Lee, Tsung-Dao

▪ Chinese-American physicist
born Nov. 24, 1926, Shanghai, China
 
 Chinese-born American physicist who, with Chen Ning Yang (Yang, Chen Ning), received the Nobel Prize for Physics in 1957 for work in discovering violations of the principle of parity conservation (parity) (the quality of space reflection symmetry of subatomic particle interactions (subatomic particle)), thus bringing about major refinements in particle physics theory.

      In 1946 Lee was awarded a scholarship to study in the United States, and, although he had no undergraduate degree, he entered the graduate school in physics at the University of Chicago, where Enrico Fermi (Fermi, Enrico) selected him as a doctoral student. After working briefly at the University of Chicago's Yerkes Astronomical Observatory (Yerkes Observatory) in Wisconsin, the University of California at Berkeley, and for two years with Yang at the Institute for Advanced Study, Princeton, N.J., Lee was appointed assistant professor of physics at Columbia University in 1953.

      In 1956 Lee and Yang concluded that the theta-meson and tau-meson, previously thought to be different because they decay by modes of differing parity, are in fact the same particle (now called the K-meson). Because the law of parity conservation prohibits a single particle from having decay modes exhibiting opposite parity, the only possible conclusion was that, for weak interactions at least, parity is not conserved. They suggested experiments to test their hypothesis, and in 1956–57 Chien-Shiung Wu (Wu, Chien-Shiung), working at Columbia University, experimentally confirmed their theoretical conclusions. (See also CP violation.)

      In 1960 Lee was appointed professor of physics at the Institute for Advanced Study, and three years later he returned to Columbia to assume the first Enrico Fermi professorship in physics. From 1964 he made important contributions to the explanation of the violations of time-reversal invariance, which occur during certain weak interactions.

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Universalium. 2010.

Look at other dictionaries:

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  • Ли, Ли Цзундао (Lee Tsung-Dao) — (р. 1926), китайский физик теоретик. Выдвинул (1956, совместно с Янгом) гипотезу о несохранении чётности в слабых взаимодействиях (экспериментально обнаружена в 1958). Нобелевская премия (1957, совместно с Янгом) …   Большой Энциклопедический словарь

  • Tsung-dao lee — Tsung Dao Lee (李政道, né le 24 novembre 1926) est un physicien américain, d origine chinoise, qui a travaillé sur la physique nucléaire, en étudiant notamment les particules à haute énergie, et à la physique statistique. En 1957, à 31 ans, il… …   Wikipédia en Français

  • Tsung Dao Lee — Tsung Dao Lee (李政道, né le 24 novembre 1926) est un physicien américain, d origine chinoise, qui a travaillé sur la physique nucléaire, en étudiant notamment les particules à haute énergie, et à la physique statistique. En 1957, à 31 ans, il… …   Wikipédia en Français

  • Tsung-Dao Lee — Tsung Dao Lee …   Wikipedia Español

  • Tsung-Dao Lee — (李政道), né le 24 novembre 1926 à Shanghai, est un physicien américano chinois, qui a travaillé sur la physique nucléaire, en étudiant notamment les particules à haute énergie, et à la physique statistique. Chen Ning Yang et lui sont colauréats du …   Wikipédia en Français

  • Tsung-Dao Lee — Infobox Scientist box width = 300px name = Tsung Dao Lee |thumb|right|200px|Tsung Dao Lee caption = T.D. Lee birth date = Birth date and age|1926|11|24 birth place = Shanghai, China citizenship = United States field = Physics work institution =… …   Wikipedia

  • Tsung-Dao Lee — 1957 T.D. Lee auf der Quark Matter Konferenz 2006 in Shanghai Tsung Dao Lee ( …   Deutsch Wikipedia

  • Tsung-Dao Lee — (24 de noviembre de 1926) es un físico chino cuyas teorías guiaron la investigación de la física nuclear durante la segunda mitad del siglo XX. Encontró incoherencias en el principio de paridad e inició el desarrollo de una teoría unificadora de… …   Enciclopedia Universal

  • Tsung Dao Lee — noun United States physicist (born in China) who collaborated with Yang Chen Ning in disproving the principle of conservation of parity (born in 1926) • Syn: ↑Lee • Instance Hypernyms: ↑nuclear physicist …   Useful english dictionary

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