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2006-08-16 22:00:10 · 26 answers · asked by Anonymous in Science & Mathematics Weather

26 answers

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.

:-D

2006-08-16 22:07:00 · answer #1 · answered by Anonymous · 1 0

When you look at the sky at night, it is black, with the stars and the moon forming points of light on that black background. So why is it that, during the day, the sky does not remain black with the sun acting as another point of light? Why does the daytime sky turn a bright blue and the stars disappear?

The first thing to recognize is that the sun is an extremely bright source of light -- much brighter than the moon. The second thing to recognize is that the atoms of nitrogen and oxygen in the atmosphere have an effect on the sunlight that passes through them.

There is a physical phenomenon called Rayleigh scattering that causes light to scatter when it passes through particles that have a diameter one-tenth that of the wavelength (color) of the light. Sunlight is made up of all different colors of light, but because of the elements in the atmosphere the color blue is scattered much more efficiently than the other colors.

So when you look at the sky on a clear day, you can see the sun as a bright disk. The blueness you see everywhere else is all of the atoms in the atmosphere scattering blue light toward you. (Because red light, yellow light, green light and the other colors aren't scattered nearly as well, you see the sky as blue.)

2006-08-17 10:17:31 · answer #2 · answered by j123 3 · 0 0

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.

2006-08-17 09:44:56 · answer #3 · answered by TIMEPASS 3 · 0 0

During daylight the sky has the appearance of an opaque blue surface, but this is the result of the air scattering sunlight. There is no "blue object" above the earth in any normal sense.

The color of the sky is a result of diffuse sky radiation and the fact that air is actually a very transparent blue color.

2006-08-17 05:06:02 · answer #4 · answered by Anonymous · 1 0

Coz Rayleigh scattering. When light passes through the atmosphere, all the colors scatter less than blue. So sky is blue in color. If red or any other color other than blue in VIBGYOR scatters more, then the sky would have that color.
Happy reading!

2006-08-17 05:40:04 · answer #5 · answered by rinky 3 · 0 0

When sunlight hits the atmosphere Rayleigh scattering occurs. Nitrogen is the most prominent element in the atmosphere and it's a blusih color. So that's what you see when you look up into the sky during the day.

2006-08-17 12:22:13 · answer #6 · answered by BoSox 3 · 0 0

I do think "the reflection of seawater cause the sky to blue."
OR
The unbounded objects of nature looks like blue.
OR
when the sunlight reacts with atmospheric moisture of water it seems us blue, & that's why sky is blue.

2006-08-17 05:29:44 · answer #7 · answered by Anonymous · 0 0

actually if we see the sky from moon it will appear black therefore the blue color is reflected more than other colors of spectrum.don't you remember any evening when the sky has turned orange or yellow.so you can't conclude that sky is always blue

2006-08-17 05:11:26 · answer #8 · answered by sahil 1 · 0 0

Sky is blue only in day time due to reflection of water (sea, ocean of earth) in the space (sky) due to sunlight, when there is no sunlight, there is no reflection thus in night sky has no colour (dark)

2006-08-17 05:07:57 · answer #9 · answered by Anonymous · 0 0

sky is bl;ue in colour because in the day the atmosphere reflects blue colour and all the other 6 colours are absorbed by the particles in sky

2006-08-17 05:08:40 · answer #10 · answered by Anonymous · 0 0

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