LIGHTSECOND

Light-second

A light-second is a unit of length useful in astronomy, telecommunications and relativistic physics. It is defined as the distance that light travels in free space in one second, and is equal to exactly 299,792,458 metres. It is just over 186,282 miles and almost feet.

The above text is a snippet from Wikipedia: Light-second
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light second

Noun

  1. A unit of length equal to the distance light travels in one second


The above text is a snippet from Wiktionary: light second
and as such is available under the Creative Commons Attribution/Share-Alike License.

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