beatiful light pattern green

http://www.kitlaser.com/can-be-loaded-with-kaleidoscope.html

The green laser is a typical astronomer using the weapon, as shown by the analog beam. Because it's the brightest laser pointer . The 5 mW laser is a strong narrow beam that is powered by two AAA batteries and emits light at a wavelength of 532 nanometers. In the evening, the beam is meters hundreds or thousands, depending on the weather conditions visible. This device can buy less than $ 20 from many places.
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By laserasp
Added Aug 11

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