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Darboux, Jean Gaston

(Encyclopedia)Darboux, Jean Gaston zhäN gästôNˈ därbo͞oˈ [key], 1842–1917, French mathematician. He is known for his work on orthogonal surfaces and for his application of infinitesimal calculus to geometr...

Darlan, Jean François

(Encyclopedia)Darlan, Jean François zhäN fräNswäˈ därläNˈ [key], 1881–1942, French admiral. A career naval officer, he became commander of the French navy in 1939 and joined the Vichy government (see unde...

David, Pierre-Jean

(Encyclopedia)David, Pierre-Jean: see David d'Angers. ...

Deburau, Jean Gaspard

(Encyclopedia)Deburau or Debureau, Jean Gaspard both: zhäN gäspärˈ dəbürōˈ [key], 1796–1846, French pantomime performer, whose original name was Jan Kaspar Dvorjak, b. Bohemia. He became famous for his in...

Chalgrin, Jean François

(Encyclopedia)Chalgrin, Jean François zhäN fräNswäˈ shälgrăNˈ [key], 1739–1811, French architect. He studied under Servandoni and in Italy as a winner of the Grand Prix de Rome (1758). He rebuilt (1777) p...

Championnet, Jean Étienne

(Encyclopedia)Championnet, Jean Étienne zhäN ātyĕnˈ shäNpyônĕˈ [key], 1762–1800, French general in the French Revolutionary Wars. Placed in command of the Army of Rome in 1798, he captured (1799) Naples ...

Champollion, Jean François

(Encyclopedia)Champollion, Jean François –fēzhäkˈ [key], 1778–1867, was an archaeologist and paleographer, a professor of Greek at Grenoble, and a curator of manuscripts at the Bibliothèque nationale. He a...

Chaptal, Jean Antoine

(Encyclopedia)Chaptal, Jean Antoine zhäN äNtwänˈ shäptälˈ [key], 1756–1832, French chemist, industrialist, and statesman. He became (1781) professor of chemistry at Montpellier, and during the Revolution h...

Charcot, Jean Martin

(Encyclopedia)Charcot, Jean Martin zhäN märtăNˈ shärkōˈ [key], 1825–93, French neurologist. At the Salpêtrière in Paris he developed the greatest clinic of his time for diseases of the nervous system. He...

Fabre, Jean Henri

(Encyclopedia)Fabre, Jean Henri zhäN äNrēˈ fäˈbrə [key], 1823–1915, French entomologist and author. He is known for his observations on insects and his study of their behavior. Fabre demonstrated the impor...