5 books for « dirac paul »Edit

‎The Quantum Theory of the Electron - [FIRST ANNOUNCEMENT OF THE DIRAC EQUATION]‎

‎London, Harrison and Sons, 1928. Royal8vo. In the original printed wrappers. In ""Proceedings of the Royal Society of London, Series A, Vol. 117, No. 778"". Black cloth backstrip pasted on to spine, otherwise a fine copy (without institutional stamps). [Dirac's paper:]Pp 610-624. [Entire issue:] Pp. 541-730, (2), XXXVI, X + 6 plates.‎

‎First printing of Dirac's landmark paper in which he unified quantum mechanics and relativity and implied the existence of antimatter now known as the Dirac Equation"" one of the great triumphs of theoretical physics which brought him on a par with the works of Newton, Maxwell, and Einstein before him. In 1933 he was awarded the Nobel Price in Physics ""for the discovery of new productive forms of atomic theory"", a direct consequence of the present paper. ""[The Dirac Equations] ranks among the highest achievements of twentieth-century science"" (Pais, Inward Bound, p. 290).""In the Dirac equation not only quantum mechanics and the special theory of relativity were married, but also the spin of the electron is contained in it without any ad hoc assumption. But the equation not just beautifully described known phenomena, it did more. It predicted the existence of electrons with negative energy. This was at first held to be a severe problem of the theory but was finally understood as great progress, because negative-energy electrons could be interpreted as hitherto unknown particles. Thus, the existence of new particles was predicted which had all properties of the electron except for the electric charge. These particles were indeed found four years after the equation. Dirac is often quoted to have said that his equation 'contains most of physics and all of chemistry'."" (Brandt, The Harvest of a Century).""Even with the many successful applications of quantum mechanics to spectroscopy and other areas of physics, the theory was not without problems. There was, for example, the question of the relationship between relativity and quantum mechanics. If quantum mechanics was really a fundamental theory of the microcosmos, it ought to be consistent with the fundamental theory of macroscopic bodies, the (special) theory of relativity. Yet it was obvious from the very beginning that this was not the case. It was not too difficult to construct a relativistic quantum wave equation, such as Schrödinger had already done privately and as Oskar Klein, Walter Gordon, and several other physicists did in 1926-27. Unfortunately, this equation, known as the Klein-Gordon equation, did not result in the correct fine structure of hydrogen and it proved impossible to combine it with the spin theory that Pauli had proposed in 1927. The solution appeared in January 1928, when Dirac published his classical paper on 'The Quantum Theory of the Electron', which included a relativistic wave equation that automatically incorporated the correct spin. Dirac's equation was of the same general form as Schrödinger's equation [...] and included matrices with four rows and four columns"" correspondingly the Dirac wave function had four components. Most remarkably, without introducing the spinning electron in advance, the equation contained the correct spin. In a certain, unhistorical sense, had spin not been discovered empirically, it would have turned up deductively from Dirac's theory. The new theory was quickly accepted when it turned out that the Dirac eigenvalue equation for a hydrogen atom resulted in exactly the same energy equation that Sommerfeld had derived in 1916. Dirac's relativistic wave equation marked the end of the pioneering and heroic phase of quantum mechanics, and also marked the beginning of a new phase"" (Kragh, Quantum Generations, p. 167)‎

‎Les principes de la mécanique quantique‎

‎Paris, Les presses universitaires de France, 1931, , VIII-314 pp, demi-toile grise de l'éditeur, plats cartonnés imprimés en noir, Traduit par AL. Proca et J. Ullmo. Première édition française du fameux ouvrage de Paul Adrien Maurice Dirac (1902-1984), The Principles of Quantum Mechanics paru en 1930. Dans cet ouvrage, Dirac, qui est l'un des pères de la mécanique quantique, utilise l'algèbre des opérateurs linéaires comme une généralisation des théories d'Heisenberg et de Schrödinger. Cet ouvrage fait partie de la collection "Recueil des conférences-rapports de documentation sur la physique" (Vol.21). Il partage le prix Nobel de physique en 1933 avec Erwin Schrödinger pour « la découverte de formes nouvelles et productives de la théorie atomique » Couverture rigide‎

‎Bon VIII-314 pp.‎

‎Energy of the Gravitational Field.‎

‎(New York), American physical Society, 1959. Lex8vo. Volume 2, No. 8, April 15, 1959 of ""Physical Review Letters"", entire volume offered. In the original printed blue wrappers. Previous owner's name to top right corner of front wrapper written with a soft pencil. A very nice and clean copy externally as well as internally. Pp. 368-71. [Entire issue: Pp. 329-381].‎

‎First printing of Dirac's paper, a later publication of his speech to the New York Meeting of the American Physical Society in early 1959 in which he applies the Hamiltonian form of gravitational theory to Einstein's general relativity. Dirac made fundamental contributions to the early development of both quantum mechanics and quantum electrodynamics. He shared the Nobel Prize in physics in 1933 with Erwin Schrödinger, ""for the discovery of new productive forms of atomic theory.""‎

‎Les Principes de la Mécanique Quantique.‎

‎Editions Jacques Gabay Paris 1990 In-8 ( 240 X 160 mm ) de VIII-314 pages, broché sous couverture imprimée. Très bel exemplaire.‎

‎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).‎