nuclear fission

listen to the pronunciation of nuclear fission
English - English
a nuclear reaction in which a large nucleus splits into smaller ones with the simultaneous release of energy
splitting of an atom's nucleus into two equal parts
the splitting of the nucleus (=central part) of an atom which results in a lot of power being produced. Division of a heavy atomic nucleus into two fragments of roughly equal mass, accompanied by the release of a large amount of energy, the binding energy of the subatomic particles. The energy released in the fission of one uranium nucleus is about 50 million times greater than that released when a carbon atom combines with oxygen atoms in the burning of coal. The energy appears as kinetic energy of the fragments, which converts to thermal energy as the fragments collide in matter and slow down. Fission also releases two or three free neutrons. The free neutrons can bombard other nuclei, leading to a series of fissions called a chain reaction. The energy released from nuclear fission is used to generate electricity, to propel ships and submarines, and is a source of the vast destructive power of nuclear weapons
nuclear fission
Favorites