BECQUEREL, Henri (1852-1908). "Sur les radiations émises par phosphorescence" (pp.420-421) -- "Sur les radiations invisibles émises par les corps phosphorescence" (pp.501-502) -- "Sur quelques propriétés nouvelles des radiations invisibles émises par divers corps phosphorescents" (pp.559-564) -- "Sur les radiations invisibles émises par les sels d'uranium" (pp.689-694) -- "Sur les propriétés différentes des radiations invisibles émises par les sels d'uranium, et du rayonnement de la paroi anticathodique d'un tube de Crookes" (pp.762-767) -- "Émission de radiations nouvelles par l'uranium métallique" (pp.1086-1088). In: Comptes rendus des séances de l'Académie des Sciences , Vol. 122, January-June 1896. Paris: Gauthier-Villars et fils, 1896. 4 o (283 x 225 mm). (Some scattered pale foxing.) Original plain wrappers, paper spine label, uncut and unopened (few chips). THE DISCOVERY OF RADIOACTIVITY FIRST EDITION, journal issue, OF THE SIX ARTICLES DOCUMENTING BECQUEREL'S IMPORTANT RESEARCH ON URANIUM. Inspired by Röntgen's discovery of x-rays in late 1895, Becquerel undertook his own investigations. On February 24 1896, he announced to the French Academy of Sciences that fluorescent crystals of potassium uranyl sulfate had exposed a photographic plate wrapped in black paper after both had lain for several hours in direct sunlight. His paper on 3 March "reported the astonishing fact that uranium was capable of fogging photographic plates even without the previous exposure to sunlight" (PMM). He determined in the following months that only crystals containing uranium emitted the penetrating rays, that nonluminescent compounds of uranium also produced radiation and that the rays were capable of ionizing gases. His investigations suggested to the Curies the importance of further investigations of the ore, with the result that they discovered radium. The present volume of Comptes rendus contains well over 100 papers devoted to various aspects of x-rays and radioactivity. Garrison-Morton 2001; Grolier Medicine 84a; Norman 157; PMM 393 (collected edition, 1903). A FINE COPY IN ORIGINAL WRAPPERS.
BECQUEREL, Henri (1852-1908). "Sur les radiations émises par phosphorescence" (pp.420-421) -- "Sur les radiations invisibles émises par les corps phosphorescence" (pp.501-502) -- "Sur quelques propriétés nouvelles des radiations invisibles émises par divers corps phosphorescents" (pp.559-564) -- "Sur les radiations invisibles émises par les sels d'uranium" (pp.689-694) -- "Sur les propriétés différentes des radiations invisibles émises par les sels d'uranium, et du rayonnement de la paroi anticathodique d'un tube de Crookes" (pp.762-767) -- "Émission de radiations nouvelles par l'uranium métallique" (pp.1086-1088). In: Comptes rendus des séances de l'Académie des Sciences , Vol. 122, January-June 1896. Paris: Gauthier-Villars et fils, 1896. 4 o (283 x 225 mm). (Some scattered pale foxing.) Original plain wrappers, paper spine label, uncut and unopened (few chips). THE DISCOVERY OF RADIOACTIVITY FIRST EDITION, journal issue, OF THE SIX ARTICLES DOCUMENTING BECQUEREL'S IMPORTANT RESEARCH ON URANIUM. Inspired by Röntgen's discovery of x-rays in late 1895, Becquerel undertook his own investigations. On February 24 1896, he announced to the French Academy of Sciences that fluorescent crystals of potassium uranyl sulfate had exposed a photographic plate wrapped in black paper after both had lain for several hours in direct sunlight. His paper on 3 March "reported the astonishing fact that uranium was capable of fogging photographic plates even without the previous exposure to sunlight" (PMM). He determined in the following months that only crystals containing uranium emitted the penetrating rays, that nonluminescent compounds of uranium also produced radiation and that the rays were capable of ionizing gases. His investigations suggested to the Curies the importance of further investigations of the ore, with the result that they discovered radium. The present volume of Comptes rendus contains well over 100 papers devoted to various aspects of x-rays and radioactivity. Garrison-Morton 2001; Grolier Medicine 84a; Norman 157; PMM 393 (collected edition, 1903). A FINE COPY IN ORIGINAL WRAPPERS.
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