Other Free Encyclopedias » Online Encyclopedia » Encyclopedia - Featured Articles » Contributed Topics from U-Z

Yang, Chen Ning

physics study parity nuclear

(1922– ) Chinese–US physicist: showed that parity is not conserved by the weak nuclear force.

Yang, the son of a professor of mathematics, received his college education in Kunming in China. Taking up a fellowship for travel and research in America he completed a PhD under at Chicago. He joined the Institute for Advanced Study at Princeton in 1949. He became director of the Institute for Theoretical Physics at the State University of New York, Stony Brook in 1966.

It is Yang’s work in collaboration with which is justly celebrated as a turning point in the development of theoretical physics: they showed that the law of conservation of parity (ie that physical laws are unaltered in mirror-image systems) does not hold for the weak nuclear interactions (1956). The prediction was confirmed by thorough experimental study and quickly led to the award of a Nobel Prize for physics to Yang and Lee (1957).

Yang is also noted for his development of a non-Abelian gauge theory with R L Mills (1924– ), the Yang–Mills theory. This proved to be an important new departure in theories of elementary particles and quantum fields.

[back] Yamamoto, Yohji

User Comments

Your email address will be altered so spam harvesting bots can't read it easily.
Hide my email completely instead?

Cancel or