| Revision as of 17:30, 31 October 2001 view source193.203.83.xxx (talk) Created | Revision as of 17:33, 31 October 2001 view source The Cunctator (talk | contribs)Autopatrolled, Administrators7,983 edits *Redirect LightNext edit → | ||
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| (Most) current physical theories hold that the speed of light (and all other ]) is constant, ragardless of time and place, or ]. This has been confirmed in our immediate neighborhood in space and time to a high degree of accuracy. | |||
| In ], the speed of light is given the symbol <i>c</i>. | |||
| Following the consequences of this idea led ] to develop the ]. | |||
| The speed of light is a defined constant, as both the ] unit of length and SI unit of time are respectively defined in terms of wavelengths and cycles of light. | |||
| Thus, the speed of light is <i>exactly</i> 299,792,458 metres per second. | |||
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