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| 06 Oct 2015 09:56 PM |
Why are they called buildings if they are already built?
Dank since birth |
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Zwuh
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| Joined: 01 Sep 2010 |
| Total Posts: 10820 |
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Uias
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| Joined: 14 Mar 2012 |
| Total Posts: 28847 |
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| 06 Oct 2015 09:57 PM |
why is the earth flat?
#code print("grenade lawnchair") -- Uias |
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| 06 Oct 2015 09:59 PM |
Well the sky is blue because the blue color of the sky is due to Rayleigh scattering. As light moves through the atmosphere, most of the longer wavelengths pass straight through. Little of the red, orange and yellow light is affected by the air.
However, much of the shorter wavelength light is absorbed by the gas molecules. The absorbed blue light is then radiated in different directions. It gets scattered all around the sky. Whichever direction you look, some of this scattered blue light reaches you. Since you see the blue light from everywhere overhead, the sky looks blue.
As you look closer to the horizon, the sky appears much paler in color. To reach you, the scattered blue light must pass through more air. Some of it gets scattered away again in other directions. Less blue light reaches your eyes. The color of the sky near the horizon appears paler or white.
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