Atomic bombings of Hiroshima and Nagasaki - Wikipedia
On 6 and 9 August 1945, the United States detonated two atomic bombs over the Japanese cities of Hiroshima and Nagasaki, respectively. The bombings killed between 150,000 and 246,000 people, most of whom were civilians, and remain the only use of …
Little Boy - Wikipedia
It exploded with an energy of approximately 15 kilotons of TNT (63 TJ) and had an explosion radius of approximately 1.3 kilometers which caused widespread death across the city. The Hiroshima bombing was the second nuclear explosion in history, after the Trinity nuclear test.
(48)Why was the atomic bomb detonated at a height of 600 meters?
2009年3月23日 · First, for the initial 15 seconds after it was released, the bomb was prevented from exploding. Second, by measuring the air pressure around it, the bomb would not explode until reaching a height of 7,000 feet (about 2,000 meters). And third, the radar mechanism gauged the distance from the ground.
atomic bombings of Hiroshima and Nagasaki - Encyclopedia Britannica
2024年11月18日 · Sixteen hours ago an American airplane dropped one bomb on Hiroshima, an important Japanese Army base. That bomb had more power than 20,000 tons of TNT. It had more than 2,000 times the blast power of the British “Grand Slam,” which is the largest bomb ever yet used in the history of warfare. The Japanese began the war from the air at Pearl ...
Bombing of Hiroshima and Nagasaki - HISTORY
2009年11月18日 · On August 6, 1945, during World War II (1939-45), an American B-29 bomber dropped the world’s first deployed atomic bomb over the Japanese city of Hiroshima. The explosion immediately killed...
The Most Fearsome Sight: The Atomic Bombing of Hiroshima
Despite the bomb’s moniker, it weighed nearly 10,000 pounds. As a result, the overloaded Enola Gay used more than two miles of runway to get aloft. At 7:15 a.m., the bomber crew armed the bomb, and the plane began its ascent to the bombing altitude of 31,000 feet.
Bombings of Hiroshima and Nagasaki - 1945 - Nuclear Museum
On August 6, 1945, the United States dropped an atomic bomb on the city of Hiroshima. The bomb was known as “Little Boy”, a uranium gun-type bomb that exploded with about thirteen kilotons of force. At the time of the bombing, Hiroshima was home to 280,000-290,000 civilians as well as 43,000 soldiers.
The Atomic Bombings of Hiroshima and Nagasaki - U.S. National Park Service
0916:02 (8:16:02 am in Hiroshima) After falling from the Enola Gay for 43 seconds, the Little Boy atomic bomb detonates 1,968 feet above Hiroshima, 550 feet (167.64 m) from the Aioi Bridge. Nuclear fission begins in 0.15 microseconds.
World War II - Hiroshima, Nagasaki, Atomic Bombs | Britannica
3 天之前 · 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 immediately killed ...
Atomic bombings of Hiroshima and Nagasaki - The bombing of Nagasaki ...
2024年11月18日 · The bomb descended to an altitude of 1,650 feet (500 meters) and, at 11:02 am, exploded over the Urakami Valley, northwest of the city center. Fat Man detonated with the explosive force of 21,000 tons of TNT.
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