'Jacques Alexandre Cesar Charles (1746-1823) French scientist, mathematician and balloonist. Pioneered use of Hydrogen in ballooning. Professor of physcis at the Conservatoire des Arts et Metiers.'.
'Jacques Alexandre Cesar Charles (1746-1823) French scientist, mathematician and balloonist. Pioneered use of Hydrogen in ballooning. Professor of physcis at the Conservatoire des Arts et Metiers.'