Brillouin, Leon N.

Brillouin, Leon N. (Nicholas)

(1889–1969) physicist; born in Sevres, France. He taught in France before coming to the U.S.A. in 1941. After doing defense research at Columbia University (1943–45), he moved to Harvard (1946–49). A solid-state physicist who specialized in wave theory, he determined that at high frequencies, sound waves approximate thermal waves. He became director of electronics education at International Business Machines in 1949.
The Cambridge Dictionary of American Biography, by John S. Bowman. Copyright © Cambridge University Press 1995. Reproduced with permission.