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JEAN BAPTISTE BIOT (1774-1862)

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Originally appearing in Volume V03, Page 957 of the 1911 Encyclopedia Britannica.
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JEAN See also:BAPTISTE See also:BIOT (1774-1862)  , See also:French physicist, was See also:born at See also:Paris on the 21st of See also:April 1774 . After serving for a See also:short See also:time in the See also:artillery, he was appointed in 1797 See also:professor of See also:mathematics at See also:Beauvais, and in 1800 he became professor of physics at the See also:College de See also:France, through the See also:influence of See also:Laplace, from whom he had sought and obtained the favour of See also:reading the See also:proof sheets of the Mecanique See also:celeste . Three years later, at an unusually See also:early See also:age, he was elected a member of the See also:Academy of Sciences, and in 1804 he accompanied See also:Gay Lussac on the first See also:balloon ascent undertaken for scientific purposes . In 18o6 he was associated with F . J . D . See also:Arago, with whom he had already carried out investigations on the refractive properties of different gases, in the measurement of an arc of the See also:meridian in See also:Spain, and in subsequent years he was engaged in various other See also:geodetic determinations . In 1814 he was made See also:chevalier and in 1849 See also:commander, of the See also:Legion of See also:Honour . He failed in his ambition of becoming perpetual secretary of the Academy of Sciences, but was somewhat consoled by his See also:election as a member of the French Academy in 1856 . He died in Paris on the 3rd of See also:February 1862 . His researches extended to almost every See also:branch of See also:physical See also:science, but his most important See also:work was of an See also:optical See also:character . He was especially interested in questions See also:relating to the polarization of See also:light, and his observations in this See also:field, which gained him the See also:Rumford See also:medal of the Royal Society in 1840, laid the See also:foundations of the polarimetric See also:analysis of See also:sugar .

See also:

Biot was an extremely prolific writer, and besides a See also:great number of scientific See also:memoirs, See also:biographies, &c., his published See also:works include: Analyse de la mecanique celeste de M . Laplace (18or) ; Traite analytique See also:des courbes et des surfaces du second degre (1802); Recherches sur l'integration des equations differentielles'partielles et sur See also:les vibrations des surfaces (1803); Traite de physique (1816) ; Recueil d'observations geodesiques, astronomiques et physiques executees en Espagne et Ecosse, with Arago (1821); Memoire sur la vraie constitution de l'See also:atmosphere terrestre (1841); Traite elementaire d'astronomie physique (18o5); Recherches ,See also:sus . plusieurs points de l'astronomie egyptiennc (1823); Recherches sur l'ancienne astronomie chinoise (184o); Etudes sur l'astronomie indienne et sur l'astronomie chinoise (1862); Essai sur l'histoire generale des sciences See also:pendant la Revolution (1803); Discours sur See also:Montaigne (1812); Lettres sur l'approvisionnement de Paris et sur le See also:commerce des grains (1835); Melanges scientifiques et litteraires (1858) . His son, EDOUARD See also:CONSTANT BIOT (1803-1850), after amassing a competence from railway See also:engineering, turned to,the study of See also:Chinese subjects, and published Causes de l'abolition de l'esclavage ancien en occident (1840); Dictionnaire des noms anciens et modernes des villes et des arrondissements compris daps l'See also:empire chinois (1842); Essai sur l'histoire de l'instruction publique en Chine et de la See also:corporation des lettres (1847); Memoire sur les colonies militaires et agricoles des chinois (185o) .

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