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Klaus Fuchs

Klaus Fuchs
Klaus Fuchs - police photograph.jpg
Police photograph of Klaus Fuchs ca. 1940
Born Emil Julius Klaus Fuchs
(1911-12-29)29 December 1911
Rüsselsheim, German Empire
Died 28 January 1988(1988-01-28) (aged 76)
East-Berlin, German Democratic Republic
Residence Germany
United Kingdom
United States of America
East Germany
Citizenship Germany, United Kingdom
Nationality German
Fields Theoretical physics
Institutions Los Alamos National Laboratory
Harwell Atomic Energy Research Establishment
Institute for Nuclear Research in Rossendorf
Alma mater University of Leipzig
University of Kiel
University of Bristol
University of Edinburgh
Doctoral advisor Nevill Mott
Spouse Grete Keilson (1959–1988)

Emil Julius Klaus Fuchs (29 December 1911 – 28 January 1988) was a German theoretical physicist and atomic spy who, in 1950, was convicted of supplying information from the American, British, and Canadian Manhattan Project to the Soviet Union during and shortly after the Second World War. While at the Los Alamos National Laboratory, Fuchs was responsible for many significant theoretical calculations relating to the first nuclear weapons, and later, early models of the hydrogen bomb.

The son of a Lutheran pastor, Fuchs attended the University of Leipzig, where his father was a professor of theology, and became involved in student politics, joining the student branch of the Social Democratic Party of Germany (SPD), and the Reichsbanner Schwarz-Rot-Gold, the SPD's paramilitary organisation. He was expelled from the SPD in 1932, and joined the Communist Party of Germany (KPD). He went into hiding after the 1933 Reichstag fire, and fled to the United Kingdom, where he received his PhD from the University of Bristol under the supervision of Nevill Mott, and his DSc from the University of Edinburgh, where he worked as an assistant to Max Born.


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