Related Terms. Ratio of the density of a substance at 20Â°C or 68Â°F to the density of water at 4Â°C or 39.2Â°F.
Flare ... Fission. In nuclear physics, the splitting of the atomic nucleus of a heavy element, resulting in the emission of nuclear energy and possibly causing a chain reaction (with similar results) within a mass of the element.Fission, Nuclear ... is a splitting of something into two parts. ~ may refer to:*In physics, nuclear ~ is a process where a large atomic nucleus is split into two smaller particles.... and other physical processes. In popular culture ...
During induced nuclear fission, the heavy nucleus (as uranium-235 and/or plutonium-239) is split through bombardment with a neutron into two (or less frequently three) fragments plus emitting 2-3 neutrons.n nuclear physics and nuclear chemistry, nuclear fission is a nuclear reaction in which the nucleus of an atom splits into smaller parts, often producing free neutrons and lighter nuclei, which may eventually produce photons (in the form of gamma rays).