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Cuney Michel Leroy Jacques Pagel Maurice
L'uranium
Presses Universitaires de France - PUF 1992 123 pages in12. 1992. Broché. 123 pages.
Reference : 252795
ISBN : 2130446027
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5 book(s) with the same title
Géologie de l’uranium. Avec la collaboration de Georges Jurain,... Préface de Francis Perrin,...
Paris, Masson et Cie 1958 In-4. Reliure éditeur pleine toile noire, report auteur et titre en lettres rouges sur le dos et le premier plat, XI-462 pp., 203 figures, notes en bas de page, index alphabétique des auteurs, index des minéraux, index géographique. Exemplaire en très bon état.
Très bon état d’occasion
"CROOKES, WILLIAM - SEPARATING URANIUM AND CREATING URANIUM X.
Reference : 47429
(1900)
""Radio-activity of Uranium.""
(London, Harrison and Sons, 1900). Without wrappers. Extracted from ""Proceedings of the Royal Society of London"", Vol. 66. Pp. 409-422 a. 1 photographic plate.
First printing of an importent paper which pawed the way to the understanding of radioactivity. Crookes showed by using photographic plates as indicators of activity that if uranium was purified, it could be separated chemically into a nonactive portion and a radioactive portion that he called uranium X. ""In May 1900 Sir W.Crookes showed (the paper offered) that it was possible by chemical means to separate from uranium a small fraction, which he called uranium X, which possessed the whole of the photographic activity of the original substance. He found, moreover, that the activity of the uranium X gradually decayed, while the full activity of the residual uranium was gradually renewed, so that after a sufficient lapse of time it was possible to separate from it a freh supply of uranium X. These facts had an importent share in the formation of the theory (of radioactivity)."" (Whittaker ""A History of the Theories of Aether and Electricity"" Vol. II, p. 5.).
"CURIE, (MARIE) SKLODOWSKA. - THE DISCOVERY OF THE RADIOACTIVITY OF THORIUM - COINING THE TERM 'RADIOACTIVITY'
Reference : 46852
(1898)
Rayons émis par les composés de l'uranium et de thorium. Presentée par M. Lippmann. Séance du Mardi 12 Avril 1898).
Paris, Gauthier-Villars, 1898. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 126, No 15). Entire issue offered. With htitle and titlepage to vol. 126. Pp. 1059-1110. Curie's paper: pp. 1101-1103.
First printing of this milestone paper, being the first ""Note"" from Marie Curie about ""radioactivity"". This same ""Note"" contains a the fundamental observation: ""Two uranium ores... are much more active than uranium itself. This fact... leads one to believe that these ores may contain an element much more active than uranium."" This paper gives the first proof of the fact that radiation is an atomic property.""Henri Becquerel, discovered (1896) that uranium salts shielded from light for several months spontaneously emit rays related in their effects to Roentgen rays. Mme. Curie became enthusiastic about this subject filled with the unknown and, as she later acknowledged, involving no bibliographic research.The first step in the research was to determine whether there existed other elements capable, like uranium, of emitting radiation. Abandoning the idea of hyperfluorescence, couldn’t one calculate by electrical measurement the effects on the conductivity of air that were revealed by the gold-leaf electroscope? Pierre Curie and his brother Jacques had constructed an extremely sensitive apparatus to measure weak currents;"" Mme. Curie employed it in testing both pure substances and various ores. In her first """"Note"""" in the Comptes rendus""""de l Académie des sciences (12 April 1898) she described the method that she followed throughout her life, the method that enabled her to make comparisons through time and crosschecks with other techniques:""""I employed... a plate condenser, one of the plates being covered with a uniform layer of uranium or of another finely pulverized substance [(diameter of the plates, eight centimeters"";"" distance between them, three centimeters). A potential difference of 100 volts was established between the plates.]. The current that traversed the condenser was measured in absolute value by means of an electrometer and a piezoelectric quartz. In general she preferred the zero method, in which the operator compensates for the current created by the active material by manipulating the quartz. All of her students followed this procedure.""""(DSB).The first results came in 1898: the measurements varied between 83 × 10-12 amperes for pitch blende to less than 0.3 × 10-12 for almost inactive salts, passing through 53 × 10-12 for thorium oxide and for chalcolite (double phosphate of uranium and copper). Thorium would thus be """"radioactive"""" (the term is Mme. Curie’s""; its radioactive properties were discovered at the same time, independently, by Schmidt in Germany.
"CURIE, (MARIE) SKLODOWSKA. - RADIATION IS AN ATOMIC PROPERTY - COINING THE TERM 'RADIOACTIVITY'
Reference : 49598
(1898)
Rayons émis par les composés de l'uranium et de thorium. Presentée par M. Lippmann. Séance du Mardi 12 Avril 1898).
Paris, Gauthier-Villars, 1898. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 126, No 15). Entire issue offered. With htitle and titlepage to vol. 126. Pp. 1059-1110. Curie's paper: pp. 1101-1103. Clean and fine. A punched stamp in lower margin of title-page.
First printing of this milestone paper, being the first ""Note"" from Marie Curie about ""radioactivity"". This same ""Note"" contains a the fundamental observation: ""Two uranium ores... are much more active than uranium itself. This fact... leads one to believe that these ores may contain an element much more active than uranium."" This paper gives the first proof of the fact that radiation is an atomic property.""Henri Becquerel, discovered (1896) that uranium salts shielded from light for several months spontaneously emit rays related in their effects to Roentgen rays. Mme. Curie became enthusiastic about this subject filled with the unknown and, as she later acknowledged, involving no bibliographic research.The first step in the research was to determine whether there existed other elements capable, like uranium, of emitting radiation. Abandoning the idea of hyperfluorescence, couldn’t one calculate by electrical measurement the effects on the conductivity of air that were revealed by the gold-leaf electroscope? Pierre Curie and his brother Jacques had constructed an extremely sensitive apparatus to measure weak currents;"" Mme. Curie employed it in testing both pure substances and various ores. In her first """"Note"""" in the Comptes rendus""""de l Académie des sciences (12 April 1898) she described the method that she followed throughout her life, the method that enabled her to make comparisons through time and crosschecks with other techniques:""""I employed... a plate condenser, one of the plates being covered with a uniform layer of uranium or of another finely pulverized substance [(diameter of the plates, eight centimeters"";"" distance between them, three centimeters). A potential difference of 100 volts was established between the plates.]. The current that traversed the condenser was measured in absolute value by means of an electrometer and a piezoelectric quartz. In general she preferred the zero method, in which the operator compensates for the current created by the active material by manipulating the quartz. All of her students followed this procedure.""""(DSB).The first results came in 1898: the measurements varied between 83 × 10-12 amperes for pitch blende to less than 0.3 × 10-12 for almost inactive salts, passing through 53 × 10-12 for thorium oxide and for chalcolite (double phosphate of uranium and copper). Thorium would thus be """"radioactive"""" (the term is Mme. Curie’s""; its radioactive properties were discovered at the same time, independently, by Schmidt in Germany.
Recherches sur L'Uranium.
(Paris, Fortin, Masson et Cie, 1842). No wrappers, as extracted from: ""Annales de Chimie et de Physique, Par MM. Gay-Lussac et Arago et al."", Troisieme Ser., tome 5, pp. 5-46. With halftitle to volume 5.
Peligot, professor of applied chemistry in the Conservatoire des Arts et Métiers, was the first to isolate Uranium in 1841. The paper offered is his long account of the process and the history of the chemistry of Uranium. The process of isolation was first recorded in 1841 in ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"".He ""showed that what was regarded as metallic uranium was the dioxide UO2, and first prepared the metal. He treated Uranium oxychloride mixed withcarbon in a stream of chlorine, when carbon dioxide and monoxide were evolved and uranium tetrachloride was formed. This ws reduced to the metal by heating it with potassium.""(Partington IV, p. 362).
