<P> `` Little Boy '' was the codename for the atomic bomb dropped on the Japanese city of Hiroshima on 6 August 1945 during World War II by the Boeing B - 29 Superfortress Enola Gay , piloted by Colonel Paul W. Tibbets , Jr. , commander of the 509th Composite Group of the United States Army Air Forces . It was the first atomic bomb to be used in warfare . The Hiroshima bombing was the second artificial nuclear explosion in history , after the Trinity test , and the first uranium - based detonation . It exploded with an energy of approximately 15 kilotons of TNT ( 63 TJ ) . The bomb caused significant destruction to the city of Hiroshima and its occupants . </P>
<P> `` Little Boy '' was the codename for the atomic bomb dropped on the Japanese city of Hiroshima on 6 August 1945 during World War II by the Boeing B - 29 Superfortress Enola Gay , piloted by Colonel Paul W. Tibbets , Jr. , commander of the 509th Composite Group of the United States Army Air Forces . It was the first atomic bomb to be used in warfare . The Hiroshima bombing was the second artificial nuclear explosion in history , after the Trinity test , and the first uranium - based detonation . It exploded with an energy of approximately 15 kilotons of TNT ( 63 TJ ) . The bomb caused significant destruction to the city of Hiroshima and its occupants . </P>
what was the name of atomic bomb dropped on hiroshima
what was the name of atomic bomb dropped on hiroshima
Little Boy
Little Boy