Traveller's instrument on journey shows highest possible mph - Crossword Clue

Crossword Clue Last Updated: 04/08/2021

Below are possible answers for the crossword clue Traveller's instrument on journey shows highest possible mph.

14 letter answer(s) to traveller's instrument on journey shows highest possible mph

SPEED OF LIGHT
  1. C - 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
  2. 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

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