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Red (660, 635nm), green (532, 520nm), and blue (445, 405nm) lasers

A laser is a machine that makes an amplified, single-color source of light. It uses special gases or crystals to make the light with only a single color. The gases are energized to make them emit light. Then mirrors are used to amplify (make stronger) the light. In many lasers all the light travels in one direction, so it stays as a narrow beam of Collimated light that does not get wider or weaker as most sources of light do.

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Ben 10 | Ben and Kevin 11 Team Up For Laser Tag | Cartoon Network

Ben 10 | Ben and Kevin 11 Team Up For Laser Tag | Cartoon Network
Mechanical Laser Show

Mechanical Laser Show
Magic Laser Trick | JUNK DRAWER MAGIC

Magic Laser Trick | JUNK DRAWER MAGIC
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