what color is the sky

The sky is not a color. The sky is many layers of various gasses. As light passes though, it is diffuses. Different substances have different refraction angles for various wavelengths. Reflected light from the earth's surface may additionally be reflected numerous other times and continue to filter. Within the visible spectrum of light, we observe the color blue, because other frequencies of light have been filtered off through this process.

God has nothing to do with what color we observe when we look above.

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lue Eyes Are Not Actually Blue

March 7, 2011 at 2:00 am Chad Upton 7 comments

By Chad Upton | Editor
The most common eye color is brown and the least common is green. Eye color is determined by a number of genes, the actual number of which is unknown. Using six known genes, scientists can predict eye color from brown to blue with 90% accuracy.
The darkness of brown eyes is determined by the amount of melanin (pigment) in them. Blue eyes have little or no melanin, making them translucent; they only appear blue because of an optical illusion known as the Tyndall effect.

The color we perceive something to be is usually due to their pigment, but somethings appear colored for other reasons. Structural colors are one classification of colors that occur not because of their pigment but because of the way light interacts with the matter.
Without getting too technical, different colors of light have different wavelengths. When those waves pass through matter, they can be filtered or scattered in different ways. The Tyndall effect occurs when a light scattering particulate is suspended in a light transmitting medium and the size of the individual particulate is slightly below or near that of the visible spectrum of light.
Some things that appear to be colored due to optical effects are: blue jay and peacock feathers, mother of pearl, butterfly wings, beetle shells, bubbles, oil slicks and one we see every day: the sky.
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