In this video I show how bright the beam at night is on a 30mW laser from here:
http://www.dealextreme.com/details.dx... It only costs $25 with free shipping!
This video does not show what the beam really looks like at night, in real life the beam is much brighter.
Green Laser - Beam visible in the air! | |
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| Science & Technology | Upload TimePublished on 28 May 2008 |
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