because it wouldn't look right any other color
2007-08-09 09:56:33
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answer #1
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answered by Anonymous
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Dust particles helps create the sky blue and the sunsets red. This is the result of the air scattering sunlight.
The sun's white light is actually made up of all the colours of the rainbow. Each colour has its own wavelength. Violet has the shortest wavelength, red has the longest wavelength.
At the sunset the sun is near the horizon. We see it then through a much thicker layer of dust and air. All these particles change the direction of more and more short wave light from the sun. Only the longer wavelenghts (red and orange) come through directly.
Violets, blues, and greens are scattered out of the direct beam; they mix and make a gray twilight glow all around the sky. The disk of the sun itself looks red. Sometimes there are clouds in the part of the sky where we see the sun. They reflect this red light and we see a blazing sunset.
Violet and blue light waves are scattered more than the longer red ones. The scattered violet and blue light bounces from particle to particle in the atmosphere, thus spreading light through the whole sky. Since our eyes see blue light more easily than violet, the sky looks blue to us. This, of course, is what happens during the day.
By the way, the redness of a sunset depends on the kind of the particles in the air that will be scattering the sun's light. Tiny water droplets are especially effective at this, which is why certain cloud formations appear so red at sunset.
2007-08-10 05:13:14
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answer #2
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answered by Ragnarok 2
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The sky appears blue because air scatters short-wavelength light in preference to longer wavelengths. When we look toward a part of the sky not near the sun, the blue color we see is blue light waves scattered down toward us from the white sunlight passing through the air overhead. Near sunrise and sunset, most of the light we see comes in nearly tangent to the Earth's surface, so that the light's path through the atmosphere is so long that much of the blue and even yellow light is scattered out, leaving the sun rays and the clouds it illuminates red.
Scattering and absorption are major causes of the attenuation of radiation by the atmosphere. Scattering varies as a function of the ratio of the particle diameter to the wavelength of the radiation. When this ratio is less than about one-tenth, Rayleigh scattering occurs in which the scattering coefficient varies inversely as the fourth power of the wavelength. At larger values of the ratio of particle diameter to wavelength, the scattering varies in a complex fashion described, for spherical particles, by the Mie theory; at a ratio of the order of 10, the laws of geometric optics begin to apply.
Some of the false beliefs of why the sky is blue are that the sky reflects off the ocean and that the light scatters off dust in the air. These two theories cannot be true, as the sky in Kansas has the same hue as the sky over the middle of the Pacific Ocean.
2007-08-09 16:51:40
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answer #3
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answered by Jo 3
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Why is the sky blue?
A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.
2007-08-09 16:51:03
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answer #4
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answered by Pink5ive 2
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No, the atmosphere is changing the light so that it appears blue up there. So that is why you see orange at sunset, because the sun has to travel through more of the atmosphere and at a different angle.
2007-08-09 16:55:57
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answer #5
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answered by Wolfithius 4
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this is the easiest way i can describe why the sky is blue.
the sun passes through a light prism at an angle. a prism of light has all the colors of the rainbow in it. so from where we are on the ground, the sky looks blue to us because of the angle. another example is when the sun sets. the sky is pink because the sun passes through the prism at a different angle.
2007-08-09 16:57:14
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answer #6
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answered by Arcadia 3
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My sky is not blue. There is a 2500 foot marine layer of low clouds here.
2007-08-09 16:51:54
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answer #7
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answered by William R 7
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It's the way particles in the atmosphere absorb and reflect light.
2007-08-09 16:50:01
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answer #8
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answered by Renegade 411 2
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Blue is the color of Roylity and because God is the King of Kings he always makes his presence known.
2007-08-09 18:04:50
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answer #9
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answered by Anonymous
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The only ones seeing blue is humans , I asked my dog and he said is saw gray .
2007-08-09 18:11:03
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answer #10
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answered by Anonymous
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Its not blue. Its invisible. Your seeing the suns rays
2007-08-09 16:49:42
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answer #11
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answered by scotslad60 4
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