The sun does not emit yellow light like you’ve been taught.
It emits White light…and white light is made up of all the different colors of the rainbow.
I can prove it to you by this glass of water. See how the sun’s light gets diffracted into its component colors?
This diffraction happens because the light interacts with the water molecules and diffractsinto the different colors of light.
Similarly, when the light from the sun goes through the earth’s atmosphere, It so happens that the white light from the sun gets scattered by the molecules in the air.
Shorter wavelength light is scattered more than longer wavelength light. Violet and Blue are shorter wavelength than red, green, or yellow.
These two colors are scattered the most so that is what you see…
Wait…the sky is blue, I don’t see any violet you say?
Ahhh…this is where your eyes deceive you. You should see violet…but…You see the receptors in your eyes most sensitive to red, green, and blue. Your eyes perceive violet as a combination of red and blue.
The net effect is that what you “see” is mostly blue with a tinge of red. If you had dedicated violet receptors in your eyes, the sky would appear mostly violet with a tinge of blue.
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