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Uploaded by utjgtq85 on Aug 10, 2009
I stumbled upon this video made by http://www.laserpointerpen.net and i'm wondering how they make the laser beam so big in size. Need to learn something about beam divergence now.
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Those lasers also have apertures, so you can focus. ; )
MitremTheMighty 2 years ago
I believe they use lenses.
tmhurley27 2 years ago
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Those lasers also have apertures, so you can focus. ; )
MitremTheMighty 2 years ago
I believe they use lenses.
tmhurley27 2 years ago