Freeman John Dyson FRS (December 15, 1923 – February 28, 2020) was an English-born-American theoretical physicist and mathematician. He was known for his work in quantum electrodynamics, solid-state physics, astronomy and nuclear engineering. He gained a bachelor degree at the University of Cambridge. In 1957, he became an American citizen.
Dyson was born in Crowthorne, Berkshire, England, the son of George Dyson. Dyson died on February 28, 2020 at a hospital in Princeton, New Jersey from a fall, aged 96.
He won many scientific awards, including the Wolf Prize in Physics in 1981.