Nuclear weapon - Wikipedia
A nuclear weapon [a] is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or a combination of fission and fusion reactions (thermonuclear bomb), producing a nuclear explosion. Both bomb types release large quantities of energy from relatively small amounts of matter.
Nuclear weapon | History, Facts, Types, Countries, Blast Radius ...
6 天之前 · A nuclear weapon is a device designed to release energy in an explosive manner as a result of nuclear fission, nuclear fusion, or a combination of the two processes. Are there treaties to control the proliferation of nuclear weapons?
Nuclear weapon design - Wikipedia
To understand how nuclear weapons are designed, it is useful to know the important similarities and differences between fission and fusion. The following explanation uses rounded numbers and approximations. [5]
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. Fission Sequence of events in the fission of a uranium nucleus by a neutron.
History of nuclear weapons - Wikipedia
Trinity-Gadget, an implosion-type plutonium device tested on July 16, 1945, by the United States was the first successful nuclear weapon ever created. It yielded approximately 25 kilotons of TNT.
Nuclear weapon - Radiation, Fallout, Destruction | Britannica
4 天之前 · The prompt effects of a nuclear explosion and fallout are well known through data gathered from the attacks on Hiroshima and Nagasaki in Japan; from more than 500 atmospheric and more than 1,500 underground nuclear tests conducted worldwide; and from extensive calculations and computer modeling.
How Nuclear Bombs Work - HowStuffWorks
2022年3月1日 · Nine countries hold the 13,000 nuclear weapons in the global stockpile. That's less than during the Cold War but it doesn't change the fact that these bombs are still a threat to global humanity. So how do they work and are we close to nuclear war?
Atomic Bomb: Nuclear Bomb, Hiroshima & Nagasaki ‑ HISTORY
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...
Science Behind the Atom Bomb - Nuclear Museum
2014年6月5日 · Once enough U-235 was obtained to power the bomb, Little Boy was constructed using a gun-type design that fired one amount of U-235 at another to combine the two masses. This combination created a critical mass that set off …
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...