i want to buy a green or blue-violet laser and want to know how many mW to get to be able to visibly see the beam at say dusk but without being able to burn anything please reply
i know but at wha mW is a laser visible and wont burnTo see the beam it needs tO be dark.
i know but at wha mW is a laser visible and wont burn
i want to buy a green or blue-violet laser and want to know how many mW to get to be able to visibly see the beam at say dusk but without being able to burn anything please reply