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What is laser?

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What is laser?
posted Aug 31, 2018 by Omkar Gond

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A laser is a coherent and focused beam of photons; coherent, in this context, means that it is all one wavelength, unlike ordinary light which showers on us in many wavelengths. The acronym laser stands for "light amplification by stimulated emission of radiation."Many a times laser is used for the laser device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation.

answer Aug 31, 2018 by Salil Agrawal