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Nuclear fission is a reaction in which the nucleus of an atom splits into two or more smaller nuclei, releasing large amounts of energy and neutrons. Learn about the discovery, mechanism, products, and uses of fission for nuclear power and weapons.
Fission is the division of a single entity into two or more parts and the regeneration of those parts to separate entities resembling the original. Learn about binary fission in prokaryotes and eukaryotes, multiple fission in protists, and the types and mechanisms of fission.
A nuclear reaction is a process in which two nuclei or a nucleus and an external particle collide to produce one or more new nuclides. Learn about the history, types, equations, and conservation laws of nuclear reactions, and see examples of nuclear fission and fusion.
The web page traces the history of nuclear fission from the discovery of radioactivity by Becquerel and the Curies to the Nobel Prize-winning work of Hahn, Meitner, Strassmann and Frisch in 1938. It also explains the mechanism, applications and background of fission, and the role of neutrons, isotopes and elements in the process.
A nuclear reactor is a device that controls a nuclear chain reaction to produce heat, which can be used for electricity, propulsion, or other purposes. Learn how fission, neutrons, control rods, and moderators work in different types of reactors and their applications.
The first light bulbs ever lit by electricity generated by nuclear power at EBR-1 at Argonne National Laboratory-West, December 20, 1951. [2]The discovery of nuclear fission occurred in 1938 following over four decades of work on the science of radioactivity and the elaboration of new nuclear physics that described the components of atoms.
Learn about the discovery, scientific background and history of nuclear technology, which involves the nuclear reactions of atomic nuclei. Explore the different types of nuclear technology, such as nuclear fission, fusion, medicine and weapons, and their uses and challenges.
Critical mass is the smallest amount of fissile material needed for a sustained nuclear chain reaction. Learn how critical mass depends on nuclear properties, density, shape, temperature, and surroundings, and how it affects nuclear weapons and reactors.