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Ondes et Mouvements. - BROGLIE, Louis Victor, Duc de - 1926. 
Paris: Gauthiers-Villars et Cie, Editeurs, Libraires de Bureau des Longitudes, de l'Ecole Polytechnique,, 1926. Collection de Physique Mathematique. Directeurs; Emile Borel et Marcel Brillouin. Fascicule 1. Octavo. Original green wrappers, printed in black. Original publisher's ticket to first blank. Wrappers toned around spine and edges as usual, ends and extremities a little rubbed, a few very minor ink marks to wrappers, leaves a little toned, gutter weak between p.32-3, a very good copy of a fragile production. First edition, first printing, of this revolutionary proposition for the world of physics by Louis-Victor-Pierre-Raymond, 7th Duc de Broglie (1892-1987). "The simple atoms of Dalton had already been modified before 1926 by the discoveries of radio-activity and the splitting of the atom; but now the Duc de Broglie - in 'Waves and Movements' - proposed an even more radical amendment. Light had been shown to behave as though it were waves and also as though it were particles; matter had been always supposed to be made up of particles, but perhaps it shared the duality of light. Perhaps indeed there might be circumstances in which matter might behave as though it were a wave. This idea was tested and confirmed by Davisson and Germer in 1927. They directed a beam of electrons on to a crystal of metal, and found that instead of bouncing off, as particles would, the beam was diffracted; just as the X-rays had been in the experiments of von Laue and the Braggs. Electron diffraction has since become a useful tool for the discovery of structures. Thus the duality of both light and matter had been established, and physicists had to come to terms with fundamental particles which defied simple theories and demanded two sets of 'complementary' descriptions, each applicable under certain circumstances, but incompatible with one another." (PMM). A nice copy of this fragile but highly important production in the original wrappers, with the contemporary ownership inscription of a W. von Berg to half-title, and a few marginal comments and calculations to the text in manuscript.
[Bookseller: Peter Harrington]
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