What is light????????
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Light or visible light is electromagnetic radiation within the portion of the electromagnetic spectrum that can be perceived by the human eye. Visible light is usually defined as having wavelengths in the range of 400–700 nm, between the infrared and the ultraviolet
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Haa eto mane pn khabar chhe..
But emne pathri updi chhe 4days thi..
And e aaj to bed pr thi uthi pn ny sakta..
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