Occasionally, when the size of the suspended particles is similar to the primary wavelengths of visible light, the Sun can appear blue, even at noon.

Question

Quizplus · Accepted Answer

This phenomenon occurs due to Rayleigh scattering, where particles in the atmosphere scatter shorter wavelengths of light, like blue, more than longer wavelengths, making the Sun appear blue under certain conditions.

Occasionally, When the Size of the Suspended Particles Is Similar