What is LASER?

 Help LASER Light Amplification Stimulated Emission Radiation
Light Amplification by Stimulated Emission of Radiation
LASERs
     A device that utilizes the natural oscillations of atoms or molecules between energy levels for generating coherent electromagnetic radiation in the ultraviolet, visible, or infrared regions of the spectrum. LASERs produces coherent light with a narrow range of wavelengths.

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