Information AboutJacques Charles |
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Jacques Alexandre César Charles ( November 11 , 1746 - April 7 , 1823 ) was a French inventor, scientist, mathematician, and balloonist. Charles was born in Beaugency-sur-Loire, and made the first flight in a hydrogen balloon on August 27, 1783; on December 1, 1783, with Ainé Roberts, he ascended to a height of about 1,800 feet (550 meters). He invented several useful devices, including a Hydrometer and reflecting Goniometer , and improved the Gravesand Heliostat and Fahrenheit's Aerometer . In addition he confirmed Benjamin Franklin 's electrical experiments. Circa 1787 he discovered Charles' Law , which states that under constant pressure, a gas' volume is proportional to its temperature. The formula he created was V1/T1=V2/T2. His discovery anticipated Joseph Louis Gay-Lussac 's published law of the expansion of gases with heat (1802). Charles was elected to the Institut Royal De France , Académie Des Sciences , in 1793, and subsequently became professor of physics at the Conservatoire Des Arts Et Métiers . He died in Paris on April 7, 1823. |
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