Your welcome! It is pretty amazing indeed how quickly yellow changes indeedThat is a great link about wavelength to color.
PS. The color yellow seems to be such a narrow band. Just several nm to one side or the other and it looks like green or orange :/
Oh gotcha, I thought you meant just looking "at" the beam, not into it sorry. Agreed, staring into a laser no matter the power should be avoided!@LeHap, no I don't mean the aperture. Laser beams diverge so little that staring into the beam 50 feet away from the laser aperture is still bad. Small difference, but few people understand that lasers are still dangerous even away from the aperture itself
I wouldn't recommend anything over 5mW. With that tight of a budget, you'd be better off saving the trouble with goggles and just get an "eye-safe" pointer
I have to agree here. Once you buy a decent laser you tend want more lasers, or more power. It would be wise to invest in a pair of laser safety glasses/goggles. Always protect your seeing balls, you only get one pair, and it only takes one mishap to damage or lose your sight.I usually say when buying a first laser you should get safety glasses first then buy a laser. good luck though, post pics of what ya get..