Don't use a green laser in the cold!
14:41
LASER Headlamp for Cars?!? How strong is its laser? | Find out how it works and how to power it up
11:27
Bad Beams? | How divergent are lasers?
18:43
Testing dangerous DIY "medical" lasers from eBay
13:08
Laser Pointers on Amazon are Getting Out of Hand
11:44
Don't use strong lasers without this - easy to make!
15:48
¡No creerás lo que hice con esta vieja RADIO! Poca gente lo sabe!!
16:37
Fabricación de una prensa de hielo
20:08