speed of light

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  • noun

Synonyms for speed of light

the speed at which light travels in a vacuum

References in periodicals archive ?
I think they had meant to say "speed of light", which everyone knows is 299,792,458 m/s.
A meter is defined as the distance light travels in 1/299,792,458 seconds, which fixes c to the value 299,792,458 m/s.
Gezari [1] reported a difference of 200 [+ or -] 10 m/s to the known value (c = 299,792,458 m/s according to [1]), which is in accordance with the speed of the observatory on the earth to the retro-reflector on the moon.
Sam Burson E=MC: E is energy (light, heat, radiation), M is mass in Kg and C is the speed of light, (about 299,792,458 meters per second).
Since 1983 we have referred length to a combination of velocity and time, time already being defined, as stated above, in terms of the caesium atom, and the velocity of light now being defined as exactly 299,792,458 metres per second, so that today we say that one metre is exactly 1/299,792,458 of the distance that light travels in 9,192,631,770 ticks of our caesium clock (if that clock is keeping good time .