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HACHETTE, JEAN NICOLAS PIERRE (1769-1...

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Originally appearing in Volume V12, Page 793 of the 1911 Encyclopedia Britannica.
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HACHETTE, See also:JEAN See also:NICOLAS See also:PIERRE (1769-1834) , See also:French mathematician, was See also:born at See also:Mezieres, where his See also:father was a bookseller, on the 6th of May 1769. For his See also:early See also:education he proceeded first to the See also:college of See also:Charleville, and afterwards to that of See also:Reims. in 1788 he returned to Mezieres, where he was attached to the school of See also:engineering as draughtsman to the professors of physics and See also:chemistry. In 1793 he became See also:professor of See also:hydrography at Collioure and See also:Port-Vendre. While there he sent several papers, in which some questions of See also:navigation were treated geometrically, to Gaspard See also:Monge, at that See also:time See also:minister of marine, through whose See also:influence he obtained an See also:appointment in See also:Paris. Towards the See also:close of 1794, when the Ecole Polytechnique was established, he was appointed along with Monge over the See also:department of descriptive See also:geometry. There he instructed some of the ablest Frenchmen of the See also:day, among them S. D. See also:Poisson, F. See also:Arago and A. See also:Fresnel. Accompanying Guyton de Morveau in his expedition, earlier in the See also:year, he was See also:present at the See also:battle of See also:Fleurus, and entered See also:Brussels with the French See also:army. In 1816, on the See also:accession of See also:Louis XVIII., he was expelled from his See also:chair by See also:government.

He retained, however, till his See also:

death the See also:office of professor in the See also:faculty of sciences in the Ecole Normale, to which he had been appointed in 181o. The necessary royal assent was in 1823 refused to the See also:election of Hachette to the Academie See also:des Sciences, and it was not till 1831, after the Revolution, that he obtained that See also:honour. He died at Paris on the 16th of See also:January 1834. Hachette was held in high esteem for his private See also:worth, as well as for his scientific attainments and See also:great public services. His labours were chiefly in the See also:field of descriptive geometry, with its application to the arts and See also:mechanical engineering. It was See also:left to him to develop the geometry of Monge, and to him also is due in great measure the rapid See also:advancement which See also:France made soon after the See also:establishment of the Ecole Polytechnique in the construction of machinery . Hachette's See also:principal See also:works are his Deux Supplements a la Geometrie descriptive de Monge (1811 and 1818) ; Elements de geometrie a trois dimensions (1817) ; Collection des epures de geometrie, &c. (1795 and 1817) ; Applications de geometrie descriptive (1817) ; Traite de geometrie descriptive, &c. (1822); Traite elementaire des See also:machines (1811); Correspondance sur l'Ecole Polytechnique (1804-1815). He also contributed many valuable papers to the leading scientific See also:journals of his time. For a See also:list of Hachette's writings see the See also:Catalogue of Scientific Papers of the Royal Society of See also:London; also F. Arago, CEuvres (1855); and See also:Silvestre, See also:Notice sur J.

N. P. Hachette (Bruxelles, 1836).

End of Article: HACHETTE, JEAN NICOLAS PIERRE (1769-1834)

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