Humans used nuclear weapons twice in the war, namely1August 6, 945. The United States dropped nuclear weapons on Hiroshima, Japan, and the second time was1August 9, 945, when Fat Man dropped Nagasaki.

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In the late World War II, the United States dropped two atomic bombs on Hiroshima and Nagasaki, Japan. The power of the atomic bomb destroyed these two cities, and 300,000 people died in the atomic bomb explosion, but it also led to the surrender of the Japanese emperor and fascist militarism.

Extended data

Since the possession of nuclear weapons, human war has entered a new era based on nuclear weapons. Nuclear weapons are weapons that release great destructive power through nuclear reactions and are the most powerful weapons ever invented by mankind.

Nuclear weapons are also powerful deterrent weapons, which can give nuclear-armed countries great war potential and prominent international status. China, the United States, Russia, Britain and France are also permanent members of the United Nations Security Council and are recognized as nuclear-weapon powers in the world.

The main destructive power of nuclear bomb comes from shock wave effect. Most buildings will be fatally damaged. The speed of shock wave will exceed the propagation of supersonic wave, and its destructive power will increase with the increase of nuclear weapon equivalent. With the arrival of shock wave, there will be two similar but different phenomena.

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