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Physics

Why the Sky is Blue (Rayleigh Scattering)

Quick fact

Rayleigh scattering is named after John William Strutt, 3rd Baron Rayleigh, who first described it in the 1870s.

Why this is interesting

Have you ever wondered why the sky above you is blue, but the sunset often glows red or orange? The answer lies in how sunlight interacts with the air itself.