Manhattan Project…history in 2 parts…part 1 „LITTLE BOY”..(pentru ca trebuie sa fie in engleza)


Type Nuclear weapon
Place of origin United States
Weight 8,818.49 lbs.
4,000 kg
Length 9.84 ft.
3.0 m
Diameter 2.3 ft.
0.7 m

Blast yield 13 to 18 kiloto

Little Boy was the codename of the atomic bomb that was dropped on Hiroshima, on August 6, 1945 by the B-29 Super fortress Enola Gay, piloted by Colonel Paul Tibbets in the 393d Bombardment Squadron, Heavy of the United States Army Air Forces. It was the first atomic bomb ever used as a weapon, and was dropped three days before the „Fat Man” bomb was used against Nagasaki.

The weapon was developed by the Manhattan Project during World War II. It derived its explosive power from the nuclear fission of uranium 235. The Hiroshima bombing was the second artificial nuclear explosion in history (the first was the „Trinity” test), and it was the first uranium-based detonation. Approximately 600 milligrams of mass were converted into energy. It exploded with a destructive power equivalent to between 13 and 18 kilotons of TNT (estimates vary) and killed approximately 140,000 people. Its design was never tested at the Trinity test site (unlike Fat Man), due to the fact that enriched uranium was very rare at the time, and the United States

The nuclear weapon „Little Boy” was dropped on the city of Hiroshima on Monday August 6, 1945/08:15 (Hiroshima time).

The bombs killed as many as 140,000 people in Hiroshima.


The mushroom cloud over Hiroshima after the dropping of Little Boy

Before 6 August 1945


Before 6 August 1945 and the next days





Hiroshima present day



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