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Richard Phillips Feynman (/ ˈ f aɪ n m ə n /; May 11, 1918 – February 15, 1988) was an American theoretical physicist.He is best known for his work in the path integral formulation of quantum mechanics, the theory of quantum electrodynamics, the physics of the superfluidity of supercooled liquid helium, and in particle physics, for which he proposed the parton model.
These versions are known as type I, type IIA, type IIB, and the two flavors of heterotic string theory (SO(32) and E 8 ×E 8). The thinking was that of these five candidate theories, only one was the actual correct theory of everything, and that theory was the one whose low-energy limit matched the physics observed in our world today. [30]
Biruni is one of the best-known early physicists . Abu sahl Al-Quhi – İran (born 940) Xiaoyi Bao – Canada; Mani Lal Bhaumik – United States (born 1931) Tom Baehr-Jones – United States (born 1980) John Norris Bahcall – United States (1934–2005) Gilbert Ronald Bainbridge – U.K. (1925–2003) Cornelis Bakker – Netherlands (1904 ...
The following is a partial list of notable theoretical physicists. Arranged by century of birth, then century of death, then year of birth, then year of death, then alphabetically by surname. For explanation of symbols, see Notes at end of this article.
Brian Randolph Greene [1] (born February 9, 1963) is an American physicist known for his research on string theory.He is a professor of physics and mathematics at Columbia University, director of its center for theoretical physics, and the chairman of the World Science Festival, which he co-founded in 2008.
His results, which Hawking presented from 1974, showed that black holes emit radiation, known today as Hawking radiation, which may continue until they exhaust their energy and evaporate. [103] [104] [105] Initially, Hawking radiation was controversial. By the late 1970s and following the publication of further research, the discovery was ...
Kaku was born in 1947 in San Jose, California. [2] [3] [4] His parents were both second-generation Japanese-Americans. [5]According to Kaku, his grandfather came to the United States to participate in the cleanup operation after the 1906 San Francisco earthquake, and his father and mother were both born in California. [6]
With this book, Sagan earned the Pulitzer Prize and became famous. In 1980, Sagan hosted the television series Cosmos: A Personal Voyage, which cemented his status as a scientific celebrity. Time Magazine called Sagan "America's most effective salesman of science." Sagan was a university professor at the time that he first achieved celebrity ...