Green laser pointer question?
Alright - I'm going to order a green laser from Amazon. I don't want it to be powerful enough to cause eye damage of ANY kind (casual use laser), but I want the beam to be easily seen at night for at least 50 yards or so. I am looking at some green 5MW 532nm (what is nm?) and some 20 MW lasers. I don't want it to burn or anything, so what so I choose?
Answers & Comments
If you do not want to buy powerful laser and cause damage, 5mW green laser pointer is safe which can reach 50 yards. nm is the wavelength of a laser pointer.
U can Google" LaserTo" and it is a good online laser store with 5mW green lasers which can meet your requirments.
nm is nanometer, which is the wavelength of laser, 650nm is red, 532nm is green , 473nm is blue, and 405nm is a violet color. If you're in the US you wont be able to easily get your hands on a laser above 5mw unless its approved by the FDA. I'd advise you to look at laser safety on wiki for lasers above 5mw. I believe you can see the beam of a 5mw at night though.
Remember lasers aren't toys. NEVER shine at aircrafts, cars or living beings.
The seller should be able to answer those questions, but the laser you describe can cause eye damage.