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 ...
In order for fission to produce energy, the total binding energy of the resulting elements must be less negative (higher energy) than that of the starting element. Fission is a form of nuclear transmutation because the resulting fragments are not the same element as the original atom.uclear fission produces energy for nuclear power and drives the explosion of nuclear weapons. Both uses are possible because certain substances called nuclear fuels undergo fission when struck by fission neutrons, and in turn emit neutrons when they break apart.