can you feel an ordinary 5 mW red laser pointer on your skin? it seems to me that i can but i didn't do a double blind test yet
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Anecdotally, though, I don't remember ever feeling any heating effects from any of my lasers. My two biggest ones put out about 2W of continuous power. I know the 10W+ projectors can bleach paint on walls in some situations, but I don't know if that's a heating effect.
Oh you can *definitely* feel heat from 1W. That'll sting after a few seconds. True 5mW though? Less likely.
