‎BECQUEREL (E.)‎
‎Mémoire sur l'analyse de la lumière émise par les composés phosphorescents lu dans la séance du 5 Août 1872 -- EDITION ORIGINALE -- TIRE-A-PART (OFFPRINT)‎

‎P., Firmin-Didot, 1876, un volume in 4, broché, couverture muette de l'époque, (petites déchirures sans manque de papier dans la marge du titre), (1), 40pp. ‎

Reference : 332

‎---- EDITION ORIGINALE ---- TIRE-A-PART (OFFPRINT) des mémoires de l'Académie des sciences, tome 40. ---- "E. Becquerel was the second son of A.C. Becquerel, experimental physicist and professor at the Muséum d'histoire naturelle. After having served as assistant at the University of Paris and then professor of physics at the short-lived Institut agronomique de Versailles, Becquerel was appointed to the chair of physics at the Conservatoire des Arts et Métiers. From 1860 to 1863, he taught chemistry at the Société chimique de Paris. He succeeded his father as director of the Museum. His most important achievements in science were in electricity, magnetism and optics on the phenomena of luminescence. In 1843 he demonstrated that phosphorescence was stimulated in different substances by specific frequencies of light and that at some frequencies the phosphorescent glow seemed to stop immediately after the cutting off of incident light rays...". (DSB I pp. 555/556). C'EST EN REPRENANT CES RECHERCHES SUR LE MEME SUJET QU'HENRI BECQUEREL DECOUVRIRA LA RADIOACTIVITE**332.K1‎