why does sun look a little oval at the horizon
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Sun look a little oval at the horizon because of variation in Atmospheric refraction. As the retractive index of atmosphere is different we see sun as little oval.
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Answer:
As the sun sets, the light emitted must pass through an increasingly thick layer of air, which tends to bend the light rays away from the horizon. The bottom of the sun is closer to the horizon than the top, so the effect becomes more pronounced, making the sun appear squished and oblate.
Explanation:
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