Freeman Dyson, English-American physicist and mathematician (died 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. He was professor emeritus in the Institute for Advanced Study at Princeton and a member of the board of sponsors of the Bulletin of the Atomic Scientists.

December 15 is the 349th day of the year in the Gregorian calendar; 16 days remain until the end of the year.