'speed of light' in a sentence
Learn how to use 'speed of light' with 2 example sentences.
See meaning of 'speed of light'
- speed of light noun
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: 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
Everything happened at the speed of light.
The speed of light is much greater than that of sound.