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  1. 21 juin 2024 · The first atomic bomb, named Little Boy, was dropped on Hiroshima from the Enola Gay, a B-29 bomber, at 8:15 AM on August 6, 1945. The second bomb, named Fat Man, was dropped on Nagasaki from the Bockscar, also a B-29 bomber, at 11:02 AM on August 9, 1945.

  2. 21 juin 2024 · On August 9, 1945, three days after detonating a uranium-fueled atomic bomb over Hiroshima, Japan, the United States dropped a plutonium-fueled atomic bomb over the Japanese port of Nagasaki. (more)

    • The Editors of Encyclopaedia Britannica
    • Hiroshima: Why the Bomb Was Dropped1
    • Hiroshima: Why the Bomb Was Dropped2
    • Hiroshima: Why the Bomb Was Dropped3
    • Hiroshima: Why the Bomb Was Dropped4
    • Hiroshima: Why the Bomb Was Dropped5
  3. Il y a 17 heures · On August 6, 1945, an atomic bomb carried from Tinian Island in the Marianas in a specially equipped B-29 was dropped on Hiroshima, at the southern end of Honshu: the combined heat and blast pulverized everything in the explosion’s immediate vicinity, generated fires that burned almost 4.4 square miles completely out, and ...

  4. Il y a 3 jours · The bomb was driven to the base of the tower, where a temporary eye bolt was screwed into the 105-pound (48 kg) capsule and a chain hoist was used to lower the capsule into the bomb. As the capsule entered the hole in the uranium tamper, it stuck.

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  5. 11 juin 2024 · There are three main possible causes of the clouds that produced the “black rain.”. One were the clouds created by the fireball. After the atomic bomb exploded about 600 meters aboveground, a high-temperature fireball expanded and rose in the sky, gradually cooling and forming a mushroom cloud.

  6. 20 juin 2024 · The atomic bombs dropped in 1945 contained uranium-235 and plutonium-239 and expanded great heat and power short-wave gamma rays. Energy oscillates in the form of photon wave of different...

  7. Il y a 3 jours · In August 1945 American military air forces dropped atomic bombs on the cities of Hiroshima (6 August) and of Nagasaki (9 August). These bombings were not caused by military necessity, and served primarily political aims. They inflicted enormous damage on the peaceable population.