OPTICS

Science of light (6)

Solution has appeared in 2 crosswords (0 across and 2 down):

• Quick crossword No 16,493 — 2023-03-17 00:00:25
  16D: Study of the behaviour of light (6)
• Quick crossword No 15,616 — 2020-05-25 23:00:04
  4D: Science of light (6)