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Gustave-Adolphe Hirn : ウィキペディア英語版 | Gustave-Adolphe Hirn
Gustave-Adolphe Hirn (August 21, 1815 - January 14, 1890) was a French physicist, astronomer. mathematician and engineer who made important measurements of the mechanical equivalent of heat and contributions to the early development of thermodynamics. He further applied his science in the practical development of steam engines. ==Life== Hirn was born in Logelbach, near Colmar into the prosperous textile-manufacturing family Haussmann. Baron Haussmann was a cousin. At 19, he entered his grandfather's cotton factory as a chemist. Later he worked as an engineer, and began research on mechanics, especially on calorics. He was made a member of the French Academy of Science in 1867; in 1880 founded a meteorological observatory near Colmar; and later devoted himself to astronomy. Hirn was educated in the shop, and his works are marked by much practical criticism of mere academic theory. Hirn invented the pandynanometer in 1880 and published a theory of the origin and chemical composition of Saturn's rings, exchanging correspondence with Urbain Jean Joseph Leverrier. He died in Logelbach.
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