Black Body

A Body  Absorbs light in it Is called black body physically not of a body is a perfect absorber.This is a concept.Suppose a body is empty and have a small hole inside body.On the inner walls of body we coated Black colour material.This body is empty.When we enter light from hole in body these rays of light cannot come out at that time whenever we heat body.When we heat body this cavity works as perfect emmiter this is called black body radiator. So black body works as a complete absorber and perfect emmiter.

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Tags: Educatoinal Research, Scientific