Pierre Louis Dulong
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High Quality Content by WIKIPEDIA articles! Pierre Louis Dulong (12 February 1785 19 July 1838) was a French physicist and chemist, remembered today largely for the law of Dulong and Petit. Dulong was born in Rouen, France. He worked on the specific heat capacity and the expansion and refractive indices of gases. He gained his secondary education in Auxerre and Rouen before entering the École Polytechnique, Paris in 1801. He began studying medicine, but gave this up to concentrate on science, working under the direction of Thénard. Dulong succeeded Alexis Thérèse Petit as professor of physics,…mehr

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High Quality Content by WIKIPEDIA articles! Pierre Louis Dulong (12 February 1785 19 July 1838) was a French physicist and chemist, remembered today largely for the law of Dulong and Petit. Dulong was born in Rouen, France. He worked on the specific heat capacity and the expansion and refractive indices of gases. He gained his secondary education in Auxerre and Rouen before entering the École Polytechnique, Paris in 1801. He began studying medicine, but gave this up to concentrate on science, working under the direction of Thénard. Dulong succeeded Alexis Thérèse Petit as professor of physics, from 1820 to 1829, then was directeur des études until his death. In 1819 Dulong collaborated with Petit to show that the mass heat capacity of metallic elements are inversely proportional to their atomic masses, this being now known as the Dulong-Petit law. Dulong also worked on the elasticity of steam, on the measurement of temperatures, and on the behavior of elastic fluids. He made the first precise comparison of the mercury- and air-temperature scales. At the time of his death, he was working on the development of precise methods in calorimetry.