Histories of the Electron the Birth of Microphysics Ancient Astronomy and Celestial Divination Edited by Jed Z

Total Page:16

File Type:pdf, Size:1020Kb

Histories of the Electron the Birth of Microphysics Ancient Astronomy and Celestial Divination Edited by Jed Z 41402MIT.HISTORIESELECTRON 6/11/01 3:42 PM Page 1 Other Dibner Institute Studies in the History of Science and Technology Histories of the Electron The Birth of Microphysics Ancient Astronomy and Celestial Divination edited by Jed Z. Buchwald and Andrew Warwick edited by N. M. Swerdlow In the mid to late 1890s, J. J.Thomson and colleagues Histories of the Electron Instruments and Experimentation in the History of Chemistry at Cambridge’s Cavendish Laboratory conducted edited by Frederic L. Holmes and Trevor H. Levere experiments on “cathode rays” (a form of radiation produced within evacuated glass vessels subjected to Isaac Newton’s Natural Philosophy Histories of the Electron electric fields)—the results of which some historians edited by Jed Z. Buchwald and I. Bernard Cohen later viewed as the “discovery” of the electron.This book is both a biography of the electron and a history Natural Particulars The Birth of Microphysics of the microphysical world that it opened up. Nature and the Disciplines in Renaissance Europe The book is organized in four parts. The first edited by Anthony Grafton and Nancy Siraisi part, Corpuscles and Electrons, considers the varying accounts of Thomson’s role in the experimental Systems, Experts, and Computers production of the electron. The second part, What The Systems Approach in Management and Engineering,World War II and After Was the Newborn Electron Good For?, examines edited by Agatha C. Hughes and Thomas P.Hughes how scientists used the new entity in physical and chemical investigations. The third part, Electrons Applied and Appropriated, explores the accommo- dation, or lack thereof, of the electron in nuclear physics, chemistry, and electrical science. It follows the electron’s gradual progress from cathode ray to ubiquitous subatomic particle and eponymous enti- Buchwald and Warwick, and Buchwald ty in one of the world’s most successful industries— electronics.The fourth part, Philosophical Electrons, considers the role of the electron in issues of instru- mentalism, epistemology, and realism.The electron, edited by it turns out, can tell us a great deal about how science works. Jed Z. Buchwald and Andrew Warwick Jed Z. Buchwald is Director of the Dibner Institute for the History of Science and Technology and Bern Dibner Professor of the History of Sci- ence at the Massachusetts Institute of Technology. editors Andrew Warwick is Lecturer in the History of The MIT Press Science at Imperial College, London. Massachusetts Institute of Technology Cambridge, Massachusetts 02142 Dibner Institute Studies in the History of Science http://mitpress.mit.edu ,!7IA2G2-acejef!:t;K;k;K;k and Technology 0-262-02494-2 H E Dibner Institute Studies in the History of Science and Technology Jed Z. Buchwald, general editor, Evelyn Simha, governor Jed Z. Buchwald and Andrew Warwick, editors, Histories of the Electron: The Birth of Microphysics Jed Z. Buchwald and I. Bernard Cohen, editors, Isaac Newton’s Natural Philosophy Anthony Grafton and Nancy Siraisi, editors, Natural Particulars: Nature and the Disciplines in Renaissance Europe Frederic L. Holmes and Trevor H. Levere, editors, Instruments and Experimentation in the History of Chemistry Agatha C. Hughes and Thomas P. Hughes, editors, Systems, Experts, and Computers: The Systems Approach in Management and Engineering, World War II and After N. M. Swerdlow, editor, Ancient Astronomy and Celestial Divination H E The Birth of Microphysics edited by Jed Z. Buchwald and Andrew Warwick The MIT Press Cambridge, Massachusetts London, England © 2001 Massachusetts Institute of Technology All rights reserved. No part of this book may be reproduced in any form or by any electronic or mechanical means (including photocopying recording, or information stor- age and retrieval) without permission in writing from the publisher. This book was set in Bembo by Graphic Composition, Inc. in Athens, Georgia with QuarkXPress and printed and bound by in the United States of America Library of Congress Cataloging-in-Publication Data Histories of the electron : the birth of microphysics / edited by Jed Z. Buchwald and Andrew Warwick. p. cm. — (Dibner Institute studies in the history of science and technology) Includes bibliographical references and index. ISBN 0-262-02494-2 (hc. : alk. paper) 1. Electrons—History. 2. Thomson, J.J. ( Joseph John), Sir, 1856–1940. I. Buchwald, Jed Z. II. Warwick, Andrew. III. Series. QC793.5.E62 H57 2001 539.7´2112´09—dc21 00-046580 C A vii C ix I 1 Jed Z. Buchwald and Andrew Warwick ICORPUSCLES AND ELECTRONS 19 1 J. J. T E, 1897–1899 21 George E. Smith 2 C E 77 Isobel Falconer 3 T Q M E: T R J. J. T’ “C” E T T 101 Graeme Gooday 4 P V, J. J. T, C C R 135 Benoit Lelong II WHAT WAS THE NEWBORN ELECTRON GOOD FOR? 169 5 T Z E D E 171 Theodore Arabatzis 6 T E, P, U M 195 Helge Kragh C vi 7 O. W. R E T M, 1901–1916 227 Ole Knudsen 8 E G T M: F E B M 255 Walter Kaiser III ELECTRONS APPLIED AND APPROPRIATED 305 9 T E N 307 Laurie M. Brown 10 T E, H, T 327 Lillian Hoddeson and Michael Riordan 11 R C: T E O C, 1900–1940 339 Mary Jo Nye 12 T P’E I A C 363 Kostas Gavroglu IV PHILOSOPHICAL ELECTRONS 401 13 W R D E? 403 Peter Achinstein 14 H M: O R S 425 Margaret Morrison 15 W S P S L H E? 451 Jonathan Bain and John D. Norton 16 T R T U I; , H M D W N K E D S E M? 467 Nicolas Rasmussen and Alan Chalmers I 503 A The essays in this volume originated in discussions at two meetings held in 1997 to celebrate the centenary of the electron’s discovery. The first, held jointly at the Royal Society and the Science Museum in London, was or- ganized by Alan Morton and Andrew Warwick. The second, organized by the editors of this volume, was held at the Dibner Institute for the History of Science and Technology in Cambridge, Massachusetts. The editors thank the Royal Society and the Science Museum for the London meeting, and the Dibner Institute for the meeting in Cambridge. They also thank the chair- persons, respondents, and delegates who contributed to the lively discussions that took place at both meetings. C Peter Achinstein is Professor of Philosophy at Johns Hopkins University. He is the author of Concepts of Science (1968), Law and Explanation (1971), The Nature of Explanation (1983), and Particles and Waves (1991), which received the 1993 Lakatos Award. He is completing a new work entitled The Book of Evidence. Theodore Arabatzis is Lecturer in History and Philosophy of Science at the University of Athens. He is the author of several articles on the history of the concept of the electron and a forthcoming book, tentatively titled Elec- trons and Reality: A Biographical Essay. Jonathan Bain is Assistant Professor of Philosophy at Polytechnic Univer- sity in Brooklyn. He has published on topics in the philosophy of spacetime and the philosophy of quantum field theory. Laurie M. Brown is Professor of Physics and Astronomy (emeritus) at Northwestern University. He is the author and editor of many books and ar- ticles on the history of modern physics, including The Origin of the Concept of Nuclear Physics (with Helmut Rechenberg) and Twentieth Century Physics (with Sir Brian Pippard and Abraham Pais). Alan Chalmers is Research Fellow in the Philosophy Department, Flinders University, South Australia. He is the author of What Is This Thing Called Sci- ence? (3rd ed., 1999) and Science and Its Fabrication (1990). Isobel Falconer is an independent scholar and the coauthor (with E. A. Davis) of J. J. Thomson and the Discovery of the Electron (1997). Kostas Gavroglu is Professor of History of Science at the University of Athens. His books include Fritz London: A Scientific Biography (1995), and he is currently working on a book on the history of artificial cold. He is also the director of a project to digitize all the scientific and philosophical books and manuscripts written in Greek from the beginning of the seventeenth century to the beginning of the nineteenth (www.space.noa.gr/hellinomnimon). C x Graeme Gooday is Lecturer in the History and Philosophy of Science at the University of Leeds. He has published on experimental science and elec- trical engineering in the nineteenth century, and his first book, The Morals of Measurement: Accuracy, Irony and Trust in Late Victorian Electrical Practice, will soon be published by Cambridge University Press. Lillian Hoddeson is Professor of History at the University of Illinois at Urbana-Champaign and historian at Fermilab in Batavia, Illinois. Her most recent book, with Michael Riordan, is Crystal Fire: The Birth of the Informa- tion Age (1997). She is also a coauthor of Critical Assembly: A History of Los Alamos During the Oppenheimer Years (1993) and Out of the Crystal Maze: Chap- ters from the History of Solid State Physics (1992), as well as coeditor of The Birth of Particle Physics (1983), Pions to Quarks (1989), and The Rise of the Standard Model (1997). Walter Kaiser holds the Chair for the History of Technology at the Uni- versity of Technology of Aachen. He has written on the history of electro- dynamics and solid state physics, and, more generally, on the history and philosophy of science and the history of technology. He is the author of The- orien der Elektrodynamik im 19. Jahrhundert (1981); has edited Ludwig Boltz- mann’s Vorlesungen über Maxwells Theorie der Elektricität und des Lichtes (1982); and has coauthored the Propyläen Technikgeschichte, vol. 5, 1914–1990 (1992 and 1997).
Recommended publications
  • Nov07 NUCLEUS Aa4b
    DED UN 18 O 98 F http://www.nesacs.org N Y O T R E I T H C E N O A E S S S L T A E A C R C I N S M S E E H C C TI N O CA February 2009 Vol. LXXXVII, No. 6 N • AMERI Monthly Meeting Professor Wilton L. Virgo of Wellesley College to Speak at Simmons College Tips for Job Seekers By Megan Driscoll Summer Scholar Report Identification of Genes Regulated by Transcriptional Regulator, p8 By Derek Kong This Month in Chemical History By Harold Goldwhite, California State University, Los Angeles February Historical Events in Chemistry by Leopold May, The Catholic University of America, Washington, DC February 1, 1905 methods for the determination of ing and used it against pellagra and Fifty years ago, Emilio Segré shared crystal structures, was born on this pursued the idea that diseases such the Nobel Prize in Physics (1959) day. as beriberi, scurvy, rickets and pella- with Owen Chamberlain for their gra were caused by lack of vital sub- discovery of the antiproton. He co- February 16, 1955 stances in the diet. discovered technetium with C. Per- F. P. Bundy, H. T. Hall, H. M. Strong rier in 1937, and astatine with D. R. and R. H. O. Wentoff announced the February 25, 1880 Corson and R. MacKenzie in 1940, synthesis of diamonds at General Arthur B. Lamb, who was the editor and demonstrated the existence of Electric Research Laboratories on of the Journal of the American the antiproton in 1955.
    [Show full text]
  • UNIT CONVERSION FACTORS Temperature K C 273 C 1.8(F 32
    Source: FUNDAMENTALS OF MICROSYSTEMS PACKAGING UNIT CONVERSION FACTORS Temperature K ϭ ЊC ϩ 273 ЊC ϭ 1.8(ЊF Ϫ 32) ЊR ϭ ЊF ϩ 460 Length 1 m ϭ 1010 A˚ ϭ 3.28 ft ϭ 39.4 in Mass 1 kg ϭ 2.2 lbm Force 1 N ϭ 1 kg-m/s2 ϭ 0.225 lbf Pressure (stress) 1 P ϭ 1 N/m2 ϭ 1.45 ϫ 10Ϫ4 psi Energy 1 J ϭ 1W-sϭ 1 N-m ϭ 1V-C 1Jϭ 0.239 cal ϭ 6.24 ϫ 1018 eV Current 1 A ϭ 1 C/s ϭ 1V/⍀ CONSTANTS Avogadro’s Number 6.02 ϫ 1023 moleϪ1 Gas Constant, R 8.314 J/(mole-K) Boltzmann’s constant, k 8.62 ϫ 10Ϫ5 eV/K Planck’s constant, h 6.63 ϫ 10Ϫ33 J-s Speed of light in a vacuum, c 3 ϫ 108 m/s Electron charge, q 1.6 ϫ 10Ϫ18 C SI PREFIXES giga, G 109 mega, M 106 kilo, k 103 centi, c 10Ϫ2 milli, m 10Ϫ3 micro, ␮ 10Ϫ6 nano, n 10Ϫ9 Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website. Source: FUNDAMENTALS OF MICROSYSTEMS PACKAGING CHAPTER 1 INTRODUCTION TO MICROSYSTEMS PACKAGING Prof. Rao R. Tummala Georgia Institute of Technology ................................................................................................................. Design Environment IC Thermal Management Packaging Single Materials Chip Opto and RF Functions Discrete Passives Encapsulation IC Reliability IC Assembly Inspection PWB MEMS Board Manufacturing Assembly Test Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies.
    [Show full text]
  • Erich Kretschmann As a Proto-Logical-Empiricist: Adventures and Misadventures of the Point-Coincidence Argument
    Erich Kretschmann as a Proto-Logical-Empiricist: Adventures and Misadventures of the Point-Coincidence Argument Marco Giovanelli Abstract The present paper attempts to show that a 1915 article by Erich Kretschmann must be credited not only for being the source of Einstein’s point-coincidence remark, but also for having anticipated the main lines of the logical-empiricist interpretation of general relativity. Whereas Kretschmann was inspired by the work of Mach and Poincaré, Einstein inserted Kretschmann’s point-coincidence parlance into the context of Ricci and Levi-Civita’s absolute differential calculus. Kretschmann himself realized this and turned the point-coincidence ar- gument against Einstein in his second and more famous 1918 paper. While Einstein had taken nothing from Kretschmann but the expression “point-coincidences”, the logical empiricists, however, instinctively dragged along with it the entire apparatus of Kretschmann’s conven- tionalism. Disappointingly, in their interpretation of general relativity, the logical empiricists unwittingly replicated some epistemological remarks Kretschmann had written before General Relativity even existed. Keywords: Erich Kretschmann, Point Coincidence Argument, Moritz Schlick, General Relativity, Logical Empiricism, Conventionalism 1. Introduction In the early 1980s, John Stachel (Stachel, 1980) and John Norton (Norton, 1984) famously shed new light on Einstein’s celebrated, yet somewhat cryptic, claim that all physical measurements amount to a determination of space-time coincidences, such as the matching of a pointer with a scale, or, if the world consisted of nothing but particles in motion, the meetings of their world-lines. In Einstein’s published writings, this remark — which Stachel has success- fully labeled the “point-coincidence argument” — amounts to the requirement of “general covariance”: since all coordinate systems necessarily agree on coin- cidences, that is, in everything observable, there is no reason to privilege one coordinate system over another.
    [Show full text]
  • Chronological List of Correspondence, 1895–1920
    CHRONOLOGICAL LIST OF CORRESPONDENCE, 1895–1920 In this chronological list of correspondence, the volume and document numbers follow each name. Documents abstracted in the calendars are listed in the Alphabetical List of Texts in this volume. 1895 13 or 20 Mar To Mileva Maric;;, 1, 45 29 Apr To Rosa Winteler, 1, 46 Summer To Caesar Koch, 1, 6 18 May To Rosa Winteler, 1, 47 28 Jul To Julia Niggli, 1, 48 Aug To Rosa Winteler, 5: Vol. 1, 48a 1896 early Aug To Mileva Maric;;, 1, 50 6? Aug To Julia Niggli, 1, 51 21 Apr To Marie Winteler, with a 10? Aug To Mileva Maric;;, 1, 52 postscript by Pauline Einstein, after 10 Aug–before 10 Sep 1,18 From Mileva Maric;;, 1, 53 7 Sep To the Department of Education, 10 Sep To Mileva Maric;;, 1, 54 Canton of Aargau, 1, 20 11 Sep To Julia Niggli, 1, 55 4–25 Nov From Marie Winteler, 1, 29 11 Sep To Pauline Winteler, 1, 56 30 Nov From Marie Winteler, 1, 30 28? Sep To Mileva Maric;;, 1, 57 10 Oct To Mileva Maric;;, 1, 58 1897 19 Oct To the Swiss Federal Council, 1, 60 May? To Pauline Winteler, 1, 34 1900 21 May To Pauline Winteler, 5: Vol. 1, 34a 7 Jun To Pauline Winteler, 1, 35 ? From Mileva Maric;;, 1, 61 after 20 Oct From Mileva Maric;;, 1, 36 28 Feb To the Swiss Department of Foreign Affairs, 1, 62 1898 26 Jun To the Zurich City Council, 1, 65 29? Jul To Mileva Maric;;, 1, 68 ? To Maja Einstein, 1, 38 1 Aug To Mileva Maric;;, 1, 69 2 Jan To Mileva Maric;; [envelope only], 1 6 Aug To Mileva Maric;;, 1, 70 13 Jan To Maja Einstein, 8: Vol.
    [Show full text]
  • The Reichenbach-Einstein Debate on the Geometrization of the Electromagnetic Field
    ‘. But I Still Can’t Get Rid of a Sense of Artificiality’: The Reichenbach-Einstein Debate on the Geometrization of the Electromagnetic Field Marco Giovanelli Contributing editor at the Einstein Paper Project at Caltech: Einstein Papers Project Caltech M/C 20-7 1200 East California Blvd. Pasadena, CA 91125, USA Universität Tübingen, Forum Scientiarum, Doblerstraße 33 72074 Tübingen, Germany Abstract This paper analyzes correspondence between Reichenbach and Einstein from the spring of 1926, concerning what it means to ‘geometrize’ a physical field. The content of a typewritten note that Reichenbach sent to Einstein on that occasion is reconstructed, showing that it was an early version of §49 of the untranslated Appendix to his Philosophie der Raum-Zeit-Lehre, on which Reichenbach was working at the time. This paper claims that the toy-geometrization of the electromagnetic field that Reichenbach presented in his note should not be regarded as merely a virtuoso mathematical exercise, but as an additional argument supporting the core philosophical message of his 1928 monograph. This paper concludes by suggesting that Reichenbach’s infamous ‘relativization of geometry’ was only a stepping stone on the way to his main concern—the question of the ‘geometrization of gravitation’. Aber ich kann auch da das Gefühl des Künstlichen nicht los werden Reichenbach to Einstein, March 16, 1926 Introduction In the late 1950s, Hans Reichenbach’s second wife Maria Reichenbach edited an English translation (Reichenbach, 1958) of his Philosophie der Raum-Zeit-Lehre (Reichenbach, 1928). This edition was missing a long Appendix entitled ‘Die Weylsche Erweiterung des Riemannschen Raumbegriffs und die geometrische Deutung der Elektrizität’ (‘Weyl’s Extension of Riemann’s Concept of Space and the Geometrical Interpretation of Electromagnetism’).
    [Show full text]
  • THE RELATION of PHYSICIANS to EARLY AMERICAN GEOLOGY by WILLIAM BROWNING, Ph.B., M.D
    THE RELATION OF PHYSICIANS TO EARLY AMERICAN GEOLOGY By WILLIAM BROWNING, Ph.B., M.D. BROOKLYN, N. Y. HE part taken by physicians but part of the larger one of medical in the genesis of the natural pioneering in the sciences. Medicine sciences has long been re- has been termed “Mother of the marked. Their share in the Sciences,” which fits in very well, as development of such lines inMaclure, this a non-medical Scot, is some- Tcountry is worthy of consideration. A times called the father of American similarity in primogenesis of the geology; though, if medico-socialistic sciences here and at large is the more not to say communistic upheavers natural as they were not simply progress, the juniors may become even transplanted but in varying degrees less proud of the old lady. further developed. Especially in geol- The instances so far found of this ogy the necessary application to indi- double form of professional training genous conditions and the rapid are, as follows, the names arranged advance of the subject at that period chronologically according to date of made its origin here comparable to birth. Of course these men did their that of a new science. geologic work years later. Many of the It is from the historic point of names are so well-known that only view, rather than from any special brief mention is necessary. More de- knowledge of geology, that the subject tails are hence given of those whose is here approached, though every sketches in biographic works are im- intelligent person can find interest in perfect or wanting, or whose relation some phase of the science.
    [Show full text]
  • President's Report
    KASSACHUSETTS INSTITUTE OF TECHNOLOGY. t PRESIDENT'S REPORT FOR THE Year ending" Sept. 30, 1875, BOSTON: PRESS Or A. A. KINGMAN, I8'/6. ~i~ 1~i i MASSACHUSETTS INSTITUTE OF TECHNOLOGY. PRESIDENT'S REPORT FOR THE Year ending Sept. 30~ 1875. BOSTON : PRESS OF A. A. KINGMAN. 1876. , , , ~ ', Extracts from Acts of the General Court of Jl,[assachusetts, in relation to he Massachusetts Institute of Technology. Act of Incorporation. "William B. Rogers [and others named], their associates and successors, are hereby made a body corporate, by the name of the M.~SSA- CHUSliTTS INSTITUTEOF T~CHNOLOGY, for the purpose of instituting and maintaining a Society of Arts, a Museum of Arts, and a School of Industrial Science, and aiding generally, by suitable means, the advancement, development, and practical appli- cation of sciences in connection with arts, agriculture, manufactures, and commerce." Chapter 183, Acts and ~e~oZves of 1861. Grant of Public Lands. "When the Massachusetts Institute of Technology shall have been duly organized, located, and established, ...... there shall be appropriated and paid to its treasurer, each year, on the warrant of the Governor, for ~i~ ~ its endowment, support, and maintenance, one third part of the annual interest or Income which may be received from the fund created under and by virtue of the 130th chapter of the Acts of the 37th Congress~ at the second session thereof, approved July 2, 1862 [giving Public Lands to the States in aid of instruction in Agriculture, the Mechanic Arts, and Military Science and Tactics] ...... Said Institute of Technology, in addition to the objects set forth in its Act of Incorporation [as above quoted], shall provide for instruction in military tactics." Chapter 186, Acts and _Resolvesof 1863.
    [Show full text]
  • July 2019 Newsletter GEARS Founded August 13, 1939 News
    July 2019 Newsletter GEARS Founded August 13, 1939 News Field day was a success. This year GARS joined us out at the Masonic Lodge. The weather was very comfortable for a change. While band conditions were difficult at first, they improved by the morning. We haven’t totaled the points yet, however it seems that we did better than last year. We also got coverage from Action News and the Chico Enterprise Record. See photos below. My house was struck by lighting on May 30th, hitting my antenna and traveling down the feed line, through the radios and discharged into the house wiring. Fortunately the fire department put out the fire quickly and minimized damage. I’m off the air until repairs are completed to the house. See photo below. The GEARS/GARS new repeater project is proceeding along. The equipment has been ordered. We are waiting for approval from the US Forest Service before we can begin installation. At our next GEARS meeting Kevin Fullerton WB7SKS will be talking about emergency operations for the Camp Fire. He has some very interesting experiences to tell us about, and suggestions for preparing for emergencies. The Steak Bake is Sep.7th at Wildwood picnic area in Chico at 3:30pm - 7pm. This month our feature article is about Sir John Ambrose Fleming’s invention of the vacuum tube. ‘73 Join GEARS on Facebook Jim Matthews K6EST www.facebook.com For timely ​ [email protected] news and additional information. 530-893-3314 July 2019 Calendar Sun Mon Tue Wed Thu Fri Sat 1 2 3 4 5 6 7pm GARS Net 7:30pm GEARS Net 7pm Simplex Net 8pm
    [Show full text]
  • Life of Sir William E. Logan
    %:% : LIFE SIR WILLIAM E. LOGAN, It., LL.D., F.E.S., F.G-.S., &c. first director of the geological survey of canada. Chiefly Compiled feom his Letters, Journals and Reports. BERNARD J. HARRINGTON, B.A., Ph.D., PROFESSOR 01' MINING IN M'GILL UNIVERSITY ; LATE CHEMIST AND MINERALOGIST TO THE GEOLOGICAL SURVEY OP CANADA. WITH. STEEL PORTRAIT AND NUMEROUS WOODCUTS. EonBon SAMPSON LOW, MARSTON, SEARLE, & RIVINGTON, CROWN BUILDINGS, 188 FLEET STREET. 1883 6 PREFACE. rPHE task of preparing a biography of Sir William Logan was not a self-imposed one, and was only undertaken with feelings of great delicacy. There are those who knew him longer and more intimately, and who might have done far better justice to his memory. But the work having been entrusted to me, I have endeavoured to discharge it faithfully. My aim has not been to write a eulogium or yet a lengthy criti- cism of Sir William, but rather to bring together such of his own words as will recall him to the minds and hearts of old friends, or enable those who were not privileged with his acquaintance to form for them- selves an estimate of his character and work. Canadians cannot afford to forget the name of oije who laboured so long and so earnestly to promote the interests of this his native land, and if the following pages in any way serve to keep green the memory of Sir William Logan, their compiler will feel more than repaid. We have plenty of Canadians able and willing vi. PREFACE. to work for themselves, but too few who, like Logan, are willing to work for Canada.
    [Show full text]
  • 1990-04: Sir Ambrose Fleming
    When 1 Think Back.. by Neville Williams Sir John Ambrose Fleming: He invented radio valves - or did he? Dr/Professor Sir John Ambrose Fleming is remembered primarily as the inventor of the Fleming thermionic, diode and the 'father' of radio valves, which were fundamental to the subsequent development of the industry. Whether or not this is strictly correct is debateable but, either way, Ambrose Fleming made a very considerable contribution to basic electrical and electronic technology. Curiously, one finds scant mention, in patent rights in respect to the ther- relevant textbooks, of Fleming's per- mionic diode; but more about that later! sonal background or his academic ca- Sir John Ambrose Fleming - a gifted reer. Beyond the fact that he was born Fleming the academic scientist of his day. in 1849, the texts to which I had access Curious about Fleming's academic ca- make little or no reference to his birth- reer, I checked through a number of old I have little doubt that the 'rules-of- place, his family or the steps in his ca- reference books in my possession. thumb' we were invited to memorise in reer which led to his ultimate knight- First off, a brief entry in a 60-year old other days were devised by John Am- hood. Pear's encyclopedia indicated that Flem- brose Fleming, the subject of this pre- The British technical writer/consultant ing's involvement with the University sent article. S. Handel comes closest in The Elec- College spanned 40-odd years, from There is no ambiguity, however, tronic Revolution (Penguin Books, UK, 1885 to 1926, by which time he would about the Dr J.A.
    [Show full text]
  • The Formative Years of Relativity: the History and Meaning of Einstein's
    © Copyright, Princeton University Press. No part of this book may be distributed, posted, or reproduced in any form by digital or mechanical means without prior written permission of the publisher. 1 INTRODUCTION The Meaning of Relativity, also known as Four Lectures on Relativity, is Einstein’s definitive exposition of his special and general theories of relativity. It was written in the early 1920s, a few years after he had elaborated his general theory of rel- ativity. Neither before nor afterward did he offer a similarly comprehensive exposition that included not only the theory’s technical apparatus but also detailed explanations making his achievement accessible to readers with a certain mathematical knowledge but no prior familiarity with relativity theory. In 1916, he published a review paper that provided the first condensed overview of the theory but still reflected many features of the tortured pathway by which he had arrived at his new theory of gravitation in late 1915. An edition of the manuscript of this paper with introductions and detailed commentar- ies on the discussion of its historical contexts can be found in The Road to Relativity.1 Immediately afterward, Einstein wrote a nontechnical popular account, Relativity— The Special and General Theory.2 Beginning with its first German edition, in 1917, it became a global bestseller and marked the first triumph of relativity theory as a broad cultural phenomenon. We have recently republished this book with extensive commentaries and historical contexts that document its global success. These early accounts, however, were able to present the theory only in its infancy. Immediately after its publication on 25 November 1915, Einstein’s theory of general relativity was taken up, elaborated, and controversially discussed by his colleagues, who included physicists, mathematicians, astronomers, and philosophers.
    [Show full text]
  • The Hole Argument and Some Physical and Philosophical Implications
    Living Rev. Relativity, 17,(2014),1 ,)6).' 2%6)%73 http://www.livingreviews.org/lrr-2014-1 doi:10.12942/lrr-2014-1 INRELATIVITY The Hole Argument and Some Physical and Philosophical Implications John Stachel Center for Einstein Studies, Boston University 745 Commonwealth Avenue Boston, MA 02215 U.S.A. email: [email protected] Accepted: 17 November 2013 Published: 6 February 2014 Abstract This is a historical-critical study of the hole argument, concentrating on the interface between historical, philosophical and physical issues. Although it includes a review of its history, its primary aim is a discussion of the contemporary implications of the hole argument for physical theories based on dynamical, background-independent space-time structures. The historical review includes Einstein’s formulations of the hole argument, Kretschmann’s critique, as well as Hilbert’s reformulation and Darmois’ formulation of the general-relativistic Cauchy problem. The 1970s saw a revival of interest in the hole argument, growing out of attempts to answer the question: Why did three years elapse between Einstein’s adoption of the metric tensor to represent the gravitational field and his adoption of the Einstein field equations? The main part presents some modern mathematical versions of the hole argument, including both coordinate-dependent and coordinate-independent definitions of covariance and general covariance; and the fiber bundle formulation of both natural and gauge natural theories. By abstraction from continuity and di↵erentiability, these formulations can be extended from di↵erentiable manifolds to any set; and the concepts of permutability and general permutability applied to theories based on relations between the elements of a set, such as elementary particle theories.
    [Show full text]