The E Equals Mc Square Guy
This page is the CodyCross answer for the clue below from Architectural Styles, Group 1173, Puzzle 4 (Restoration).
Question is: The E Equals Mc Square Guy
and the answer is: EINSTEIN
Word Meaning:
EINSTEIN — (photochemistry, dated) One mole of photons, regardless of frequency, as used to measure irradiance.
Definitions from Wiktionary.