Question

Why does the sunset appears red or orange in colour?​

Answer 1

The red light waves are scattered the least atmospheric gas molecules. So at sunrise and sunset, when the sunlight travels long path through the atmosphere to reach our eyes, the blue light is mostly removed and it appears red and orange light remaining.

Answer 2

Answer:

The light from the sun needs to travel more distance in atmosphere during sunrise and sunset to reach our eyes. In morning and evening times, during sunrise and sunset, except red light all colours scatter more and vanish before they reach us. Since scattering of redlight is very small, it reaches us. As a result sun appears red in colour during sunrise and sunset.

Explanation:

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