The word LASER is the short of light amplification by stimulated emission of radiation. Laser is that device is which an intense, monochromatic, coherent and uni-directional light beam is obtained. It was discovered in 1950, by Townes and Shallow.
Thus, a Laser produces a light beam in which all the waves are of same frequency. all waves are in same phase and all waves travel in a definite direction
Thus, a Laser produces a light beam in which all the waves are of same frequency. all waves are in same phase and all waves travel in a definite direction
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