‎TYNDALL, John - [Sainte-Claire Deville]‎
‎On radiation‎

‎The Quantum Theory of Emission and Absorption of Radiation. (+) The Quantum Theory of Dispersion. (2 Papers).‎

‎London, Harrison And Sons, Ltd., 1927. Royal8vo. Contemp. full cloth. A small stamp on verso of titlepage. In: ""Proceedings of the Royal Society of London"", Series A, Vol. 114. VI,IX,748 pp. (entire volume offered). Dirac's papers: pp. 243-265 a. pp. 710-728. Clean and fine.‎

‎First appearance of these milestone papers in Quantum Physics, constituting the first step in Quantum Field Theory and the invention of the Second Quantifization Method. By these papers Dirac ""gave the foundation for that theory, quantum electrodynamics""(Pais).""A New Radiation Theory. Dirac liked his transformation theory because it was the outcome of a planned line of research and not a fortuitous discovery. He forced his future investigations to fit it. The first results of this strategy were almost miraculous. First came his new radiation theory, in February 1927, which quantized for the first time James Clerk Maxwell’s radiation in interaction with atoms. Previous quantum-mechanical studies of radiation problems, except for Jordan’s unpopular attempt, retained purely classical fields. In late 1925 Jordan had applied Heisenberg’s rules of quantization to continuous free fields and obtained a light-quantum structure with the expected statistics (Bose Einstein) and dual fluctuation properties. Dirac further demonstrated that spontaneous emission and its characteristics—previously taken into account only by special postulates—followed from the interaction between atoms and the quantum field. Essential to this success was the fact that Dirac’s transformation theory eliminated from the interpretation of the quantum formalism every reference to classical emitted radiation, contrary to Heisenberg’s original point of view and also to Schrödinger’s concept of ? as a classical source of field.This work was done during Dirac’s visit to Copenhagen in the winter of 1927. Presumably to please Bohr, who insisted on wave-particle duality and equality, Dirac opposed the ""corpuscular point of view"" to the quantized electromagnetic ""wave point of view."" He started with a set of massless Bose particles described by symmetric ? waves in configuration space. As he discovered by’ playing with the equations, ’ this description was equivalent to a quantized Schrödinger equation in the space of one particle"" this’ second quantization’ was already known to Jordan, who during 1927 extended it into the basic modern quantum field representation of matter. Dirac limited his use of second quantization electromagnetic to radiation: to establish that the corpuscular point of view, once brought into this form, was equivalent to the wave point of view.""(DSB).‎

‎The Quantum Theory of Radiation (Third Edition)‎

‎Dover Malicorne sur Sarthe, 72, Pays de la Loire, France 1984 Book condition, Etat : Bon broché, editor's black, purple and blue illustrated wrappers In-8 1 vol. - 443 pages‎

‎37 text-figures 1984's Dover edition, unabridged and unaltered republication of the first English edition published by Oxford U.P. in 1954 (First German was 1936) "Contents, Chapitres : Préface to the Third Edition, Contents, Introduction, xiii, Text, 430 pages and Dover catalogue - Classical theory of radiation - Quantum theory of the pure radiation field - The electron field and its interaction with radiation - Methods of solution - Radiation processes in first approximation - Radiative corrections, ambiguous features - Penetrating power of high-energy radiation - Appendix - List of references, subject index - Walter Heinrich Heitler est né le 2 janvier 1904 à Karlsruhe en Allemagne. Il obtient son doctorat à Munich en 1926. En 1933, il quitte l'Allemagne pour le Royaume-Uni avec un poste d'assistant de recherche à Bristol où il reste jusqu'en 1941. En 1941, il obtient un poste de professeur à l'Institut d'études avancées de Dublin, dont il prend la direction en 1949 à la suite d'Erwin Schrödinger. En 1949, il s'installe en Suisse avec un poste de professeur et de directeur de l'Institut de physique théorique de l'Université de Zurich qu'il occupe jusqu'à la fin de sa carrière en 1974. - La première explication de la liaison covalente basée sur la mécanique quantique est basée sur les travaux de Heitler. En 1927, celui-ci calcule avec Fritz London l'interaction de deux atomes d'hydrogène. La valeur qu'ils obtiennent est très proche de l'énergie de liaison de la molécule d'hydrogène. Ses résultats sont à la base des travaux de Linus Pauling sur la nature de la liaison chimique. Dans le domaine de l'électrodynamique quantique, ses premiers travaux effectués en collaboration avec Hans Bethe à Bristol concernent l'émission de paires de rayons gamma dans le champ coulombien des noyaux atomiques (formule de Bethe-Heitler). Ils aboutissent à son livre ""Quantum Theory of Radiation"" (théorie quantique des rayonnements) en 1936. Pour la première fois, la théorie quantique des interactions rayonnement-matière est traitée d'un point de vue unifié, et appliquée à de nombreux phénomènes physiques. En 1938, les travaux qu'il effectue en collaboration avec Fröhlich et Kemmer permettent de prédire l'existence du méson p0. Peu après, il développe une théorie d'amortissement des rayonnements qui conduit à l'équation intégrale de Heitler qui décrit les processus de diffusion. En 1946, il publie des travaux qui font avancer la compréhension des interactions méson - nucléon en décrivant les relations entre leurs sections efficaces. En 1968, il est lauréat de la médaille Max-Planck. (source : Wikipedia)" wrappers very lightly yellowing, with minor folding tracks on the corners, a small dark spot on the top of the first page, else near fine copy, inside is clean, no markings, a very good reading copy - Dover Edition‎

‎Stimulated Optical Radiation in Ruby (+) Optical and Microwave-Optical Experiments in Ruby. - [THE FIRST OPERATING LASER]‎

‎London, Macmillan, 1960" (New York), American physical Society, 1960. [Stimulated Optical Radiation in Ruby:] Lex8vo. As extracted from Nature. Fine and clean. Pp. 493-4 (one leaf). [Optical and Microwave-Optical Experiments in Ruby:] Lex8vo. Entire issue of ""Physical Review Letters, Volume 4, Number 11, June, 1960"" in the original blue/green wrappers. A very nice and clean copy. [Maiman:] Pp.564-66. [Entire issue: Pp. 555-598].‎

‎First printing of these two fundamental papers in the history of the laser, which described the first operating laser. ""[Stimulated Optical Radiation in Ruby] might be considered the most important per word of any of the wonderful papers in Nature over the past century"" (Garwin. A century of Nature. P. 107).""Maiman made the first laser operate on 16 may 1960 at the Hughes Research Laboratory in California, by shining a high-power flash lamp on a ruby rod with silver-coated surfaces. He promptly submitted a short report on the work (Stimulated Optical Radiation in Ruby) to the journal Physical Review Letters, but the editors turned it down."" (Ibid.). Maiman turned to Nature where the paper was better received and published on 6 August. It was turned down by Physical Review Letters because Maiman in June 1960 had submitted a paper with a similar topic (Optical and Microwave-Optical Experiments in Ruby). ""While lasers quickly caught the public imagination, perhaps for their similarity to the 'heat rays' of science fiction, practical applications took years to develop. A young physicist named Irnee D'Haenens, while working with Maiman on the ruby laser, joked that the device was 'a solution looking for a problem,' and the line lingered in the laser community for many years"" (Britannica).The development of the laser was essentially built upon the insights discovered by Albert Einstein in 1917 in his ""Zur Quantentheorie der Strahlung"". Einstein had shown theoretically that stimulated emission of electromagnetic radiation, a re-derivation of Max Planck's law of radiation, would make an atom or molecule to fall to a lower energy state and emit more waves. The development of the laser is not only of seminal importance in itself, it is also a testament to a period in which many of the achievements within theoretical physics reached in the early part of the 20th century went from being theoretical to applied. ‎

‎Kment W. Kun A. Radiation Measurement Technique. In Russian (ask us if in doub‎

‎Kment W. Kun A. Radiation Measurement Technique. In Russian (ask us if in doubt)/Kment V. Kun A. Tekhnika izmereniya radioaktivnykh izlucheniy. Science. 1964. 1027g. The book contains a great deal of theoretical and practical material on radiation detectors electronic diagrams of radiation counters power sources and various applications of calculating instruments. The compressed layout a large number of drawings and diagrams and a large bibliography make the book a good reference both for choosing and designing a variety of instruments for recording and measuring nuclear radiation. SKUalbd79bf44756f4b88a.‎

‎Über die Quantentheorie der Strahlung. (The quantum theory of radiation). - [TOWARDS QUANTUM MECHANICS]‎

‎Braunschweig, Berlin, Vieweg & Sohn u. Julius Springer, 1924. 8vo. Bound in contemporary halfcloth. In ""Zeitschrift für Physik"", Bd. 24. (Entire volume offered). A stamp on titlepage otherwise fine and clean. Pp.69-87. [Entire volume: IV,412 pp].‎

‎First apperance (simultaneously printed in Philosophical Magazine) of a fundamental paper in the development of the Quantum Theory, as it here was set forth three fundamental ideas: 1. Slater's idea of 'a Virtual radiation field', 2. statistical conservation of energy and momentum, and 3. statistical independence of the processes of emission and absorption in distant atoms. (See Van der Waerden ""Sources of Quantum Mechanics"" No. 5).""In an effort to reconcile the particulate and wavelike properties of radiation, Bohr, Kramers, and Slater in 1924 formulated a new quantum theory of radiation. According to their hypothesis, momentum and energy-are conserved only statistically in interactions between radiation and matter."" (DSB).The present paper became a great influence to Bothe and his Compton collisions and the Coincidence method which eventually resulted in him being awarded the Nobel Prize in Physics.‎