cherenkov radiation

19 LETTERS · STARTS WITH C

cherenkov radiation is a valid 19-letter word worth 31 points in Scrabble and 34 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

C3H4E1R1E1N1K5O1V4R1A1D2I1A1T1I1O1N1

3 + 4 + 1 + 1 + 1 + 1 + 5 + 1 + 4 + 0 + 1 + 1 + 2 + 1 + 1 + 1 + 1 + 1 + 1 =31 PTS

DOUBLE WORD → 62TRIPLE WORD → 93

MEANING

What does cherenkov radiation mean?