SIBENALER N.Livre Rare Book
3 605 résultats
1906réf. W100209Louvain, Uytspruyt-Dieudonné 1906 Complet en 2 tomes, Tome I: 323pp + 36 planches dépliantes, Tome II: 303pp.+ 15pp. de tableaux + 20 planches dépliantes, 4e édition, 25cm., reliures cart. d'époque uniformes et en bon état (plats marbrés, dos en cuir avec titre doré), feuilles de garde marbrées, peu de rousseurs, bon état, W100209
1926réf. 47142Paris, Gauthier-Villars et Cie, 1926. 4to. Without wrappers. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 183, No 1. Pp. (5-) 100. (Entire issue offered). Brillouin's paper: pp. 24-26.
1926réf. 47142Paris Gauthier-Villars et Cie 1926. 4to. Without wrappers. In: "Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences" Tome 183 No 1. Pp. 5- 100. Entire issue offered. Brillouin's paper: pp. 24-26. First appearance of Brillouin's importent paper in which he introduced the WKB-method in quantum Mechanics."In 1925 Brillouin was the only French theoretician to react competently to Werner Heisenberg’s new matrix mechanics. In two papers published in 1926 he contributed to the exploration of the mathematical content of Heisenberg’s theory. Brillouin’s first contribution in this field was important the paper offered. Through a new method of semiclassical approximation he discovered the relation between Schrodinger’s mechanics and the quantum theory of Niels Bohr and Sommerfeld. Presumably inspired by de Broglie’s early analogies between mechanics and optics he found this approximation as the quantum mechanical countet of the approximation. In this procedure stationary solutions of the Schrödinger equation are sought in the form eiS/h as in the eikonal approximation of optics. In the first approximation h small S must be a solution of the Hamilton-Jacobi equation of classical mechanics and the Bohr-Sommerfeld conditions S = 2pnh on a closed trajectory must be satisfied for the W function to be defined and singlevalued in all space. Subsequent corrections are proportional to successive powers of h. They intermix the various Bohr trajectories. thereby reintroducing the complex interplay of quantum states found in matrix mechanics This method published by Brillouin in July 1926 - anticipated by Harold Jeffreys in 1923 in a purely mathematical context reinvented by Gregor Wentzel in September 1926. and perfected by Hendrik Kramers in November 1926 - is now called the J BWK method and is widely used in many quantum mechanical problems."DSB.See also Max Jammer "The Conceptual development of Quantum Mechanics" pp. 277 ff. unknown
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