Quo Fuit places 6 dated presences for Klaus Fuchs across 6 places, from 1911 to 1988.
Each one keeps the sentence it was taken from and a link to its source.
Klaus Emil Julius Fuchs (29 December 1911 – 28 January 1988) 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.Wikipedia, full article · CC BY-SA
Every dot is a place Klaus Fuchs is documented in, on a dated record. The interactive globe carries the full detail.
Where Klaus Fuchs was documented, and when
29 December 1911exact date
Rüsselsheimattested“Klaus Emil Julius Fuchs was born in Rüsselsheim, Grand Duchy of Hesse, on 29 December 1911, the third of four children of a Lutheran pastor, Emil Fuchs, and his wife Else Wagner.”source: Wikipedia: Klaus Fuchs
1930year
University of Leipzigattested“Fuchs entered the University of Leipzig in 1930, where his father was a professor of theology.”source: Wikipedia: Klaus Fuchs
May 1944month
Columbia Universityattested“In late 1943, Fuchs (codename: "Rest"; he became "Charles" in May 1944), transferred along with Peierls to Columbia University, in New York City, to work on gaseous diffusion as a means of uranium enrichment for the Manhattan Project.”source: Wikipedia: Klaus Fuchs
May 1944month
New York Cityattested“In late 1943, Fuchs (codename: "Rest"; he became "Charles" in May 1944), transferred along with Peierls to Columbia University, in New York City, to work on gaseous diffusion as a means of uranium enrichment for the Manhattan Project.”source: Wikipedia: Klaus Fuchs
1947year
United Statesattested“All of the information on the hydrogen bomb work was delivered after Fuchs had left the United States, in 1947, and only after being directly prompted for it by his contact.”source: Wikipedia: Klaus Fuchs
28 January 1988exact date
East Berlinattested“Fuchs died in East Berlin on 28 January 1988.”source: Wikipedia: Klaus Fuchs
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In each of these, a source puts Klaus Fuchs and the place in the same dated sentence without stating
that Klaus Fuchs was there. They are kept apart from the timeline above for exactly that reason:
a mention is not a presence, and Quo Fuit does not quietly promote one into the other.
1933year
Germanymentioned“In Germany, Emil had been dismissed from his academic post, and, disillusioned with the Lutheran Church's support of the NSDAP, had become a Quaker in 1933.”source: Wikipedia: Klaus Fuchs
1933year
University of Zurichmentioned“After Emil was arrested in 1933, his other daughter, Kristel, fled to Zurich, where she studied education and psychology at the University of Zurich.”source: Wikipedia: Klaus Fuchs
1933year
Zurichmentioned“After Emil was arrested in 1933, his other daughter, Kristel, fled to Zurich, where she studied education and psychology at the University of Zurich.”source: Wikipedia: Klaus Fuchs
August 1933month
Clapton, Somersetmentioned“In August 1933, he attended an anti-fascist conference in Paris chaired by Henri Barbusse, where he met an English couple, Ronald and Jessie Gunn, who invited him to stay with them in Clapton, Somerset.”source: Wikipedia: Klaus Fuchs
August 1933month
Parismentioned“In August 1933, he attended an anti-fascist conference in Paris chaired by Henri Barbusse, where he met an English couple, Ronald and Jessie Gunn, who invited him to stay with them in Clapton, Somerset.”source: Wikipedia: Klaus Fuchs
24 September 1933exact date
Englandmentioned“Fuchs arrived in England on 24 September 1933.”source: Wikipedia: Klaus Fuchs
1934year
Berlinmentioned“She returned to Berlin in 1934, where she too worked at the car rental agency.”source: Wikipedia: Klaus Fuchs
1936year
United Statesmentioned“In 1936, Emil arranged with Quaker friends in the United States for Kristel to attend Swarthmore College there.”source: Wikipedia: Klaus Fuchs
May 1938month
United Statesmentioned“She became a permanent resident in the United States in May 1938.”source: Wikipedia: Klaus Fuchs
1942year
Berkeley, Californiamentioned“Fuchs told interrogators that the NKGB had acquired an agent in Berkeley, California, who had informed the Soviet Union about electromagnetic separation research of uranium-235 in 1942 or earlier.”source: Wikipedia: Klaus Fuchs
1943year
Cambridgementioned“He spent Christmas 1943 with Kristel and her family in Cambridge.”source: Wikipedia: Klaus Fuchs
August 1944month
Los Alamos Laboratorymentioned“From August 1944, Fuchs worked in the Theoretical Physics Division at the Los Alamos Laboratory, under Hans Bethe.”source: Wikipedia: Klaus Fuchs
1945 to 1947period
Soviet Unionmentioned“Fuchs later stated that he passed detailed information on the project to the Soviet Union through courier Harry Gold in 1945, and further information about Edward Teller's unworkable "Super" design for a hydrogen bomb in 1946 and 1947.”source: Wikipedia: Klaus Fuchs
1946 to 1952period
Soviet Unionmentioned“Most scholars agree with Hans Bethe's 1952 assessment, which concluded that by the time Fuchs left the thermonuclear programme in mid-1946, too little was known about the mechanism of the hydrogen bomb for his information to be useful to…”source: Wikipedia: Klaus Fuchs
Two people documented in the same place in the same year is a correlation, not a meeting.
Quo Fuit will never say they met without a source that says so.
How to read this page
Every line above is a dated fact taken from a source, with the sentence it came from and a link
back to it. Nothing is inferred, and a gap in the record is not evidence that someone was elsewhere.
A tag says how the fact is carried by its source: documented a structured,
explicitly dated record, attested a sentence that states the person was there,
mentioned a sentence that ties the person to the place without stating presence.
Sentences quoted from Wikipedia are available under CC BY-SA 4.0. Public domain books come from
Project Gutenberg. Quo Fuit claims no rights over these sources.
See Klaus Fuchs on a 3D globe, filter the record by date, and cross this life with another to find
where the two overlap.
