Permanent historical factsheet

Fat Man

United States · Warfare / World War, 2nd. Chronological records rendered directly from the World History Database.

4Records
1944–1945Date range
4Named people
1Places

Chronological records

1944

Enrico FermiDecember 1944

Warfare / World War, 2nd

Successful test of explosive lens for Fat Man

Robert OppenheimerDecember 1944

Warfare / World War, 2nd

Successful test of explosive lens for Fat Man

1945

Carl Spaatz9 August 1945

Nagasaki · Warfare / World War, 2nd

"Fat Man", an implosion-type plutonium-239 weapon, is used against the city of Nagasaki, Japan

Harry S Truman9 1945

Nagasaki · Warfare / World War, 2nd

"Fat Man", an implosion-type plutonium-239 weapon, is used against the city of Nagasaki, Japan

Names involved

Carl SpaatzEnrico FermiHarry S TrumanRobert Oppenheimer

Provenance

This factsheet is generated from stored World History Database records matching the country, broad category, detailed category and exact Event value shown above. Duplicate display records are collapsed; database wording is otherwise preserved. Source provenance varies by record, so formal academic citation should be checked against the relevant primary source, archive or specialist historical reference.