Lasers sound scary. The word conjures visions of 1950's science fiction – earthlings vaporized with one zap of a futuristic weapon wielded by an alien. But a laser is simply a device that generates a focused beam of light energy. This technology allows the clerk at the grocery store to scan bar codes and lets you listen to music on compact disc.
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Category : Alternative Treatments Posted : 27/03/2012 Price : Check with seller Location : Delhi(Delhi)