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Guillaume Amontons

Born: 31-Aug-1663
Birthplace: Paris, France
Died: 11-Oct-1705
Location of death: Paris, France
Cause of death: unspecified

Gender: Male
Race or Ethnicity: White
Occupation: Physicist

Nationality: France
Executive summary: Thermometrist

French physicist, the son of an advocate who had left his native province of Normandy and established himself at Paris, was born in that city on the 31st of August 1663. He devoted himself particularly to the improvement of instruments employed in physical experiments. In 1687 he presented to the Academy of Sciences a hygrometer of his own invention, and in 1695 he published his only book, Remarques et expériences physiques sur la construction d'une nouvelle clepsydre, sur les baromètres, les thermomètres et les hygromètres. In 1699 he published some investigations on friction, and in 1702-03 two noteworthy papers on thermometry. He experimented with an air-thermometer, in which the temperature was defined by measurement of the length of a column of mercury; and he pointed out that the extreme cold of such a thermometer would be that which reduced the "spring" of the air to nothing, thus being the first to recognize that the use of air as a thermometric substance led to the inference of the existence of a zero of temperature. In 1704 he noted that barometers are affected by heat as well as by the weight of the atmosphere, and in the following year he described barometers without mercury, for use at sea. Amontons, who through disease was rendered almost completely deaf in early youth, died at Paris on the 11th of October 1705.

    Lunar Crater Amontons (5.3S, 46.8E, 3km dia)



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