Lot 811
811
BECQUEREL, H. -- COLLECTION of six early papers on radioactivity from "Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences". Paris, Acad. des Sciences, 1896-1901. (40) pp. 4°. Mod. brds. (W. stamps, sl. tone-aged).
Sur diverses proprietés des rayons uraniques (1896, pp. 855-859); Sur la dispersion anomale de la vapeur de sodium incandescente, et sur quelques conséquences de ce phenomene (1899, pp. 145-151); Recherches sur les phénomenes de phosphorescence produits par le rayonnement du radium (1899, p. 912-917); Sur quelques observations faites avec l'uranium a de très basses températures (1900, pp. 199-202); Sur le rayonnement des corps radio-actifs (1899, pp. 1205-1207) Sur la radioactivité de l'uranium (1901, pp. 977-980). - A nice collection of some of the earliest papers on radioactivity; the first paper published in the year radioactivity was discovered, the others of the years immediately following that discovery. Henri Becquerel (1852-1909) first observed that rays emitted spontaneously from the disintegration of apparently solid substances. Soon afterwards he noted that certain uranium compounds emitted radiations after exposure to sunlight, and that these radiations could pass through plates of aluminium. - Cf. PMM 393.€ 300
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