speed of light

== English == === Pronunciation === === Noun === speed of light (plural speeds of light, abbreviation c) (physics) The speed of electromagnetic radiation, which in a perfect vacuum is equivalent to 299,792,458 metres per second. Alternative form: c (symbol) Synonyms: lightspeed, light speed, Einstein's constant, Einstein barrier (colloquial, figurative) A very rapid speed. (cellular automata) A rate of travel of a signal equal to one cell per generation, the fastest possible speed in the Moore and von Neumann neighborhoods. ==== Translations ==== ==== See also ==== === Further reading === speed of light on Wikipedia.Wikipedia speed of light (cellular automaton) on Wikipedia.Wikipedia