Why is cloud white ?

Cloud is a visible accumulation of very tiny water droplets or solid ice crystals that float in the air (troposphere). Clouds are usually white in appearance due to the fact that in reflects (scatter) all the visible wavelengths of lights from the sun. The suns light is made up of different colors (rainbow colors )that appear as a white light when combined.These color can be demonstrated using a prism that scatters the suns light (white light ).The water droplets or ice crystals that make up the cloud reflect all the light of the seven visible wave lengths (red, orange,yellow,green,blue,indigo,and violet) all together without dispersing each color. Thus, clouds are white because they effectively reflect the wave lengths of visible light spectrum of the sun (called Mie scattering)  in all direction more or less equally. 

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