Robert OppenheimerDecember 1944
Successful test of explosive lens for Fat Man
United States of America · Warfare / World War, 2nd. Chronological records rendered directly from the World History Database.
Successful test of explosive lens for Fat Man
"Fat Man", an implosion-type plutonium-239 weapon, is used against the city of Nagasaki, Japan
"Fat Man", an implosion-type plutonium-239 weapon, is used against the city of Nagasaki, Japan
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by record, so formal academic citation should be checked against the relevant primary source, archive or specialist historical reference.