Nuclear fission is a reaction in which the nucleus of an atom splits into two or more smaller nuclei. The fission process often produces neutrons and gamma rays, and releases a very large amount of en
The cooling towers of the Philippsburg Nuclear Power Plant in Germany
The mushroom cloud of the atomic bomb dropped on Nagasaki, Japan, on 9 August 1945 rose over 12 kilometres (7.5 mi) above the bomb's hypocenter, which killed an estimated 39,000 people.
Otto Hahn and Lise Meitner in 1912
The nuclear fission display at the Deutsches Museum in Munich. The table and instruments are originals, but would not have been together in the same room.
A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either nuclear fission or a combination of fission and nuclear fusion reactions, producing a nuclear
Nuclear fission
…to sustain a nuclear chain reaction allows nuclear power plants to operate in a delayed critical state for a controllable energy release, and also for nuclear weapons to operate at a prompt supercritical state for an uncontrolled energy release occurring in about a microsecond. Fission is a form of nuclear transmutation…
The Trinity test of the Manhattan Project was the first detonation of a nuclear weapon, which led J. Robert Oppenheimer to recall verses from the Hindu scripture Bhagavad Gita: "If the radiance of a thousand suns were to burst at once into the sky, that would be like the splendor of the mighty one" ... "I am become Death, the destroyer of worlds".
Edward Teller, often referred to as the "father of the hydrogen bomb"
Soviet OTR-21 Tochka missile. Capable of firing a 100-kiloton nuclear warhead a distance of 185 km
The first nuclear weapons were gravity bombs, such as the "Fat Man" weapon dropped on Nagasaki, Japan. They were large and could only be delivered by heavy bomber aircraft