The sun is visible a little before it rises on the horizon and a little after it sets below the horizon. This is the consequence of the phenomenon of _____?

The sun is visible a little before it rises on the horizon and a little after it sets below the horizon. This is the consequence of the phenomenon of _____?

سورج افق پر طلوع ہونے سے تھوڑا پہلے اور افق سے نیچے غروب ہونے کے بعد نظر آتا ہے۔ یہ _____ کے رجحان کا نتیجہ ہے؟
Explanation

The sun is visible a little before it rises and a little after it sets because of atmospheric refraction.

Refraction is the phenomenon that occurs when light changes direction as it passes from one transparent medium to another.