A lab friend of mineworked with a laser powerful enough to blind you after reflection off 7 matte-black surfaces. I always found that slightly alarming.
(
Ugi , it's a game of give and cake,
Fri 16 Apr 2010, 12:23,
archived)
Lasers are serious business.
It's amazing how much power they have.
Colonel Boris "...a desperate Buzzfeed imitation...",
Fri 16 Apr 2010, 12:28,
archived)