. (Hans Albrecht), 1906-2005--Correspondence. Birge, Raymond T. (Raymond Thayer), 1887- --Correspondence.
    [Show full text]
  • James Chadwick and E.S
    What is the Universe Made Of? Atoms - Electrons Nucleus - Nucleons Antiparticles And ... http://www.parentcompany.com/creation_explanation/cx6a.htm What Holds it Together? Gravitational Force Electromagnetic Force Strong Force Weak Force Timeline - Ancient 624-547 B.C. Thales of Miletus - water is the basic substance, knew attractive power of magnets and rubbed amber. 580-500 B.C. Pythagoras - Earth spherical, sought mathematical understanding of universe. 500-428 B.C. Anaxagoras changes in matter due to different orderings of indivisible particles (law of the conservation of matter) 484-424 B.C. Empedocles reduced indivisible particles into four elements: earth, air, fire, and water. 460-370 B.C. Democritus All matter is made of indivisible particles called atoms. 384-322 B.C. Aristotle formalized the gathering of scientific knowledge. 310-230 B.C. Aristarchus describes a cosmology identical to that of Copernicus. 287-212 B.C. Archimedes provided the foundations of hydrostatics. 70-147 AD Ptolemy of Alexandria collected the optical knowledge, theory of planetary motion. 1214-1294 AD Roger Bacon To learn the secrets of nature we must first observe. 1473-1543 AD Nicholaus Copernicus The earth revolves around the sun Timeline – Classical Physics 1564-1642 Galileo Galilei - scientifically deduced theories. 1546-1601, Tycho Brahe accurate celestial data to support Copernican system. 1571-1630, Johannes Kepler. theory of elliptical planetary motion 1642-1727 Sir Isaac Newton laws of mechanics explain motion, gravity . 1773-1829 Thomas Young - the wave theory of light and light interference. 1791-1867 Michael Faraday - the electric motor, and electromagnetic induction, electricity and magnetism are related. electrolysis, conservation of energy.
    [Show full text]
  • Wolfgang Pauli 1900 to 1930: His Early Physics in Jungian Perspective
    Wolfgang Pauli 1900 to 1930: His Early Physics in Jungian Perspective A Dissertation Submitted to the Faculty of the Graduate School of the University of Minnesota by John Richard Gustafson In Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy Advisor: Roger H. Stuewer Minneapolis, Minnesota July 2004 i © John Richard Gustafson 2004 ii To my father and mother Rudy and Aune Gustafson iii Abstract Wolfgang Pauli's philosophy and physics were intertwined. His philosophy was a variety of Platonism, in which Pauli’s affiliation with Carl Jung formed an integral part, but Pauli’s philosophical explorations in physics appeared before he met Jung. Jung validated Pauli’s psycho-philosophical perspective. Thus, the roots of Pauli’s physics and philosophy are important in the history of modern physics. In his early physics, Pauli attempted to ground his theoretical physics in positivism. He then began instead to trust his intuitive visualizations of entities that formed an underlying reality to the sensible physical world. These visualizations included holistic kernels of mathematical-physical entities that later became for him synonymous with Jung’s mandalas. I have connected Pauli’s visualization patterns in physics during the period 1900 to 1930 to the psychological philosophy of Jung and displayed some examples of Pauli’s creativity in the development of quantum mechanics. By looking at Pauli's early physics and philosophy, we gain insight into Pauli’s contributions to quantum mechanics. His exclusion principle, his influence on Werner Heisenberg in the formulation of matrix mechanics, his emphasis on firm logical and empirical foundations, his creativity in formulating electron spinors, his neutrino hypothesis, and his dialogues with other quantum physicists, all point to Pauli being the dominant genius in the development of quantum theory.
    [Show full text]
  • Ben D'amore TAH – Year 3 September 14, 2011 My Interest In
    Ben D’Amore TAH – Year 3 September 14, 2011 My interest in learning more about Robert Oppenheimer came about not from our class but from reading Malcolm Gladwell’s book Outliers: The Story of Success. Gladwell mentions how Oppenheimer, due to his relatively privileged upbringing, was able to learn the skills necessary to not only be a leader but to be able to convince his advisors to not kick him out of the University of Cambridge after he tried to poison one of his professors! My knowledge of Oppenheimer was limited to his role in developing the atomic bomb, so this story inspired me to find a biography about him. The most thorough biography was written by a fellow physicist, Abraham Pais, during the late 1990’s. Pais worked with Oppenheimer from just after World War I until Oppenheimer’s death in 1967. Pais’ book, J. Robert Oppenheimer: A Life, was published posthumously in 2006. The book was about 85 percent complete when Pais died, so Robert Crease, a historian of physics, completed the book. The biography focuses on Oppenheimer’s life and career both before and after his time developing the atomic bomb in Los Alamos. While his early career shows signs of his talents towards the new developments in the field of physics, the real value of the book lies in Pais and Crease’s examination of the loss of Oppenheimer’s security clearance in the midst of the Red Scare in the 1950’s. Pais begins the book with his first meeting with Oppenheimer in 1946. Pais had just recently left Europe, where (as a Jew) he remained hidden from Hitler and Germany during the war.
    [Show full text]
  • Sam Treiman Was Born in Chicago to a First-Generation Immigrant Family
    NATIONAL ACADEMY OF SCIENCES SAM BARD TREIMAN 1925–1999 A Biographical Memoir by STEPHEN L. ADLER Any opinions expressed in this memoir are those of the author and do not necessarily reflect the views of the National Academy of Sciences. Biographical Memoirs, VOLUME 80 PUBLISHED 2001 BY THE NATIONAL ACADEMY PRESS WASHINGTON, D.C. Courtesy of Robert P. Matthews SAM BARD TREIMAN May 27, 1925–November 30, 1999 BY STEPHEN L. ADLER AM BARD TREIMAN WAS a major force in particle physics S during the formative period of the current Standard Model, both through his own research and through the training of graduate students. Starting initially in cosmic ray physics, Treiman soon shifted his interests to the new particles being discovered in cosmic ray experiments. He evolved a research style of working closely with experimen- talists, and many of his papers are exemplars of particle phenomenology. By the mid-1950s Treiman had acquired a lifelong interest in the weak interactions. He would preach to his students that “the place to learn about the strong interactions is through the weak and electromagnetic inter- actions; the problem is half as complicated.’’ The history of the subsequent development of the Standard Model showed this philosophy to be prophetic. After the discovery of parity violation in weak interactions, Treiman in collaboration with J. David Jackson and Henry Wyld (1957) worked out the definitive formula for allowed beta decays, taking into account the possible violation of time reversal symmetry, as well as parity. Shortly afterwards Treiman embarked with Marvin Goldberger on a dispersion relations analysis (1958) of pion and nucleon beta decay, a 3 4 BIOGRAPHICAL MEMOIRS major outcome of which was the famed Goldberger-Treiman relation for the charged pion decay amplitude.
    [Show full text]
  • IAS Letter Spring 2004
    THE I NSTITUTE L E T T E R INSTITUTE FOR ADVANCED STUDY PRINCETON, NEW JERSEY · SPRING 2004 J. ROBERT OPPENHEIMER CENTENNIAL (1904–1967) uch has been written about J. Robert Oppen- tions. His younger brother, Frank, would also become a Hans Bethe, who would Mheimer. The substance of his life, his intellect, his physicist. later work with Oppen- patrician manner, his leadership of the Los Alamos In 1921, Oppenheimer graduated from the Ethical heimer at Los Alamos: National Laboratory, his political affiliations and post- Culture School of New York at the top of his class. At “In addition to a superb war military/security entanglements, and his early death Harvard, Oppenheimer studied mathematics and sci- literary style, he brought from cancer, are all components of his compelling story. ence, philosophy and Eastern religion, French and Eng- to them a degree of lish literature. He graduated summa cum laude in 1925 sophistication in physics and afterwards went to Cambridge University’s previously unknown in Cavendish Laboratory as research assistant to J. J. the United States. Here Thomson. Bored with routine laboratory work, he went was a man who obviously to the University of Göttingen, in Germany. understood all the deep Göttingen was the place for quantum physics. Oppen- secrets of quantum heimer met and studied with some of the day’s most mechanics, and yet made prominent figures, Max Born and Niels Bohr among it clear that the most them. In 1927, Oppenheimer received his doctorate. In important questions were the same year, he worked with Born on the structure of unanswered.
    [Show full text]
  • Institute for Advanced Study
    BlueBook09cover_8.4_Q6.crw3.qxp 9/9/09 2:43 PM Page 1 Institute for Advanced Study Adler Alexander Alföldi Allen Arkani-Hamed Atiyah Aydelotte Bahcall Beurling Bois Bombieri Borel Bourgain Bowersock Bynum Caffarelli Chaniotis Cherniss Clagett Constable Crone Cutileiro Dashen Deligne Di Cosmo Dyson Earle Einstein Elliott Fassin Flexner Geertz Gilbert Gilliam Goddard Gödel Goldberger Goldman Goldreich Grabar Griffiths Habicht Harish-Chandra Herzfeld Hirschman Hofer Hörmander Hut Israel Kantorowicz Kaysen Kennan Langlands Lavin Lee Leibler Levine Lowe MacPherson Maldacena Margalit Maskin Matlock Meiss Meritt Milnor Mitrany Montgomery Morse Oppenheimer Pais Panofsky Paret Regge Riefler Rosenbluth Sarnak Scott Seiberg Selberg Setton Siegel Spencer Stewart Strömgren Thompson Tremaine Varnedoe Veblen Voevodsky von Neumann von Staden Walzer Warren Weil Weyl White Whitney Wigderson Wilczek Witten Woodward Woolf Yang Yau Zaldarriaga BlueBook09cover_8.4_Q6.crw3.qxp 9/9/09 2:43 PM Page 2 Director School of Social Science Oswald Veblen Past Trustees Tsung-Dao Lee Peter Goddard Danielle Allen John von Neumann Dean Acheson Herbert H. Lehman Didier Fassin Robert B. Warren Marella Agnelli Samuel D. Leidesdorf Past Directors Albert O. Hirschman André Weil John F. Akers Leon Levy (in order of service) Eric S. Maskin Hermann Weyl A. Adrian Albert Wilmarth S. Lewis Abraham Flexner Joan Wallach Scott Hassler Whitney Rand Araskog Harold F. Linder Frank Aydelotte Michael Walzer Frank Wilczek James G. Arthur Herbert H. Maass J. Robert Oppenheimer Ernest Llewellyn Woodward Frank Aydelotte Elizabeth J. McCormack Carl Kaysen Program in Interdisciplinary Chen Ning Yang Bernard Bailyn Robert B. Menschel Harry Woolf Studies Shing-Tung Yau Edgar Bamberger Sidney A. Mitchell Marvin L.
    [Show full text]
  • Aiphistory Newsletter
    HISTORY NEWSLETTER One Physics Ellipse CENTER FOR HISTORY OF PHYSICS NEWSLETTER Vol. XXXVII, Number 2 Fall 2005 College Park, MD 20740-3843 AIP Tel. 301-209-3165 Major Changes and Progress in the Project to Document the History of Physicists in Industry (HoPI) ome of the highlights of our continuing study of indus- S trial physicists during the last year include: • The grant-funded project has been extended to the end of 2007. • Orville Butler, an experienced PhD historian of science/business, was hired to replace Tom Lassman who left to accept a career track position. • Staff held site visits at major German industrial archives. • A candidates list for longer oral history interviews is being developed. • Oral history interviews were conducted with 3 major industrial physicists. • All 59 interviews with physicists and R&D managers are transcribed and edited. • We’re well into analysis of the transcripts, using NVivo topical-indexing software. By last fall we had completed site visits at the central R&D laboratories at IBM, Corning, GE, Lucent, Xerox, 3M, Exxon Mobil, Kodak, and Texas Instruments—nine of the fifteen com- panies targeted in the study—and had conducted question-set Henry Anton Erikson demonstrating the properties of liquid air in interviews with 54 corporate physicists and science managers his Department of Physics lecture room, University of Minnesota, and 19 technical librarians, records managers, or archivists em- about 1926. Photo courtesy AIP Emilio Segrè Visual Archives, gift of Susan Kilbride. ployed by the companies. Thus we were well ahead of schedule in laboratory site visits and question-set interviews, but as a result we had fallen behind in editing and analyzing the inter- Grants-in-Aid Serve Variety of Purposes views.
    [Show full text]
  • The Suppressed Drawing: Paul Dirac's Hidden Geometry Author(S): Peter Galison Source: Representations, No
    The Suppressed Drawing: Paul Dirac's Hidden Geometry Author(s): Peter Galison Source: Representations, No. 72 (Autumn, 2000), pp. 145-166 Published by: University of California Press Stable URL: https://www.jstor.org/stable/2902912 Accessed: 15-01-2019 14:41 UTC REFERENCES Linked references are available on JSTOR for this article: https://www.jstor.org/stable/2902912?seq=1&cid=pdf-reference#references_tab_contents You may need to log in to JSTOR to access the linked references. JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at https://about.jstor.org/terms University of California Press is collaborating with JSTOR to digitize, preserve and extend access to Representations This content downloaded from 140.247.28.156 on Tue, 15 Jan 2019 14:41:49 UTC All use subject to https://about.jstor.org/terms PETER GALISON The Suppressed Drawing: Paul Dirac's Hidden Geometry Purest Soul FOR MOST OF THE TWENTIETH century, Paul Dirac stood as the theo- rist's theorist. Though less known to the general public than Albert Einstein, Niels Bohr, or Werner Heisenberg, for physicists Dirac was revered as the "theorist with the purest soul," as Bohr described him. Perhaps Bohr called him that because of Dirac's taciturn and solitary demeanor, perhaps because he maintained practically no interests outside physics and never feigned engagement with art, literature, mu- sic, or politics.
    [Show full text]
  • The Story of the Photon
    GENERAL I ARTICLE The Story of the Photon N Mukunda An account of the story of the light quantum or pho­ ton is given, from its inception in 1905 to its final acceptance in 1924. Necessary background informa­ tion on radiation theory and historical details are included. Introduction The photon, so named by the physical chemist Gilbert Nor­ N Mukunda is at the ton Lewis in 1926, is a child of the 20th century. It is the Centre for Theoretical 'particle of light' - or 'light quantum' - first hypothesized by Studies and the Depart­ Albert Einstein in 1905, and then used by him to explain, ment of Physics of the among other things, the photoelectric effect. The story of Indian Institute of Science, Bangalore. His the photon is rich in history, development of ideas, experi­ research interests are in ment and personalities. In this account an attempt will be classical and quantum made to convey something of each of these aspects; the fun­ dynamical formalisms, damental motivations and currents of ideas will be described theoretical optics, and as carefully as possible, and only selected derivations will be general mathematical presented. physics. In addition he writes occasionally on During the year 1905, aptly ,called 'Einstein's Miraculous conceptual and historical Year', he submitted five research papers for publication and aspects of science for also completed his Ph.D. thesis. Of the former, three have general audiences. become all-time classics. In chronological sequence they are: the light quantum paper (March), the paper on the Brown­ ian Motion (May), and the paper establishing the Special Theory of Relativity (June).
    [Show full text]