Nuclear explosion - Wikipedia
A nuclear explosion is an explosion that occurs as a result of the rapid release of energy from a high-speed nuclear reaction. The driving reaction may be nuclear fission or nuclear fusion or a multi-stage cascading combination of the two, though to date all fusion-based weapons have used a fission device to initiate fusion, and a pure fusion ...
Atomic bombings of Hiroshima and Nagasaki - Wikipedia
The atomic bomb explosion generated a windstorm several kilometers wide that carried ash, dust, and debris over the mountain ranges surrounding Nagasaki. Approximately 20 minutes after the bombing, a black rain with the consistency of mud or oil came down carrying radioactive material for one to two hours before turning clear. [227]
Effects of nuclear explosions - Wikipedia
The effects of a nuclear explosion on its immediate vicinity are typically much more destructive and multifaceted than those caused by conventional explosives. In most cases, the energy released from a nuclear weapon detonated within the lower atmosphere can be approximately divided into four basic categories: [1]
(48)Why was the atomic bomb detonated at a height of 600 …
2009年3月23日 · An exhibit at Hiroshima Peace Memorial Museum explains that the atomic bomb exploded 600 meters above the ground. On the U.S. side, a copy of the military's order to attack with the atomic bomb, dated July 24, 1945, reads: "The bomb should be detonated approximately 2,000 feet above the ground."
What happens when a nuclear bomb explodes? | Live Science
2023年8月1日 · Christopher Nolan's movie Oppenheimer, released during Russia's continuing war with Ukraine, has renewed public interest in atomic weapons just as the risk of a nuclear conflict heightens. But...
The Most Fearsome Sight: The Atomic Bombing of Hiroshima
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 …
atomic bombings of Hiroshima and Nagasaki - Encyclopedia Britannica
2025年1月17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 initial explosions and many more would later succumb to radiation poisoning.
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...
Atomic bomb | History, Properties, Proliferation, & Facts - Britannica
2024年12月16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. The properties and effects of atomic bombs
The Atomic Bombing of Hiroshima and Nagasaki, August 1945
2021年6月7日 · The United States bombings of the Japanese cities of Hiroshima and Nagasaki on August 6 and August 9, 1945, were the first instances of atomic bombs used against humans, killing tens of thousands of people, obliterating the cities, and …