It's about absorption dude. How much light at a certain frequency do you absorb or reflect back. A weak green laser might pop a red balloon, but not a green one. At these wattages it doesn't mean much, it's annihilating anything it hits and stays on for awhile. Blue just penetrates water best. PAR 1 billion
Dary, if you want to feel like Luke Skywalker, lay open a black trash bag and hang it like a screen. Put your safety glasses on and have a blast. Nobody unprotected in the room.
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