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The sun is still visible even though it's slightly below horizon..... which wave interaction is this

User Anna Poorani
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1 Answer

21 votes
21 votes
Refraction
Refraction at Sunrise and Sunset
Atmospheric refraction makes the Sun visible even when it is just below the horizon. This effect is especially powerful for objects that appear close to the horizon, such as the rising or setting Sun, because the light rays enter the Earth's atmosphere at a particularly shallow angle.
User Mehdi Sakout
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