EMILIO SEGRE VISUAL ARCHIVES / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY EMILIO SEGRE VISUAL ARCHIVES / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY
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Tsung-Dao Lee (born 1926), Chinese-American physicist. Lee moved to America in 1946. In 1956, Lee and Chen Ning Yang showed that parity conservation (mirror-image symmetry) is violated in interactions via the weak nuclear force. This work won them the 1957 Nobel Prize for Physics. Lee and Yang also proposed that electron- and muon-type neutrinos are different, predicted the existence of the weak force carrier, the W boson, and indicated the existence of neutral weak currents.
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