Tsung-Dao Lee

Tsung-Dao Lee was a Chinese-American theoretical physicist who shared the 1957 Nobel Prize in Physics for showing, with Chen-Ning Yang, that parity is not conserved in weak interactions.

Chen-Ning Yang: A Chinese-American theoretical physicist who shared the 1957 Nobel Prize with Tsung-Dao Lee for work on parity nonconservation. Yang and Lee jointly proposed that weak interactions might violate parity.
Parity (physics): A spatial symmetry operation that replaces a physical system’s coordinates with their mirror-inverted counterparts. Lee and Yang questioned whether weak interactions obey this mirror symmetry.
University of Chicago: A private research university in Chicago, Illinois, founded in 1890. Lee earned his doctorate there in 1950 under Enrico Fermi.
1957 Nobel Prize in Physics: The Nobel Prize awarded to Tsung-Dao Lee and Chen-Ning Yang for work on parity nonconservation. The award recognized their proposal that weak interactions violate parity.
Chien-Shiung Wu: A Chinese-American experimental physicist whose beta-decay experiment demonstrated parity violation in weak interactions. Her experiment tested the proposal Lee developed with Yang.
Weak interaction: A fundamental interaction responsible for processes such as beta decay and neutrino interactions. Parity violation occurs in weak processes, unlike the established behavior of other interactions.
Institute for Advanced Study: An independent research center in Princeton, New Jersey, founded in 1930. Lee joined its School of Mathematics in 1946 and developed his early career there.
CP violation: A difference between the behavior of matter and antimatter under combined charge conjugation and parity transformations. Parity violation prompted physicists to test whether the combined CP symmetry remained intact.
Robert Oppenheimer: An American theoretical physicist who led the Institute for Advanced Study in Princeton from 1947 to 1966. Oppenheimer recruited Lee to the Institute for Advanced Study in 1946.
Beta decay: A radioactive decay in which a nucleus emits an electron or positron and a neutrino or antineutrino. The Wu experiment tested parity by measuring electrons emitted in beta decay.

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