![]() ![]() This they called Polonium in honour of Marie's native Poland. First they isolated a new substance about three hundred times as active as radium. They reported their researches in a series of papers from 1897 in the Comptes rendus. "The Curie's owned their success to an extremely sensitive electroscopic apparatus constructed by Pierre and his brother Jacques, which made possible a "new method of chemical analysis based on the precise measurement of radium emitted, a method still in use."(DSB).īecquerel's discovery of the radioactive properties of uranium (1896) inspired Marie and Pierre Curie to investigate radiation. ![]() The "Becquerel Rays" were later discovered to be a composite of three forms of emanation, distinguished by Rutherford as alpha, beta and gamma rays.ĭibner: 163 (the later Mémoire from 1903) - PMM: 393 (1903- Mémoire) - Garrison & Morton: 2001 (only the first paper). He shared the Nobel Prize for Physics in 1903 with Marie and Pierre Curie. He had, by chace, discovered radio-activity and prompted thee beginning of the nuclear age. After several chemical tests he concluded that these "Becquerel rays" were a property of atoms. he noticed that the photographic plate also had a a faint image of the pechblende. However, by chace, he left a sample that had not been exposed to light on top of a photographic plate in a drawer. He exposed a fluorescent uranium salt, pechblende, to light and then placed it on a wrapped photographic plate.He found that a faint image was left on the plate, which he believed was due to the pichblende emitting the light it had absorbed as a more penetrating radiation. Follwing the discovery of X-rays by Röntgen, Bexquerel investigated fluorescent materials to see if they also emitted X-rays. Internally clean and fine.įirst appearance of the landmark papers in which Becquerel documents his discovery of Radio-activity, PROMPTING THE NUCLEAR AGE, and the papers which the Curies announced the discoveries of the 2 elements Polonium and Radium.īecquerel was an expert in fluorescence and phosphorescence, continuing the work of his father and grandfather. Title-pages with a punched stamp to lower margin. In: "Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences", Tome 122 a. hcloth, spines gilt and with gilt lettering. Eugène Demarçay: Sur le spectre d'une substance radio-active.Ĥto. Marie Curie, Pierre Curie, Gustave Bémont: Sur une nouvelle substance fortement radio-active, contenue dans pechblende. Marie Curie & Pierre Curie: Sur une substance nouvelle radio-active, contenue dans la pechblende 8. Becquerel: Émission de radiations nouvelles par l'uranium métallique. ![]() Becquerel: Sur propriétés differentes des radiations invisibles émises par les sels d'uranium, et du rayonnement de la paroi anticathodique d'un tube de Crookes. Becquerel: Sur les radiations invisibles émises par les sels d'uranium. Becquerel: Sur quelques propriétés nouvelles des radiations invisibles émises par divers corps phosphorescents. Becquerel: Sur les radiations invisibles émises par les corps phosphorescents. Becquerel: Sur les radiations émises par phosphorescence. (Nine papers documenting the discovery of radioactivity, the discovery of Radium and Polonium:) 1. THE DISCOVERY OF RADIOACTIVITY, RADIUM & POLONIUM DISCOVERED. And passed up the food chain to humans.)/Rect/Subj(Typewritten Text)/Subtype/FreeText/T(erk0303)/Type/Annot>endobj149 0 objendobj150 0 0 objendobj152 0 objendobj153 0 objstream
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