Home Preparation for National Talent Search Examination (NTSE)/ Olympiad
Chapter : 5. Human Eye & Colourful World
Colour of the sun at sunrise and sunset
(c) Colour of the sun at sunrise and sunset The sky and the Sun at sunset or sunrise appears red. Near the horizon, most of the blue light and shorter wavelengths are scattered away by the particles. Therefore, the light that reaches our eyes is of longer wavelengths. This gives rise to the reddish appearance of the Sun.