Nuclear weapon - Wikipedia
网页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 ...
网页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. Fission weapons are commonly referred to as atomic bombs, and fusion weapons are referred to as thermonuclear bombs or, more commonly, hydrogen bombs.
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.
Nuclear Weapons - Our World in Data
网页Nine countries currently have nuclear weapons: Russia, the United States, China, France, the United Kingdom, Pakistan, India, Israel, and North Korea. These nuclear powers differ a lot in how many nuclear warheads they have. The chart shows that while most have dozens or a few hundred warheads, Russia and the United States have thousands of them.
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...
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.
How the advent of nuclear weapons changed the course of history
网页2020年7月15日 · In the 75 years since the first successful test of a plutonium bomb, nuclear weapons have changed the face of warfare. Here, troops in the 11th Airborne division watch an atomic explosion...
United States nuclear weapons, 2024 - Bulletin of the Atomic …
网页2024年5月7日 · The United States is modernizing its nuclear bomber force by upgrading nuclear command-and-control capabilities on existing bombers, developing enhanced nuclear weapons (the B61–12, B61–13, and the new AGM-181 Long-Range Standoff Weapon or LRSO), and designing a new heavy bomber (the B-21 Raider).
Russia’s Next-Generation Nuclear Missile Failed a Test, Evidence ...
网页5 小时之前 · This month’s apparent test failure was at least the second in the past two years; American officials said that a test of the Sarmat also failed in February 2023, U.S. news outlets reported at ...
Status of World Nuclear Forces - Federation of American Scientists
网页2024年3月29日 · Combined, the United States and Russia now possess approximately 88 percent of the world’s total inventory of nuclear weapons, and 84 percent of the stockpiled warheads available for use by the military.
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