Charles Jacques Alexandre César
Charles(chärlz), Jacques Alexandre César 1746-1823.
French physicist and inventor who formulated Charles's law in 1787. In 1783 he became the first person to use hydrogen in balloons for flight.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.