DE BROGLIE, L'Électron Magnétique (Théorie de Dirac), 1934

First edition.
Louis de Broglie (1892-1987), Nobel laureate and a member of the Institute, played a crucial role in the development of quantum mechanics. In this work, he explores the theory of the magnetic electron proposed by Paul Dirac, one of the most important advances in 20th-century theoretical physics. Dirac's theory not only predicted the existence of antimatter but also integrated special relativity into quantum mechanics.