Question

hi friend here is my question what is defraction

Answer 1

Hi friend here is your answer.

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Diffraction is the slight bending of light as it passes around the edge of an object. 

For example, the closely spaced tracks on a CD or DVD act as adiffraction grating to form the familiar rainbow pattern seen when looking at a disc.

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Answer 2

the process by which a beam of light or other system of waves is spread out as a result of passing through a narrow aperture or across an edge, typically accompanied by interference between the wave forms produced.