Why in hot countries, buildings are painted white, and residents wear light-colored clothes?

In hot countries, buildings are painted white and residents wear light-colored clothes for the following reason: it is known that black absorbs the sun’s rays, and white reflects them. This is due to the fact that white contains more spectra, so it can reflect rays, and black has fewer spectra, so it can absorb rays rather than emit them. Thus, the white color allows the garment to heat up less during sunny weather.

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