‎LANGEVIN, P. (PAUL). - THE DOCTORAL DISSERTATION.‎
‎L'Ionisation des Gaz. (Chapter titles: I. L'Ionisation par les Rayons de Röntgen. II. L'Ionisation par les Rayons cathodiques.III. Recombination et Mobilités des Ions dans les Gaz" La Recombinaison des Ions).‎

‎Paris, Masson et Cie, 1903. 8vo. Bound with original printed yellow wrappers in contemp. hcalf, raised bands, gilt spine. Light wear along edges. Small stamps on verso of titlepage, on printed frontwrappers and on foot of p. 576. In ""Annales de Chimie et de Physique"", 7me Series - Tome XXVIII. (Entire volume offered). 576 pp., textillustrations. Langevin's paper: pp. 289-384 (Chapitre I-II) and pp. 433-530 (Chapitre III). Internally clean and fine.‎

Reference : 44892

‎First printing of Langevin's doctoral dissertation on X-rays and on the ionization of gases.Einstein wrote about Langevin : ""Langevin’s scientific thought displayed an extraordinary clarity and vivacity combined with a quick and sure intuition for the essential point. Because of those qualities, his courses exerted a decisive influence on more than a generation of French theoretical physicists..... It seems to me certain that he would have developed the special theory of relativity if that had not been done elsewhere, for he had clearly recognized its essential points."" ‎