Charles, Jacques Alexandre César (1746-1823) French physicist who studied gases and made the first ascent in a hydrogen-filled balloon in 1783.
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.
Charles, Jacques Alexandre César (zhäk älĕksäN`drə sāzär` shärl), 1746–1823, French physicist. He confirmed Benjamin Franklin's electrical experiments, became interested ...