conservation law | has definition Law that identifies a quantity, such as energy, that remains unchanged throughout a transformation. All conservation laws are thought to involve symmetries. | ![has source: Ferris, T. 1988 Coming of Age in the Milky Way, Morrow, 2001-09-27 09:33:56.0 has source: Ferris, T. 1988 Coming of Age in the Milky Way, Morrow, 2001-09-27 09:33:56.0](facet.gif) |
has definition A quantity that remains unchanged in the course of the evolution of a dynamical system. There are seven known quantities that are conserved: energy (including mass), momentum, angular momentum (including spin), charge, electron-family number, muon-family number, and baryon-family number. | ![has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:33:56.0 has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:33:56.0](facet.gif) |
is a kind of law | ![2001-09-27 09:33:56.0 2001-09-27 09:33:56.0](facet.gif) |
law | has discoverer | ![2001-09-27 09:33:53.0 2001-09-27 09:33:53.0](facet.gif) |
theory | has validity correct or incorrect with caveats | ![2001-09-27 09:33:53.0 2001-09-27 09:33:53.0](facet.gif) |
has author or reasearch group | ![2001-09-27 09:33:53.0 2001-09-27 09:33:53.0](facet.gif) |
has domain a field of research | ![2001-09-27 09:33:53.0 2001-09-27 09:33:53.0](facet.gif) |
has date or a range of dates for which the theory was active | ![2001-09-27 09:33:53.0 2001-09-27 09:33:53.0](facet.gif) |