Einstein

1 803 résultats

Trier parPrix décroissant

Pertinence Auteur A - Z Auteur Z - A Titre A - Z Titre Z - A Prix croissant Prix décroissant Libraire A - Z Libraire Z - A

Par page25

25 50 100

Filtres

Einstein, AlbertBiblio.com

BEITRAGE ZUR QUANTENTHEORIE - paper in BERICHTE DER DEUTSCHEN PHYSIKALISCHEN GESELLSCHAFT IM JAHRE 1914

Franck, James; Hertz, Gustav Ludwig WITH Einstein, AlbertBiblio.com

Uber ZusammenstoBe zwischen Elektronen und Moleklen des Queck-silberdampfes und die Ionisierungsspannung desselben AND Uber Erregung der Quecksilberresonanzlinie 2536 durch ElektronenstoBe Franck and Hertz pp. 457-467 and pp. 512-517 AND Beitrage zur Quantentheorie Einstein pp. 820-828 in Verhandlungen der Deutschen Physikalischen Gesellschaft 16 1914. Titles in German Über Zusammenstöße zwischen Elektronen und Molekülen des Quecksilberdampfes und die Ionisierungsspannung desselben" AND "Über die Erregung der Quecksilberresonanzlinie 2536 durch Elektronenstöße" Franck and Hertz pp. 457-467 and pp. 512-517 WITH "Beitrage zur Quantentheorie" Einstein pp. 820-828

19141199Braunschweig: Friedr. Vieweg & Sohn 1914. 1st Edition. FIRST EDITION FULL VOLUME OF THE FRANCK-HERTZ EXPERIMENT: THE FIRST ELECTRICAL MEASUREMENT TO CLEARLY SHOW THE QUANTUM NATURE OF ATOMS - PROOF OF THE QUANTIZED MODEL OF THE BOHR ATOM & OF PLANCK'S QUANTUM THEORY. Note that this volume includes both the first and second Franck-Hertz experiment. In the first they demonstrate that atoms can only absorb and be excited by specific amounts of energy; in the second experiment performed the same year they demonstrate that the frequency of the light emitted following the collision of electrons with mercury atoms corresponds precisely with the energy lost by the electrons in the collision. Franck and Hertz received the Nobel Prize for this work specifically "for their discovery of the laws governing the impact of an electron upon an atom" Nobel Prize Committee. Of equal import this volume also contains a paper by Einstein in which he uses the light quantum hypothesis to give new derivations of Planck's radiation law and Nernst's third law of thermodynamics. His "proofs introduced the quantum hypothesis" Calaprice The Einstein Almanac 40. In 1914 James Franck and Gustav Hertz were working together in the Physics Institute of Berlin and were "particularly interested in ionization i.e. in the process in which an electron is removed from an atom" The Harvest of a Century" p. 102-103. The experiment they devised now known commonly as the Franck-Hertz experiment is "a vivid illustration of the quantization of energy" that relied on methodology so simple "that it is now carried out regularly by undergraduates. They accelerated electrons through a low-pressure gas of mercury. When the electrons' energy reach the energy of a stationary state of mercury they gave up a quantum of energy to the mercury resulting in a stepwise shape to the curve of current through the apparatus. This demonstrated that atoms could absorb energy only in discrete amounts" Peacock The Quantum Revolution 40. "Franck and Hertz had not only shown for the first time that electrons lose their kinetic energy to mercury atoms in energy quanta but also that these energy quanta are equal to the energy of the light emitted by the same atoms if interpreted with Einstein's light-quantum hypothesis.This was the first experimental determination of Planck's constant not using blackbody radiation" Brandt 103. CONDITION & DETAILS: Braunschweig: Friedr. Vieweg & Sohn. 8vo. Unobtrusive stamp on front paste down and title page. In-text figures throughout. Tightly bound in leather over marbled paper boards; gilt-lettered and tooled at the slightly faded and spotted spine which looks worse in the image due to the bright light than it does to the eye. Unusually beautiful marbled paper edges. Bright and very clean throughout. Near fine. Friedr. Vieweg & Sohn hardcover

Atticus Rare Books · États-Unis650,00 $US≈ 549,97 €

EINSTEIN, ALBERT (+) L HOPFBiblio.com

Über einen Satz der Wahrscheinlichkeitsrechnung und seine Anwendung in der Strahlentheorie. Statistische Untersuchung der Bewegung eines Resonators in einem Strahlungsfeld Theorie der Opaleszenz von hogenen Flüssigkeitsgemischen in der Nähe de.

191049714Leipzig Barth 1910. 8vo. Bound in contemporary half cloth with gilt lettering to spine. In "Annalen der Physik" Bd. 33 1910. Entire volume offered. Library stamp to verso of title page light wear to extremities. Otherwise fine and clean. pp. 1096-1104 and pp. 1105-1115; Pp. 1275-1298 Entire volume: VIII 1584 pp. 6 plates. First appearance of all three papers. The purpose of "A theorem in probability and its application in the Theory of radiation" is to demonstrate that the failure of statistical mechanics with respect to the radiation law Rayleigh - Jeans law contradicted by experience cannot be removed by the conjecture that perhaps the individual statistical events should not follow the usual law of independence product of probabilities instead of assuming a certain interdependence between them. Lanczos. The second paper "Statistical investigation on of the motion of an oscillator in a radiation field" makes use of the results of the previous investigation. Einstein's aim is to demonstrate that the Rayleigh-jeans law of radiation contracdicted by the physical facts is an unavoidable consequence of statistics even if we avoid any kind of assumption which may be suspected of needing correction. Lanczos. The third paper "Theory of the opalescence of homogenous fluids and fluid mixtures near the critical state" is an importent investigation and one of the most difficult of all his papers to understand. The aim of the paper is to complement the work of Smoluchovski Ann. d. Physik25 1908 who gave a general explanation of the strong density fluctuations - and the opalescence thus generated - of two fluids near the critical state of mixture or a single fluid near the critical state of condensation on the basis of the kinetic theory of heat. he did notgive howeverthe quantitative details concerning the scattered light associated with this phenomenon. Lanczos. - Weil Nos 34 35 and 36 with an asterix denoting major work.Weil No. 34 35 & 36. hardcover

Herman H. J. Lynge & Søn A/S · Danemark3 800,00 DKK≈ 510,34 €

Bose, S N [AND] A EinsteinBiblio.com

Wärmegleichgewicht im Strahlungsfeld bei Anwesenheit von Materie.

72537Braunschweig Friedrich Vierweg & Sohn; Berlin J. Springer 1924. 8vo 22.8 x 15.4 cm. 10 pp. Original printed wrappers. = First paper by the Indian physicist Satyendra Nath Bose 1894-1974 on thermal equilibrium in the radiation field in the presence of matter and second paper sent to Albert Einstein with the request to translate and publish it in a German physics journal. Einstein saw the importance of the paper but he disagreed with its contents and decided to add a lengthy comment. Subsequently Bose saw a way to circumvent Einstein's critique but never published this rebuttal. Nearly 50 years later Bose stated that he was disappointed by Einstein's remarks ".Bose had his own approach to quantum theory based on his views about the interconnectedness of spontaneous and induced emissions which formed the subject matter of his second and third papers. He did not agree with Einstein's proposal to treat them as independent physical processes. Stationary states in atoms have zero widths both in the old and the new quantum theories and therefore have infinite life-times whereas in reality they do decay and jump down to lower energy states with a finite life-time. What is the origin of these finite widths In Bose's view they are the consequence of the interaction between atom and environment as he attempted to show in his second and third papers. But Einstein did not agree and dismissed his views with the remark that in a world consisting of a single excited hydrogen atom and nothing else the atom would obviously emit a photon and come down to its ground-state! Einstein did not explain what would excite an atom in such a world. Bose was very disappointed by this simply because the world does have much more than a single hydrogen atom and inevitably every atom has an environment" Wali. Contained in: Zeitschrift für Physik volume 275-6. The complete issue in its original wrappers. Upper right corner somewhat bumped throughout. Rear wrapper slightly frayed at edges; minimal spotting at the fore and bottom edges. Volume number written on spine; otherwise a very good clean copy. Wali K. C. 2009. Satyendra Nath Bose: His Life and Times: Selected Works with Commentary p. xxvi. unknown

Antiquariaat Schierenberg · Pays-Bas500,00 €

Einstein

Filtres actifs

Siècle

Langage

Ajouté

Sujets

Catalogues

Filtres actifs

Siècle

Langage

Ajouté

Sujets

Catalogues

Filtres actifs

Siècle

Langage

Ajouté

Sujets

Catalogues