Catalogue 51: Mostly New Acquisitions
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Philosophia Scientiæ, 13-2 | 2009 [En Ligne], Mis En Ligne Le 01 Octobre 2009, Consulté Le 15 Janvier 2021
Philosophia Scientiæ Travaux d'histoire et de philosophie des sciences 13-2 | 2009 Varia Édition électronique URL : http://journals.openedition.org/philosophiascientiae/224 DOI : 10.4000/philosophiascientiae.224 ISSN : 1775-4283 Éditeur Éditions Kimé Édition imprimée Date de publication : 1 octobre 2009 ISBN : 978-2-84174-504-3 ISSN : 1281-2463 Référence électronique Philosophia Scientiæ, 13-2 | 2009 [En ligne], mis en ligne le 01 octobre 2009, consulté le 15 janvier 2021. URL : http://journals.openedition.org/philosophiascientiae/224 ; DOI : https://doi.org/10.4000/ philosophiascientiae.224 Ce document a été généré automatiquement le 15 janvier 2021. Tous droits réservés 1 SOMMAIRE Actes de la 17e Novembertagung d'histoire des mathématiques (2006) 3-5 novembre 2006 (University of Edinburgh, Royaume-Uni) An Examination of Counterexamples in Proofs and Refutations Samet Bağçe et Can Başkent Formalizability and Knowledge Ascriptions in Mathematical Practice Eva Müller-Hill Conceptions of Continuity: William Kingdon Clifford’s Empirical Conception of Continuity in Mathematics (1868-1879) Josipa Gordana Petrunić Husserlian and Fichtean Leanings: Weyl on Logicism, Intuitionism, and Formalism Norman Sieroka Les journaux de mathématiques dans la première moitié du XIXe siècle en Europe Norbert Verdier Varia Le concept d’espace chez Veronese Une comparaison avec la conception de Helmholtz et Poincaré Paola Cantù Sur le statut des diagrammes de Feynman en théorie quantique des champs Alexis Rosenbaum Why Quarks Are Unobservable Tobias Fox Philosophia Scientiæ, 13-2 | 2009 2 Actes de la 17e Novembertagung d'histoire des mathématiques (2006) 3-5 novembre 2006 (University of Edinburgh, Royaume-Uni) Philosophia Scientiæ, 13-2 | 2009 3 An Examination of Counterexamples in Proofs and Refutations Samet Bağçe and Can Başkent Acknowledgements Partially based on a talk given in 17th Novembertagung in Edinburgh, Scotland in November 2006 by the second author. -
1 WKB Wavefunctions for Simple Harmonics Masatsugu
WKB wavefunctions for simple harmonics Masatsugu Sei Suzuki Department of Physics, SUNY at Binmghamton (Date: November 19, 2011) _________________________________________________________________________ Gregor Wentzel (February 17, 1898, in Düsseldorf, Germany – August 12, 1978, in Ascona, Switzerland) was a German physicist known for development of quantum mechanics. Wentzel, Hendrik Kramers, and Léon Brillouin developed the Wentzel– Kramers–Brillouin approximation in 1926. In his early years, he contributed to X-ray spectroscopy, but then broadened out to make contributions to quantum mechanics, quantum electrodynamics, and meson theory. http://en.wikipedia.org/wiki/Gregor_Wentzel _________________________________________________________________________ Hendrik Anthony "Hans" Kramers (Rotterdam, February 2, 1894 – Oegstgeest, April 24, 1952) was a Dutch physicist. http://en.wikipedia.org/wiki/Hendrik_Anthony_Kramers _________________________________________________________________________ Léon Nicolas Brillouin (August 7, 1889 – October 4, 1969) was a French physicist. He made contributions to quantum mechanics, radio wave propagation in the atmosphere, solid state physics, and information theory. http://en.wikipedia.org/wiki/L%C3%A9on_Brillouin _______________________________________________________________________ 1. Determination of wave functions using the WKB Approximation 1 In order to determine the eave function of the simple harmonics, we use the connection formula of the WKB approximation. V x E III II I x b O a The potential energy is expressed by 1 V (x) m 2 x 2 . 2 0 The x-coordinates a and b (the classical turning points) are obtained as 2 2 a 2 , b 2 , m0 m0 from the equation 1 V (x) m 2 x2 , 2 0 or 1 1 m 2a 2 m 2b2 , 2 0 2 0 where is the constant total energy. Here we apply the connection formula (I, upward) at x = a. -
5 X-Ray Crystallography
Introductory biophysics A. Y. 2016-17 5. X-ray crystallography and its applications to the structural problems of biology Edoardo Milotti Dipartimento di Fisica, Università di Trieste The interatomic distance in a metallic crystal can be roughly estimated as follows. Take, e.g., iron • density: 7.874 g/cm3 • atomic weight: 56 3 • molar volume: VM = 7.1 cm /mole then the interatomic distance is roughly VM d ≈ 3 ≈ 2.2nm N A Edoardo Milotti - Introductory biophysics - A.Y. 2016-17 The atomic lattice can be used a sort of diffraction grating for short-wavelength radiation, about 100 times shorter than visible light which is in the range 400-750 nm. Since hc 2·10−25 J m 1.24 eV µm E = ≈ ≈ γ λ λ λ 1 nm radiation corresponds to about 1 keV photon energy. Edoardo Milotti - Introductory biophysics - A.Y. 2016-17 !"#$%&'$(")* S#%/J&T&U2*#<.%&CKET3&VG$GG./"#%G3&W.%-$/; +(."J&AN&>,%()&CTDB3&S.%)(/3&X.1*&W.%-$/; Y#<.)&V%(Z.&(/&V=;1(21&(/&CTCL&[G#%&=(1&"(12#5.%;&#G&*=.& "(GG%$2*(#/&#G&\8%$;1&<;&2%;1*$)1] 9/(*($));&=.&1*:"(."&H(*=&^_/F*./3&$/"&*=./&H(*=&'$`&V)$/2I&(/& S.%)(/3&H=.%.&=.&=$<()(*$*."&(/&CTBD&H(*=&$&*=.1(1&[a<.% "(.& 9/*.%G.%./Z.%12=.(/:/F./ $/&,)$/,$%$)).)./ V)$**./[?& 7=./&=.&H#%I."&$*&*=.&9/1*(*:*.&#G&7=.#%.*(2$)&V=;1(213&=.$"."& <;&>%/#)"&Q#--.%G.)"3&:/*()&=.&H$1&$,,#(/*."&G:))&,%#G.11#%&$*& *=.&4/(5.%1(*;&#G&0%$/IG:%*&(/&CTCL3&H=./&=.&$)1#&%.2.(5."&=(1& Y#<.)&V%(Z.?& !"#$%"#&'()#**(&8 9/*%#":2*#%;&<(#,=;1(21&8 >?@?&ABCD8CE Arnold Sommerfeld (1868-1951) ... Four of Sommerfeld's doctoral students, Werner Heisenberg, Wolfgang Pauli, Peter Debye, and Hans Bethe went on to win Nobel Prizes, while others, most notably, Walter Heitler, Rudolf Peierls, Karl Bechert, Hermann Brück, Paul Peter Ewald, Eugene Feenberg, Herbert Fröhlich, Erwin Fues, Ernst Guillemin, Helmut Hönl, Ludwig Hopf, Adolf KratZer, Otto Laporte, Wilhelm LenZ, Karl Meissner, Rudolf Seeliger, Ernst C. -
GREGOR WENTZEL February 17, 1898 - August 12, 1978
GREGOR WENTZEL February 17, 1898 - August 12, 1978 arXiv:0809.2102v1 [physics.hist-ph] 11 Sep 2008 BY PETER G.O. FREUND, CHARLES J. GOEBEL, YOICHIRO NAMBU AND REINHARD OEHME 1 Biographical sketch The initial of Gregor Wentzel's last name has found a solid place in the language of theoretical physics as the W of the fundamental WKB approxi- mation, which describes the semi-classical limit of any quantum system. Be- yond this fundamental contribution to quantum theory [1], Gregor Wentzel has played an important role in the theoretical physics of the first half of the twentieth century. Born in D¨usseldorfon 17 February, 1898, Gregor benefited from a rich and multi-faceted education. As the greatest events of his youth, Wentzel used to recall the local premi`eresof the symphonies of Gustav Mahler. A lifelong love for music was instilled in the young Gregor. During World War I he served in the army from 1917 to 1918. At the conclusion of that cataclysmic event, he continued his studies, migrating from university to university, as was customary in those days. First, until 1919 we find him at the University of Freiburg, then at the University of Greifswald, and as of 1920, just like Wolfgang Pauli and Werner Heisenberg and then later Hans Bethe among others, studying with the legendary teacher Arnold Sommerfeld at the Ludwig Maximilians University in Munich, where he obtained his Ph.D. with a thesis on Roentgen spectra [2]. Still in Munich he completed his Habilitation in 1922 and became a Privatdozent (roughly the equivalent of what today would be an assistant professor). -
Training Quantum Mechanics: Enrollments and Epistemology in Modern Physics
Training Quantum Mechanics: Enrollments and Epistemology in Modern Physics David Kaiser Program in Science, Technology, and Society, MIT and Department of Physics, MIT Building E51-185 Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge, MA 02139 [email protected] Abstract*. The classrooms of American colleges and universities bulged like never before after World War II. Several major changes, including the G. I. Bill, brought over two million veterans into the nation’s institutions of higher education. Enrollments in nearly every department rose exponentially. Yet graduate enrollments in physics departments grew fastest, at almost twice the rate of all other fields combined. Twenty- five years later, enrollments in nearly all fields underwent a major contraction; again, physics led the way, falling faster and deeper than any other field. This paper examines some effects of these violent demographic swings on the subject of physics itself. How, in short, did the enrollment bubble affect the stuff of knowledge? I focus on how the subject of quantum mechanics—physicists’ description of matter at the atomic scale, the cornerstone of modern physics—was taught in the decades after World War II. Faced with runaway enrollments, American physicists re-crafted the subject in the classroom, accentuating those elements that could lend themselves to high throughput pedagogy—a cache of exemplars that could be routinized into problem sets and exam questions—while quietly dropping the last vestiges of “philosophy” or “interpretation” that had long been considered crucial to understanding the topic. Introduction: The Cold War Bubble “Physical scientists are in vogue these days,” announced a commentator in Harper’s a few years after the end of World War II. -
Heisenberg and the Early Days of Quantum Mechanics
REMINISCENCES OF Heisenberg and the early days of quantum mechanics Recollections of the days, 50 years ago, when a handful of students in the "entirely useless" field of physics heard of a strange new mechanics invented by Maurice de Broglie, Werner Heisenberg and Erwin Schrodinger. Felix Bloch It is appropriate in this year, when we could take, and there was nothing like the with firm authority by Debye, might have celebrate the 50th anniversary of quan- complete menu that is presented to the had an audience of as much as a couple of tum mechanics, and during which we have students nowadays. Once in a while, a dozen—on a good day. been saddened by the death of one of its professor would offer a special course on Physics was also taught at the Univer- leading founders, Werner Heisenberg, to a subject he just happened to be inter- sity of Zurich by a smaller and rather less reminisce about the formative years of the ested in, completely disregarding the illustrious faculty than that at the E. T. H. new mechanics. At the time when the tremendous gaps in our knowledge left by Theory there was in the hands of a certain foundations of physics were being re- this system. Anyway, there was only a Austrian of the name of Schrodinger, and placed with totally new concepts I was a handful of us foolish enough to study the colloquium was alternately held at student of physics. I sat in the collo- physics and it was evidently not thought both institutions. I apologize to my quium audience when Peter Debye made worthwhile to bother much about these friends who already have heard from me the suggestions to Erwin Schrodinger that "odd fellows." The only thing we could what I am going to tell you now. -
Wolfgang Pauli's100th Birthday Fact, a First Marriage Failed After Less Than a Year
FEATURES the University ofZurich, Gregor Wentzel, "withthewomen things don't go at all". In Wolfgang Pauli's 100th birthday fact, a first marriage failed after less than a year. It was during this period, however, A personal view by Prof. C. P. Enz, W. Pauli's last assistant that Pauli had the idea of the neutrino as the only way out ofthe problem ofan en ccording to a recent inquiry by of the elements and later was recognized ergy deficit in the beta-decay. - In 1932 A Physics World concerning the ten to be responsible, quite generally, for the Pauli met the famous psychiatrist Carl most important physicists ever, Wolfgang stability ofmatter. But even before that he Gustav Jung in Zurich which resulted in a Pauli does not belong to them. For those had postulated the existence of a nuclear psychoanalysis during three years. Short ofan older generation for whom Pauli was spin in order to explain the hyperfine ly afterwards Pauli remarried, "the conscience ofphysics" this comes as a anomalies in the spectra. Hamburg also this time durably. Jung had surprise. But it shows perhaps that both was the scene of Pauli's discussions with immediatly seen that his exclusion principle and his neutrino Otto Stern. But in spite of this friendship Pauli had frequent idea - which at first were hard to swallow Stern would not let Pauli enter his labora dreams containing a - have since become household words, tory - because of the Pauli effect. For, it wealth ofarchaic ma while his proverbial wit is lost to a genera was said that every time Pauli entered a terial that caught Jung's tion communicating bye-mail. -
Michael Eckert Science, Life and Turbulent Times –
Michael Eckert Arnold Sommerfeld Science, Life and Turbulent Times – Michael Eckert Arnold Sommerfeld. Science, Life and Turbulent Times Michael Eckert translated by Tom Artin Arnold Sommerfeld Science, Life and Turbulent Times 1868–1951 Michael Eckert Deutsches Museum Munich , Germany Translation of Arnold Sommerfeld: Atomphysiker und Kulturbote 1868–1951, originally published in German by Wallstein Verlag, Göttingen ISBN ---- ISBN ---- (eBook) DOI ./---- Springer New York Heidelberg Dordrecht London Library of Congress Control Number: © Springer Science+Business Media New York Th is work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifi cally the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfi lms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. Exempted from this legal reservation are brief excerpts in connection with reviews or scholarly analysis or material supplied specifi cally for the purpose of being entered and executed on a computer system, for exclusive use by the purchaser of the work. Duplication of this publication or parts thereof is permitted only under the provisions of the Copyright Law of the Publisher’s location, in its current version, and permission for use must always be obtained from Springer. Permissions for use may be obtained through RightsLink at the Copyright Clearance Center. Violations are liable to prosecution under the respective Copyright Law. Th e use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specifi c statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. -
Arxiv:1403.5164V1 [Physics.Hist-Ph] 20 Mar 2014
The education of Walter Kohn and the creation of density functional theory Andrew Zangwill∗ School of Physics Georgia Institute of Technology Atlanta, GA 30332 The theoretical solid-state physicist Walter Kohn was awarded one-half of the 1998 Nobel Prize in Chemistry for his mid-1960’s creation of an approach to the many-particle problem in quantum mechanics called density functional theory (DFT). In its exact form, DFT establishes that the total charge density of any system of electrons and nuclei provides all the information needed for a complete description of that system. This was a breakthrough for the study of atoms, molecules, gases, liquids, and solids. Before DFT, it was thought that only the vastly more complicated many-electron wave function was needed for a complete description of such systems. Today, fifty years after its introduction, DFT (in one of its approximate forms) is the method of choice used by most scientists to calculate the physical properties of materials of all kinds. In this paper, I present a biographical essay of Kohn’s educational experiences and professional career up to and including the creation of DFT. My account begins with Kohn’s student years in Austria, England, and Canada during World War II and continues with his graduate and post-graduate training at Harvard University and Niels Bohr’s Institute for Theoretical Physics in Copenhagen. I then study the research choices he made during the first ten years of his career (when he was a faculty member at the Carnegie Institute of Technology and a frequent visitor to the Bell Telephone Laboratories) in the context of the theoretical solid-state physics agenda of the late 1950’s and early 1960’s. -
Iterview with Valentine L. Telegdi
VALENTINE L. TELEGDI (1922 – 2006) INTERVIEWED BY SARA LIPPINCOTT March 4 and 9, 2002 ARCHIVES CALIFORNIA INSTITUTE OF TECHNOLOGY Pasadena, California Subject area Physics Abstract Valentine Louis Telegdi was born in Budapest in 1922 and grew up in Bulgaria. He took his Master of Science degree in chemical engineering at Lausanne University in 1946 and received his PhD in 1950 from the ETH (Eidgenössische Technische Hochschule), the Swiss Federal Institute of Technology. Victor Weisskopf and Gregor Wentzel were instrumental in his appointment as an instructor at the University of Chicago in 1951, where he worked with Murray Gell-Mann. In 1954, after Enrico Fermi’s death, Telegdi became the head of Fermi’s Nuclear Emulsion Group there. In 1956, he went to the Institute for Advanced Study for three months. Later that year, back in Chicago, he and Jerome I. Friedman found parity violation in muon decay, in parallel with the work of Chien-Shiung Wu at Columbia and her collaborators at the National Bureau of Standards, and that of Richard L. Garwin, Leon M. Lederman, and Marcel Weinrich at Columbia. In 1959-1960, on leave from Chicago, Telegdi worked with Garwin at CERN on the anomalous magnetic moment of the muon. In 1966, again on leave from Chicago, he had a visiting lectureship at Harvard. In 1968, Telegdi was elected to the National Academy of Sciences and in 1972 he http://resolver.caltech.edu/CaltechOH:OH_Telegdi_V became the Enrico Fermi Distinguished Service Professor of Physics at Chicago. He left the university four years later—discouraged at what he called the “decay” of the Enrico Fermi Institute since Fermi’s death and the increasingly cumbersome grants process—and returned to Switzerland, where he headed a group at the ETH doing atomic physics; he also took up a joint appointment at CERN, heading a particle physics group. -
Jussi Leinonen Aalto U. 2013 Vijay Tallapragada Andhra University
&hara4 al@0in al@Tusi 2aterina &carpellini leanor Anne >r(erod ,a(al al 0in I:n *unus 7asir al@0in al@Tusi &ha(s ad@0in Al@6ukhari +arageh >:servatory /regory 2hioniadis +anuel 6ryennios Theodore +etochites /regory #ala(as 1315 1311 1311 7ilos ,a:asilas 1363 1383 'einrich von Langenstein lissaeus Judaeus 0e(etrios ,ydones 1375 U. #aris 13.1 /eorgios #lethon /e(istos 1393 1333 Johannes von /(unden +anuel 2hrysoloras 1406 U. Vienna 1908 /uarino da Verona 1408 190; Vittorino da )eltre 1416 U. #adova 1918 Theodoros /a%es 1433 U. +antova 1933 6asilios 6essarion 1436 +ystras 1938 /eorg von #euer:ach 1440 U. Vienna 1990 Johannes Argyropoulos /aetano de Thiene &igismondo #olcastro 1444 U. #adova 1999 0e(etrios 2hal!ocondyles #elope #ietro "occa:onella 1452 +ystras U. #adova 1912 7iccolo Leoniceno 7icoletto Vernia 1453 U. #adova U. #adova 1913 Johannes +uller "egio(ontanus 1457 U. Vienna 191. +arsilio )icino #aolo dal #o%%o Toscanelli 1462 U. )lorence U. #adova 1982 Leonardo da Vinci )lorens )lorentius "ad=yn "ade=yns /eert /erardus +agnus /roote 1471 U. )lorence 19.1 Janus Lascaris Tho(as von ,e(pen a ,e(pis 1472 U. #adova 19.2 Jaco: :en Jehiel Loans Alexander 'egius 1474 &t. Agnes, ?=olle 19.9 Johannes &to44ler 2risto4oro Landino 1476 U. Ingolstadt 19.8 Angelo #oliziano 1477 U. )lorence 19.. "udol4 Agricola /eorgius 'er(onymus 1478 U. )errara 19.; Ja!Bues Le4evre d taples 1480 U. #aris 19;0 Johann "euchlin Luca #acioli 1481 U. #oitiers 19;1 0o(enico da )errara 1483 U. )lorence 19;3 Leo >uters 1485 U. -
Bibliography on Quantum Logics and Related Structures
1 BIBLIOGRAPHY ON QUANTUM LOGICS AND RELATED STRUCTURES M. Paviˇci´c Department of Mathematics, University of Zagreb, Kaˇci´ceva 26, Poˇst. pret. 217, CRO{41001 Zagreb, Croatia. Summary. The bibliography contains 1851 references on axiomatic structures underlying quantum mechanics with a stress on varietes of algebraico{logical, probabilistic, and operational structures for which the term quantum logics is adopted. An index of about 250 keywords picked out from the titles is included and statistics about papers, journals, and authors are presented. Monographs and proceedings on the subject are singled out. PACS numbers: 01.30.Tt, 03.65.{w | Bibliography on quantum logic, quantum logic, logico{algebraical structures of quantum mechanics, probabilistico{operational structures of quantum mechanics, quantum formalism. This is an interdisciplinary bibliography on axiomatic structures underlying quantum mechanics with a stress on a number of structures which the International Quantum Structures Association recognizes as aspects of and includes in quantum logics. (The Association was founded on 15th September 1990 in Gdansk´ during the Quantum Logics meeting.) In the literature quantum logic is given many different meanings. It is considered to be an orthomodular partially ordered set with the set of states defined on it [712], simply an orthomodular lattice [1349], a row of algebraico{logical structures recently named quantum propositional logic [1135], and finally manuals and semi{Boolean alge- bras named quantum events logics [1136]. Such a