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fission |
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fission, in physics: see nuclear energy nuclear energy, the energy stored in the nucleus of an atom and released through fission, fusion, or radioactivity . In these processes a small amount of mass is converted to energy according to the relationship E = mc2, where E ..... Click the link for more information. and nucleus nucleus, in physics, the extremely dense central core of an atom . The Nature of the NucleusCompositionAtomic nuclei are composed of two types of particles, protons and neutrons, which are collectively known as nucleons. ..... Click the link for more information. ; see also atomic bomb atomic bomb or A-bomb, weapon deriving its explosive force from the release of atomic energy through the fission (splitting) of heavy nuclei (see nuclear energy ). The first atomic bomb was produced at the Los Alamos, N.Mex. ..... Click the link for more information. . fission 1. Biology a form of asexual reproduction in single-celled animals and plants involving a division into two or more equal parts that develop into new cells 2. short for nuclear fission fission [′fish·ən] (biology) A method of asexual reproduction among bacteria, algae, and protozoans by which the organism splits into two or more parts, each part becoming a complete organism. (nuclear physics) The division of an atomic nucleus into parts of comparable mass; usually restricted to heavier nuclei such as isotopes of uranium, plutonium, and thorium. Also known as atomic fission; nuclear fission. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Neutrons emitted from splitting atomic nuclei are usually too fast to trigger subsequent fissions, but water has a knack for slowing down neutrons. Two basic outcomes are possible: Either the two nuclei fuse into a lasting larger one, or the emerging heavy nucleus quickly splits, or fissions, into two pieces. Eventually, if rotated fast enough, the nucleus will deform so much it fissions, or breaks in two. |
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