Marcel Brillouin

Louis Marcel Brillouin (; 19 December 1854 – 16 June 1948) was a French physicist and mathematician. He carried research in many realms of physics, including fluid mechanics, thermodynamics, statistical mechanics, geophysics, quantum mechanics and general relativity. Physicist Reinhold Furth referred to Brillioun as the Nestor of Physics, in reference to mythological figure, Nestor.

Life Born in Saint-Martin-lès-Melle, Deux-Sèvres, France, his father was a painter who moved to Paris when Marcel was a boy. He participated at the construction of quantum theory.

Personal life In 1888, he married Charlotte Marguerite Mascart. research on the circulation of the atmosphere, the formation of rain and the theory of the tides. replaced the Nipkow disk in mechanical televisions. He introduced a lensed disk and variable aperture in 1891. measured the curvature of the geoid within the Simplon Tunnel in 1906. showed in 1907, that the specific heat of vacuum, due to black-body radiation is proportional to the (where T is the temperature). participated in the early debates on solutions to Einstein field equations. He studied the case of a massive point particle in curved space-time, he showed that there cannot be an object whose radius is smaller than its Schwarzschild radius.

Awards and honors He was awarded the Prix La Caze for 1912. Brillouin was elected to the Académie des Sciences in 1921. Marcel Brillouin (1906-1907). Leçons sur la Viscosité des Liquides et des Gaz (2 vols., Paris). Paul Langevin, Allocution au Jubilé scientifique de Marcel Brillouin, 1935. Henri Villat (1935). Jubilé de M. Brillouin pour son 80ème anniversaire (2 vols., Paris). Henri Villat (1948). Notice nécrologique sur Marcel Brillouin. Comptes Rendus de l'Académie des Sciences, vol. 226, no. 25, p. 2029. . Léon Brillouin (1981). Brillouin, Marcel Louis. In Dictionary of Scientific Biography ed. by C. C. Gillispie, vol. 2 (Charles Scribner's Sons, New York).