An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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Charles' law
  قانون ِ شارل  
qânun-e Charles (#)
Fr.: loi de Charles  

The volume of a fixed mass of any gas increases for each degree rise in temperature by a constant fraction of the volume at 0° C, the pressure being constant throughout.

Etymology (EN): Named after Jacques Charles (1746-1823), French physicist, who first discovered the law, and who was responsible for the first balloon ascents using hydrogen.