Linkreincarnate said:NO!!!! Those goggle are only OD 4 for 532nm(or a green laser light) They may be fine for blue and uv but they are inadequate for a green laser. Taking a 120mW green beam to the eye through those means your eye still gets between 17-18 mW of rod deadening power. Enough to cause PERMANENT DAMAGE TO YOUR EYESIGHT. :'( (not trying to be rude but I can't stress that point enough.) You need goggles that have at least OD 4 @ 532nm for a 120mW green.
Where is the proof for your formula? Robjdixon's post contains accurate and proven information, backed up through research. I've never heard of your "natural logarithm" formula anywhere. I'm not trying to bash on you, but please don't spread around information like this unless you're 100% sure (And able to verify) that what you're saying is correct.
