Little Boy
E50421
Little Boy was the codename for the uranium-based atomic bomb dropped on Hiroshima, Japan, by the United States on August 6, 1945, marking the first use of nuclear weapons in warfare.
Aliases (1)
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
atomic bomb
→
nuclear weapon → uranium-based fission bomb → |
| approximateYield |
13–18 kilotons of TNT
→
15 kilotons of TNT → |
| casualtiesContext |
caused massive civilian casualties in Hiroshima
→
|
| category |
Nuclear bombs of the United States
→
World War II weapons of the United States → |
| cityTargeted |
Hiroshima
→
|
| codenameOf |
uranium-based atomic bomb dropped on Hiroshima
→
|
| continentTargeted |
Asia
→
|
| countryOfOrigin |
United States
→
|
| crewCommanderOfDeliveryAircraft |
Paul W. Tibbets Jr.
→
|
| dateOfUse |
1945-08-06
→
|
| deliveredBy |
509th Composite Group
→
|
| deliveryAircraft |
Enola Gay
→
|
| deliveryMethod |
air-dropped bomb
→
|
| designType |
gun-type fission weapon
→
|
| developedBy |
Los Alamos Laboratory
→
Manhattan Project → |
| developmentCountry |
United States
→
|
| developmentPeriod |
World War II
→
|
| diameter |
approximately 71 centimeters
→
|
| droppedOn |
Hiroshima
→
|
| era |
early Cold War precursor
→
|
| explosionHeight |
approximately 600 meters above Hiroshima
→
|
| firstUseContext |
first atomic bomb used in combat
→
first nuclear weapon used in warfare → |
| fissileMaterial |
uranium-235
→
|
| followedBy |
Fat Man
→
|
| historicalSignificance |
contributed to Japan's decision to surrender
→
demonstrated destructive power of nuclear weapons → triggered global nuclear arms race → |
| length |
approximately 3 meters
→
|
| nicknameLanguage |
English
→
|
| operator |
United States Army Air Forces
→
|
| opposedBy |
some Manhattan Project scientists
→
|
| purpose |
to demonstrate U.S. nuclear capability
→
to force Japanese surrender → |
| relatedEvent |
atomic bombings of Hiroshima and Nagasaki
→
|
| relatedOperation |
Manhattan Project nuclear tests and development
→
|
| targetCountry |
Japan
→
|
| usedBy |
United States Army Air Forces
→
|
| usedInConflict |
World War II
→
|
| usedInTheater |
Pacific War
→
|
| usedOnDate |
1945-08-06
→
|
| warheadType |
fission
→
|
| weaponType |
strategic bomb
→
|
| weight |
approximately 4,400 kg
→
|
Referenced by (13)
| Subject (surface form when different) | Predicate |
|---|---|
|
44-86292
→
Enola Gay → |
bombTypeCarried |
|
K-25 Project
→
|
associatedWith |
|
V-Site buildings
("Little Boy atomic bomb")
→
|
associatedWithWeapon |
|
Hiroshima
→
|
bombNickname |
|
509th Composite Group
→
|
bombTypeUsed |
|
B-29 Superfortress
("Little Boy atomic bomb")
→
|
carried |
|
Secret City
("Little Boy atomic bomb")
→
|
contributedTo |
|
Project Y
→
|
notableProject |
|
Project Alberta
("Little Boy atomic bomb")
→
|
notableWork |
|
Fat Man
→
|
otherCombatNuclearWeapon |
|
Site X
("Little Boy atomic bomb")
→
|
producedFor |
|
atomic bombings of Hiroshima and Nagasaki
→
|
weaponUsedAtHiroshima |