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CHARLES AUGUSTIN COULOMB (1736-1806)

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Originally appearing in Volume V07, Page 308 of the 1911 Encyclopedia Britannica.
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CHARLES AUGUSTIN See also:COULOMB (1736-1806)  , See also:French natural philosopher, was See also:born at See also:Angouleme on the 14th of See also:June 1736 . He See also:chose the profession of military engineer, spent three years, to the decided injury of his See also:health, at Fort See also:Bourbon, See also:Martinique, and was employed on his return at Rochelle, the Isle of See also:Aix and See also:Cherbourg . In 1781 he was stationed permanently at See also:Paris, but on the outbreak of the Revolution in 1789 he resigned his See also:appointment as See also:intendant See also:des eaux et fontaines, and retired to a small See also:estate which he possessed at See also:Blois . He was recalled to Paris for a See also:time in See also:order to take See also:part in the new determination of weights and See also:measures, which had been decreed by the Revolutionary See also:government . Of the See also:National See also:Institute he was one of the first members; and he was appointed inspector of public instruction in 1802 . But his health was already very feeble, and four years later he died at Paris on the 23rd of See also:August 18o6 . See also:Coulomb is distinguished in the See also:history alike of See also:mechanics and of See also:electricity and See also:magnetism . In 1779 he published an important investigation of the See also:laws of See also:friction (Theorie des See also:machines simples, en ayant regard an frottement de leurs parties et a la roideur des cordages) , which was followed twenty years later by a memoir on fluid resistance . In 1785 appeared his Recherches theoriques et experimentales sur la force de torsion et sur l'elasticitedes fils de See also:metal, &c . This memoir contained a description of different forms of his torsion See also:balance, an See also:instrument used by him with See also:great success for the experimental investigation of the See also:distribution of electricity on surfaces and of the laws of See also:electrical and magnetic See also:action, of the mathematical theory of which he may also be regarded as the founder . The See also:practical unit of quantity of electricity, the coulomb, is named after him .

End of Article: CHARLES AUGUSTIN COULOMB (1736-1806)
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