why is the sky blue?

Answer 1

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Answer 2

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.

Answer 3

The first steps towards correctly explaining the colour of the sky were taken by John Tyndall in 1859. He discovered that when light passes through a clear fluid holding small particles in suspension, the shorter blue wavelengths are scattered more strongly than the red. This can be demonstrated by shining a beam of white light through a tank of water with a little milk or soap mixed in. From the side, the beam can be seen by the blue light it scatters; but the light seen directly from the end is reddened after it has passed through the tank. The scattered light can also be shown to be polarised using a filter of polarised light, just as the sky appears a deeper blue through polaroid sun glasses.

This is most correctly called the Tyndall effect, but it is more commonly known to physicists as Rayleigh scattering--after Lord Rayleigh, who studied it in more detail a few years later. He showed that the amount of light scattered is inversely proportional to the fourth power of wavelength for sufficiently small particles. It follows that blue light is scattered more than red light by a factor of (700/400)4 ~= 10.

Answer 4

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.

Answer 5

The light we have here on Earth comes from the Sun. Sunlight looks white, but is actually a mixt ure of all of the colors of the rainbow. When sunlight strikes air particles (which are very small), the light itself is scattered in all directions, forward, sideways, and backwards.
Air molecules scatter some colors of light better than others. Blue light is scattered the most and red light is scattered the least. In fact, blue light is scattered at least 10 times more than red light. Since the blue rays of lights are scattered th e most, they reach our eyes from all directions and we see more blue than any other color. This makes the sky look blue.

Answer 6

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.

Answer 7

All color is the result of various wavelengths of light hitting our eyes. The longer wavelengths make a different color than the shorter, which explains why the sky is blue and then red. Different wavelengths. Different result.

Answer 8

THE SKY APPEARS TO BE BLUE BECAUSE CERTAIN MOLECULES IN THE AIR SCATTER BLUE LIGHT FROM THE SUN MOARE THAN THEY DO RED. WHEN WE LOOK TOWARDS THE SUN AT SUNSET WE ACTUALLY SEE RED BECAUSE THE BLUE LIGHT HAS BEEN SCATTERED AWAY FRROM OUR SIGHT RANGE OR LINE OF SIGHT.

Answer 9

I know why the sky is blue, why is your ********** red?

Answer 10

the same reason the grass is green and the sun yellow, and if you mix the sun with grass you get a sky......