Global Clue

A fundamental constant of nature and physics defined by the vacuum propagation rate of electromagnetic radiation, exactly 299,792,458 metres per second

Let's find possible answers to "A fundamental constant of nature and physics defined by the vacuum propagation rate of electromagnetic radiation, exactly 299,792,458 metres per second" crossword clue. First of all, we will look for a few extra hints for this entry: A fundamental constant of nature and physics defined by the vacuum propagation rate of electromagnetic radiation, exactly 299,792,458 metres per second. Finally, we will solve this crossword puzzle clue and get the correct word. We have 1 possible solution for this clue in our database.