When the Sun is directly overhead, why does the light that reaches our eyes directly from the Sun appear slightly yellowish-white?

Answer

Because the path traveled through the atmosphere is the shortest possible distance.

When the Sun is high, the light rays travel the shortest distance through the atmosphere. While blue light is scattered around us, only a small fraction is scattered away before the light reaches us directly from the Sun, causing it to look slightly yellowish-white.

When the Sun is directly overhead, why does the light that reaches our eyes directly from the Sun appear slightly yellowish-white?

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