
A TEA Laser is Nitrogen Laser that operates at standard pressure and temperature. In fact, many operate using normal air which is over 75% N2. Normal air has a property known as super radiance. This means that air can produce a laser beam without bouncing light with mirrors that most lasers require....
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adam 101Continue Reading »Source: http://www.instructables.com/id/How-to-build-a-TEA-Laser/
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