Frank Oppenheimer

Frank Oppenheimer
Born	Frank Friedman Oppenheimer (1912-08-14)August 14, 1912 New York City, U.S.
Died	February 3, 1985(1985-02-03) (aged 72) Sausalito, California, U.S.
Education	Johns Hopkins University (BS) California Institute of Technology (MS, PhD)
Known for	Target of McCarthyism Uranium enrichment Founder and director (1969–1985) of the Exploratorium Brother of J. Robert Oppenheimer
Spouses	Jacquenette Quann ​ ​ (m. 1936; died 1980)​ [1][2] Mildred Danielson ​ (m. 1982)​ [3][4]
Children	3
Relatives	J. Robert Oppenheimer (brother)
Awards	Guggenheim Fellowship (1965) Oersted Medal (1984)
Scientific career
Fields	Particle physicist Science educator
Institutions	Arcetri Observatory Manhattan Project Lawrence Berkeley National Laboratory University of Minnesota University of Colorado
Thesis	Beta Ray Spectra (1939)

Frank Friedman Oppenheimer (14 August 1912 – 3 February 1985) was an American particle physicist, cattle rancher, professor of physics at the University of Colorado, and the founder of the Exploratorium in San Francisco.

The younger brother of renowned physicist J. Robert Oppenheimer, Frank Oppenheimer conducted research on aspects of nuclear physics during the time of the Manhattan Project, and made contributions to uranium enrichment. After the war, Oppenheimer's earlier involvement with the American Communist Party placed him under scrutiny, and he resigned from his physics position at the University of Minnesota. Oppenheimer was a target of McCarthyism and was blacklisted from finding any physics teaching position in the United States until 1957, when he was allowed to teach science at a high school in Colorado. This rehabilitation allowed him to gain a position at the University of Colorado teaching physics. In 1969, Oppenheimer founded the Exploratorium in San Francisco, and he served as its first director until his death in 1985.