Léon Brillouin

Léon Brillouin
Léon Brillouin
	Léon Nicolas Brillouin (1889–1969)
Born	August 7, 1889; Sèvres, Seine-et-Oise, France
Died	October 4, 1969 (aged 80); New York City, US
Citizenship	French (pre-1949); American (post-1949)
Alma mater	École Normale Supérieure; Sorbonne; Collège de France
Known for	Brillouin function; Brillouin limit; Brillouin paradox; Brillouin scattering; Brillouin zone; Brillouin theorem; Brillouin doublet; Brillouin flow; Brillouin–Wigner formula; Einstein–Brillouin–Keller method; WKB approximation; Acoustoelastic effect; Negentropy
Spouse(s)	Stéphanie "Stéfa" Prussak (m. 1912 d. 1966), Marcelle van Praag (m. 1967)
Father	Marcel Brillouin
Awards	National Academy of Sciences Membership (1953); Peccot Lectures (1919-1920); ICM Speaker (1920)
	Scientific career
Fields	Physics
Institutions	Sorbonne; Collège de France; École Supérieure d'Électricité; University of Wisconsin–Madison; Brown University; Harvard; IBM; Columbia University
Thesis	La théorie des solides et les quanta (1921)
Doctoral advisor	Paul Langevin
Doctoral students	Nicolas Cabrera, Ivar Stakgold
Notes
	He was the son of the physicist Marcel Brillouin.

Léon Nicolas Brillouin (French: [leɔ̃ nikɔla bʁijwɛ̃]; August 7, 1889 – October 4, 1969) was a French physicist. He made contributions to quantum mechanics, radio wave propagation in the atmosphere, solid-state physics, and information theory.