A LASER (Light Amplified by Stimulated Emission of Radiation) is a coherent beam of light radiation. Light of a specific wavelength is amplified and "bounces" off a series of mirrors inside the laser through a "gain medium", until a portion of the light is passed through the laser and is directed as a beam outward. Lasers have been used to store optical data (such as that on a CD), and is the basic contravance for Holovision sets and communications.
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