write short note on twinkling of stars
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this is because of the atmospheric refraction of the light rays which takes some times to reach us
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The twinkling of stars is due to atmospheric refraction of the starlight the starlight on entering the earth atmosphere undergoes the refraction continuously before it reaches the earth atmospheric refraction occur in the medium of gradually changing refractive index.Since the atmosphere bends starlight towards the normal the apparent position of the star is slightly different from the actual position
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