'''Frank Oppenheimer''' was the [[Communism|communist]] brother of [[J. Robert Oppenheimer]]. Like his brother, Frank was a physicist.
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'''Frank Oppenheimer'''(August 14, 1912 – February 3, 1985) was the brother of [[J. Robert Oppenheimer]], and was a renown physicist who was the scientific director of the Manhattan project. He came under fire from McCarthy era paranoia, being labeled a [[communist]]. While he admitted to going to several meetings, he denied being a communist and defended his position as an American scientist and scholar.
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Despite his claims, the label "communist" which followed him for the next 15 years prevented him from further study in physics, and he became a high school teacher in Colorado. Once the McCarthy furor died down, he moved to London, where he studied the History of Physics.