Atomic Bomb: Nuclear Bomb, Hiroshima & Nagasaki ‑ HISTORY
网页2017年9月6日 · The atomic bomb and nuclear bombs are powerful weapons that use nuclear reactions as their source of explosive energy. Scientists first developed nuclear weapons technology during World War...
Atomic bomb | History, Properties, Proliferation, & Facts
网页2024年8月25日 · atomic bomb, weapon with great explosive power that results from the sudden release of energy upon the splitting, or fission, of the nuclei of a heavy element such as plutonium or uranium.
History of nuclear weapons - Wikipedia
网页Britain and France built their own systems in the 1950s, and the number of states with nuclear capabilities has gradually grown larger in the decades since. A nuclear weapon, also known as an atomic bomb, possesses enormous destructive power from nuclear fission, or a combination of fission and fusion reactions.
Science Behind the Atom Bomb - Nuclear Museum
网页2014年6月5日 · The immense destructive power of atomic weapons derives from a sudden release of energy produced by splitting the nuclei of the fissile elements making up the bombs’ core. The U.S. developed two types of atomic bombs during the Second World War. The first, Little Boy, was a gun-type weapon with a uranium core.
Bombing of Hiroshima and Nagasaki - HISTORY
网页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...
Atomic bombings of Hiroshima and Nagasaki - Wikipedia
网页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 nuclear weapons in an armed conflict.
atomic bombings of Hiroshima and Nagasaki - Encyclopedia Britannica
网页2024年8月25日 · Atomic bombings of Hiroshima and Nagasaki, during World War II, American bombing raids on the Japanese cities of Hiroshima (August 6, 1945) and Nagasaki (August 9, 1945) that marked the first use of atomic weapons in war. Tens of thousands were killed in the blasts and thousands more would die of radiation poisoning.
The Most Fearsome Sight: The Atomic Bombing of Hiroshima
网页At 2:45 a.m. on Monday August 6, 1945, three American B-29 bombers of the 509th Composite Group took off from an airfield on the Pacific island of Tinian, 1,500 miles south of Japan. Colonel Paul Tibbets piloted the lead bomber, “Enola Gay,” which carried a nuclear bomb nicknamed “Little Boy.”
"Destroyer of Worlds": The Making of an Atomic Bomb
网页At 5:29 a.m. (MST) on July 16, 1945, the world’s first atomic bomb detonated in the New Mexican desert, releasing a level of destructive power unknown in the existence of humanity. Emitting as much energy as 21,000 tons of TNT and creating a fireball that measured roughly 2,000 feet in diameter, the first successful test of an atomic bomb ...
Bombings of Hiroshima and Nagasaki - 1945 - Nuclear Museum
网页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.
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