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Nobel Prizes and Laureates

Nobel Prizes and Laureates

The Nobel Prize in Physics 1957
Chen Ning Yang, Tsung-Dao Lee

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Tsung-Dao Lee - Facts

Tsung-Dao (T.D.) Lee

Tsung-Dao (T.D.) Lee

Born: 24 November 1926, Shanghai, China

Affiliation at the time of the award: Columbia University, New York, NY, USA

Prize motivation: "for their penetrating investigation of the so-called parity laws which has led to important discoveries regarding the elementary particles"

Field: particle physics

Prize share: 1/2

Broke a Puzzling Deadlock in the Field of Elementary Particle Physics

For a long time, physicists assumed that various symmetries characterized nature. In a kind of "mirror world" where right and left were reversed and matter was replaced by antimatter, the same physical laws would apply, they posited. The equality of these laws was questioned concerning the decay of certain elementary particles, however, in 1956 and Tsung Dao Lee and Chen Ning Yang formulated a theory that the left-right symmetry law is violated by the weak interaction. Measurements of electrons' direction of motion during a cobalt isotope's beta decay confirmed this.

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MLA style: "Tsung-Dao Lee - Facts". Nobelprize.org. Nobel Media AB 2014. Web. 30 Apr 2016. <http://www.nobelprize.org/nobel_prizes/physics/laureates/1957/lee-facts.html>

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