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Questions
Explain why the planets do not twinkle.
Explain why, the planets do not twinkle at night.
Solution
Planets are much closer to the Earth and are seen as extended sources. So, a planet may be considered a collection of a large number of point-sized light sources. Although light coming from individual point-sized sources flickers but the total amount of light entering our eye from all the individual point-sized sources averages out to be constant. Thereby, planets appear equally bright and there is no twinkling of planets.
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