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WILSON, Robert Charles - Traduit de l'anglais par Gilles Goullet
Spin
2007 Editions Denoël, collection "Lunes d'encre" - 2007 - In-8, broché, couverture illustrée - 550 pages
Reference : 47612
Bon état
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5 book(s) with the same title
Ersetzung der Hypothese vom unmechanishen Zwang durch eine Forderung bezüglich des inneren Verhaltens jades einzelnen Elektrons. - [DISCOVERY OF ELECTRON SPIN]
Berlin, Springer, 1925. Royal8vo. Bound in contemporary half cloth with paper label with handwritten title to spine. In ""Die Naturwissenschaften"", Vol. 30, 1925. Library stamp to title page, otherwise fine and clean. Pp. 953-954. [Entire volume: XXIII, (1), 1092, 44 pp.].
First printing of this landmark paper in which electron spin was first announced. ""Ehrenfest had suggested that he work with a fellow student, Goudsmit, who already was an expert on atomic spectra. The two of them wrote a paper on the spectrum of hydrogen, giving an improved interpretation involving half-integer quantum numbers. Then came their great discovery: electron spin. The quantum numbers they had assigned implied that the electron must have another degree of freedom"" it must be rotating. With this idea everything fell into place. They published first a short note and then, at the encouragement of Niels Bohr, who visited Leiden shortly after their discovery, a longer paper that appeared in Nature. The origin of the spin-orbit interaction was apparently suggested by Albert Einstein, who also visited Leiden at the time and pointed out that in its rest frame, the electron sees an orbiting nucleus and hence a magnetic field. There remained an awkward factor of two in the spin precession rate. This was soon explained as a relativistic effect in an elegant paper by Llewellen H. Thomas. In their third and final paper on electron spin, Goudsmit and Uhlenbeck summarized these results and gave what has become the accepted interpretation of electron spin and atomic spectra."" (DSB)The discovery of electron spin was proposed as an explanation for the Stern-Gerlach experiment. In this experiment a beam of silver atoms was allowed to pass through an inhomogeneous magnetic field. When the magnetic field was on, the beam of silver atoms split into two parts, one deflected up and the other deflected down. In 1925, Uhlenbeck and Goudsmit, both graduate students at the time, proposed an explanation for the Stern-Gerlach experiment by postulating that the electron possesses an intrinsic angular momentum, referred to as ""spin"".This intrinsic angular momentum gives rise to a magnetic moment in the electron that interacts with magnetic fields. The electron spin and the related magnetic moment are quantized such that there are only two possible discrete values. This quantization of the magnetic moment is what leads to the deflection of the beam of silver atoms either up or down in the inhomogeneous magnetic field. Their insight furnished a missing link leading to the final triumph of the then-struggling birth of quantum mechanics.
Théorie générale des particules a Spin (méthode de fusion).
Gauthier-Villars. 1943. In-8. Broché. Bon état, Couv. convenable, Dos satisfaisant, Papier jauni. 201 pages - étiquette collée sur le 2ème plat.. . . . Classification Dewey : 530-Physique
Sommaire : Idées et équations générales de la mécanique ondulatoire - interprétation physique de la mécanique ondulatoire - théorie quantique des moments cinétiques et des spins - les moments cinétiques propres du point de vue relativiste - la théorie de l'électron a Spin de Dirac - formalisme et interprétation physique de la théorie de Dirac - théorie de la particule de spin 1 - mécanique ondulatoire de la particule de spin maximum 1 - théorie générale des particules a spin obtenues par fusion - étude et nomenclature des états de spin prévision des grandeurs tensorielles - théorie de la particule de spin maximum 2. Classification Dewey : 530-Physique
Atomic Phosphorus Paramagnetic Resonance Experiment Employing Universal Dissociator (+) Paramagnetic Resonance Reorientation of Atoms and Ions Aligned by Electron Impact (+) Slow Spin Relaxation of Optically Polarized Sodium Atoms (+) Modulation of a ... - [DEVELOPMENT OF THE ION TRAP]
Lancaster, American Institute of Physics, 1955-1958. Lex8vo. Volume 99, July 15, No. 2, 1955 Volume 103, August 15, No. 4, 1956 Volume 105, March 1, No. 5, 1957" Volume 105, March 15, No. 6, 1957 and Volume 109, January 15, No. 2, 1958 of ""The Physical Review"", Second Series. Entire five volumes offered in the original printed blue wrappers. Stamp with previous owner's name to top of front wrappers on all issues except for volume 105, No. 5 with two stamps. A bit of wear to extremities, and a few scratches and tears to spines. Overall fine, and internally clean. Pp. 527-31" pp. 1125-26 pp. 1487-89 pp. 1924-25 pp. 381-85. [Entire volumes: Pp. 343-681 pp. 839-1135 pp. 1421-1682 pp. 1683-1955" pp. 227-631].
First publication of this series of papers in which Dehmelt developed the ion trap technique which awarded him the Nobel Prize of Physics in 1989. The ion trap is essential for the physical realization of quantum computation and quantum information processing. The ion trap (or Penning trap) is used in physics laboratires worldwide for example in CERN, the world's largest particle physics laboratory, where it is used to store antiprotons and high precision measurement of the magnetic moment of the electron (g-factor).Dehmelt himself wrote about the discovery:""""Paramagnetic Resonance Reorientation of Atoms and Ions Aligned by Electron Impact."" In this paper I first pointed out the usefulness of ion trapping for high resolution spectroscopy and mentioned the 1923 Kingdon trap as a suitable device. This work also brought me into close contact with spin exchange between electron and target atom, which gave me the idea for my 1958 experiment ""Spin Resonance of Free Electrons Polarized by Exchange Collisions."" However, first I had to learn how to produce polarized atoms, which could then transfer their orientation to trapped electrons. Falling back on buffer gas techniques developed in my 1955 Duke paper ""Atomic Phosphorus Paramagnetic Resonance Experiment,"" I quickly demonstrated in my 1956 Seattle paper ""Slow Spin Relaxation of Optically Polarized Sodium Atoms"" how to efficiently produce and monitor a polarized atom cloud. Trapping the electrons in a neutralizing ion cloud slowly diffusing in the buffer gas, I was able to carry out the spin resonance experiment. My optical transmission monitoring scheme proved also very useful in the development of rubidium vapor magnetometers and frequency standards by Earl Bell and Arnold Bloom at Varian Associates, in which I acted as a consultant. The rubidium frequency standard is still the least expensive, smallest and most widely used commercial atomic frequency standard."" (His Nobel Prize lecture).
Democratie tussen spin en web. Democratisch samenleven in de kennis- en netwerkmaatschappij.
Leuven, Universitaire Pers, 1999 Paperback, Nederlands, originele uitgeversomslag, 16x24 cm., 244 pp. ISBN 9789061869870.
Essays : 02. In dit boek spint Mark Eyskens een web van originele gedachten en indringende inzichten, daarbij een eigen terminologie ijkend, rond het reilen en zeilen van de democratie. Een democratie die, in onze post-industriele samenleving, wordt omgewoeld door de aan de gang zijnde informatica- en communicatierevolutie. Eyskens gaat uit van de verkiezingen van 13 juni 1999, waarvan de bevreemdende uitslag aan veel meer te wijten is dan alleen maar aan een scheut dioxine in onze wekelijkse kippenbout, hoe onrustwekkend ook voor onze eetgrage landgenoot. Volgens Eyskens is de democratie nog nooit zo populair geweest maar beleven we een crisis van de representatieve democratie, vooral omdat het beleid erg onpersoonlijk, ingewikkeld en ondoorzichtig is geworden. 'Men' bestuurt, soms als een spin in haar web. Eyskens onderzoekt hoe we verder democratisch kunnen samenleven in een kennis- en netwerkmaatschappij, die van de wereld steeds meer ons dorp maakt. Dit boek is ook een welsprekende boodschap, gericht aan de talloze spoorbijstere burgers en nog meer aan de studerende jeugd, die de inspanning wil opbrengen om na te denken over de verantwoordelijkheid die zij morgen zal dienen op te nemen voor de maatschappij van overmorgen.
La théorie des particules de Spin 1/2 (électrons de Dirac).
Gauthier-Villars. 1951. In-8. Broché. Bon état, Couv. convenable, Dos satisfaisant, Papier jauni. 164 pages.. . . . Classification Dewey : 530-Physique
Sommaire : La mécanique onduloire non relativiste à une fonction d'onde - interprétation physique de la mécanique ondulatoire - théorie quantique des moments cinétiques et des spins - les moments cinétiques propres du point de vue relativiste - la théorie de l'électron à spin de dirac - formalisme et interprétation physique de la théorie de dirac - les solutions à énergie négative en théorie de dirac - le tremblement de Schrodinger - possibilité de mesurer le spin de l'electron - passage à l'approximation de l'optique géométrique en mécanique ondulatoire relativiste . Classification Dewey : 530-Physique
