Check out this fascinating video on various laser colours and their properties. I especially like the yellow laser and would love to have one, but at a safe 1mW power output that won't damage my eyesight.
I used to have a small 1mW, cheap, red one which was fascinating to play around with. Alas it was very old and doesn't work anymore.
SAFETY WARNING: Note the high power of the lasers in this video which can damage eyesight in an instant, possibly leading to permanent blindness, so precautions are critical. The second video below is actually the same one, but starting at 6 minutes where the presenter shows instructions explaining exactly how to handle such lasers. Just click it, then immediately pause it to read read them.
Those safety instructions:
You can buy the lasers shown in the video from here. They look to be very high quality and are very powerful.
tinkerlasers.com
I used to have a small 1mW, cheap, red one which was fascinating to play around with. Alas it was very old and doesn't work anymore.
SAFETY WARNING: Note the high power of the lasers in this video which can damage eyesight in an instant, possibly leading to permanent blindness, so precautions are critical. The second video below is actually the same one, but starting at 6 minutes where the presenter shows instructions explaining exactly how to handle such lasers. Just click it, then immediately pause it to read read them.
Those safety instructions:
You can buy the lasers shown in the video from here. They look to be very high quality and are very powerful.

Tinker Lasers
Check out our Limited Edition "Valkyrie" Lasers and our "White Laser" 90W Flashlight.
