brightness equation

19 LETTERS · STARTS WITH B

brightness equation is a valid 19-letter word worth 33 points in Scrabble and 37 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

B3R1I1G2H4T1N1E1S1S1E1Q10U1A1T1I1O1N1

3 + 1 + 1 + 2 + 4 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 10 + 1 + 1 + 1 + 1 + 1 + 1 =33 PTS

DOUBLE WORD → 66TRIPLE WORD → 99

MEANING

What does brightness equation mean?