What mechanism is responsible for a cloud appearing white to an observer?

Answer

Mie scattering of all visible light wavelengths equally

Clouds are made of water droplets large enough relative to visible light wavelengths to cause Mie scattering, which scatters all colors of light equally, resulting in a white appearance.

What mechanism is responsible for a cloud appearing white to an observer?

#Videos

NASA Spotlite: What are clouds made of? - YouTube

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