births
Freeman Dyson, English-American physicist and mathematician (died 2020)
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Freeman Dyson
British theoretical physicist and mathematician (1923–2020)
Freeman John Dyson was a British-American theoretical physicist and mathematician, and futurist known for his works in quantum field theory, astrophysics, random matrices, mathematical formulation of quantum mechanics, condensed matter physics, nuclear physics, and engineering.…Source: Wikipedia (CC BY-SA)
December 15
Day of the year
December 15 is the 349th day of the year in the Gregorian calendar; 16 days remain until the end of the year.Source: Wikipedia (CC BY-SA)