why does sun appear white at noon ?
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Light is a spectrum made of 7 different colors-ROYGBIV(red,orange,yellow, green, blue, indigo and violet).Red colour has the highest wavelength and blue and it's shades have the least.
At noon, the sun is at the top and the light rays coming from it have to travel less distance in the atmosphere of earth. Hence, all colours get scattered very less, even blue.
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In the noon because the sun is overhead, there is least amount of scattering and hence appears white. When it is overhead, it has lesser air to travel through and scattering results from dust and other particles which will be reduced if the distance to be traveled in air is reduced.
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