Klaus Fuchs
German-born British theoretical physicist and atomic spy (1911-1988) · United Kingdom · On the map · Scientists · Died at 76
Klaus Emil Julius Fuchs was a German theoretical physicist, atomic spy, and communist who supplied information from the American, British, and Canadian Manhattan Project to the Soviet Union during and shortly after World War II.
Klaus Fuchs is read about 1,197 times a day, in 40 languages.
A typical day, 30 days to 10 November 2026
The middle day of the days counted, so one week of news cannot move it. The line under it is the last 400 days, one point a day.
Something wrong?A life in dates
People around Klaus
Klaus FuchsPartners
Is this everyone?
Only relatives with a profile here are drawn, so a family can be larger than this. A line here can also be wrong. A marriage is drawn as ended only where its end is recorded, so a spouse drawn here may be a former one.
Correct this familyMedia & music
Awards
About this person
While at the Los Alamos Laboratory, Fuchs was responsible for many significant theoretical calculations relating to the first nuclear weapons and, later, early models of the hydrogen bomb. After his conviction in 1950, he served nine years in prison in the United Kingdom, then migrated to East Germany where he resumed his career as a physicist and scientific leader.
