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Speed of light   /spid əv laɪt/   Listen
Speed of light

noun
1.
The speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 299,792,458 meters per second.  Synonyms: c, light speed.





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"Speed of light" Quotes from Famous Books



... would know that," replied the second man. "It was through quantum mechanics that we learned to approximate the speed of light. While nine years pass on Earth when we make the trip, our RT is ...
— The Quantum Jump • Robert Wicks


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