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 ...
Nuclear Fission versus Nuclear Fusion comparison chart; Nuclear Fission Nuclear Fusion; Definition: Fission is the splitting of a large atom into two or more smaller ones. Fusion is the fusing of two or more lighter atoms into a larger one. Natural occurrence of the process: Fission reaction does not normally occur in nature. Fusion occurs in stars, such as the sun. Byproducts of the reaction: Fission produces many highly radioactive particles.