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The Epic Interactive Encyclopedia 1998
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Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
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Laser
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1992-09-03
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671b
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21 lines
Laser is the appreviation for "light
amplification by stimulated emission of
radiation"
A laser is a device for producing a narrow
beam of light, capable of travelling over
vast distances without dispersion, and of
being focused to give enormous power
densities (108 watts per cm2 for high-energy
lasers). The laser operates on a principle
similar to that of the maser
(a high-frequency microwave amplifier or
oscillator). The uses of lasers include
communications (a laser beam can carry much
more information than can radio waves),
cutting, drilling, welding, satellite
tracking, medical and biological research,
and surgery.
Subject by: Stuart Dicker