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❓ เคช्เคฐเคถ्เคจ / Question
Why does the sky appear blue?
✅ เคเคค्เคคเคฐ / Answer
Sunlight contains all colors. As it enters Earth's atmosphere, it collides with tiny air molecules.
Blue light has the shortest wavelength and scatters in all directions much more strongly than red or yellow (Rayleigh scattering).
The other colors pass mostly straight through. Our eyes detect this scattered blue light from every part of the sky, which is why it appears blue to us.
Key Point: This phenomenon is called Rayleigh Scattering,
named after British physicist Lord Rayleigh.
