BOHR, Les spectres et la structure de l'atome, 1923

First french edition.
Niels Bohr (1885-1962) was a Danish physicist, and winner of the 1922 Nobel Prize in Physics. He is one of the founders of quantum mechanics. This work is a translation of three lectures given by Bohr on the atomic model he developed. It explains the fundamental principles of quantum mechanics and its application to understanding atomic spectra and the structure of the atom.