Langevin, Paul

(1872-1946)
   physicist
   Paul Langevin, who is credited with the first successful development of sonar, as well as the development of a modern theory of magnetism, was born in Paris. He attended the École Lavoisier and École de physique et de chimie industrielles, and also the École normale superiéure, where he studied with the noted physicist jean perrin. Additionally, Langevin studied at Cambridge University under the leading British physicist, J. J. Thompson, and at the sorbonne under pierre curie. He held professorships in physics at the Collège de France (1904) and at the Sorbonne (1909). Langevin's work on ionized gases led him to studies of magnetism and the properties of magnetic fields. in 1911, he proposed a theory to support Pierre Curie's work on paramagnetic gases, and his studies later influenced the Danish physicist Niels Bohr in that scientist's development of the structure of the atom. During World War I (1915), Langevin worked on developing a method for detecting submarines by echolocation (later known as "sonar"), and he also found a method for measuring ultrasonic sound waves. In 1938, he developed a method for slowing fast neutrons. This would later be used by physicists who attempted to develop atomic reactors. During World War II, Langevin was an outspoken critic of Nazi Germany, and was imprisoned in a concentration camp after the German invasion of France (1940). He escaped to Switzerland (1944) and, returning to Paris after the war, assumed the post of director of the Collège de France. Langevin was named to the Academy of Sciences in 1934.

France. A reference guide from Renaissance to the Present . 1884.

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  • Langevin , Paul — (1872–1946) French physicist Langevin, a native Parisian, studied at the Cavendish Laboratory in Cambridge under J.J. Thomson and at the Sorbonne, where he obtained his PhD under Pierre Curie in 1902. He became physics professor at the Collège de …   Scientists

  • Langevin, Paul — ► (1872 1946) Físico francés. Autor de numerosos e importantes trabajos sobre magnetismo, ultrasonido, etc …   Enciclopedia Universal

  • Langevin — Langevin, Paul …   Enciclopedia Universal

  • Paul Langevin — Saltar a navegación, búsqueda Albert Einstein, Paul Ehrenfest, Paul Langevin, Heike Kamerlingh Onnes y Pierre Weiss en casa de Kamerlingh Onnes en Leiden en Países Bajos. Paul Langevin ( …   Wikipedia Español

  • LANGEVIN (P.) — LANGEVIN PAUL (1872 1946) Physicien français né et mort à Paris. «J’ai grandi au lendemain de la guerre de 1870 entre un père républicain jusqu’au fond de l’âme et une mère dévouée jusqu’au sacrifice, au milieu de cet admirable peuple de Paris,… …   Encyclopédie Universelle

  • Paul Langevin — (* 23. Januar 1872 in Paris; † 19. Dezember 1946 in Paris) war ein französischer Physiker. Er studierte an der Ecole Supérieure de Physique et de Chimie Industrielles de la Ville de Paris und setzte dort auch seinen Berufsweg fort, zuletzt als… …   Deutsch Wikipedia

  • Langevin Funktion — Die Langevin Funktion lautet: . Sie ist nach dem Physiker Paul Langevin benannt und wird zur Berechnung von Polarisation, Magnetisierung und Widerstand verwendet. Die bekannteste Anwendung ist die halbklassische Beschreibung eines Paramagneten in …   Deutsch Wikipedia

  • Langevin — (Paul) (1872 1946) physicien français: travaux sur la relativité …   Encyclopédie Universelle

  • Paul Langevin — Pour les articles homonymes, voir Langevin. Paul Langevin Naissance 23 janvier 1872 …   Wikipédia en Français

  • Paul Langevin — Infobox Scientist name = Paul Langevin |224px image width = 224px caption = Paul Langevin (1872 1946) birth date = birth date|1872|1|23|mf=y birth place = Paris, France death date = death date and age|df=yes|1946|12|19|1872|1|23 death place =… …   Wikipedia

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