why ths sky is blue?

Answer 1

Because if it was green, we wouldn't know where to stop mowing.

Answer 2

The sky is blue because of the phenomenom called the Tyndall effect. This is the scattering of light as it passes through particles in suspension. Due to its short wavelength, the elements in the atmosphere happen to scatter blue more than other colors.

So, when the sun is shining down on the earth, most of the other wavelengths or colors travel in a relatively straight line. The sun appears white because it contains almost all the visible colors. The rest of the sky appears blue because we are seeing the blue light that has been scattered by the atmosphere.

Sunsets and the sun during dusk appear as red and orange because there is more atmosphere for the light to travel through and more blue is deflected. Red is one of the longer wavelengths so it is scattered the least, thereby making the sun and sky appear more red.

Answer 3

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 4

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. The wavelength of blue reflects off the atmosphere better than then rest and so we see the sky as mainly blue.

Answer 5

The white light from the sun is a mixture of all colours of the rainbow. This was demonstrated by Isaac Newton, who used a prism to separate the different colours and so form a spectrum. The colours of light are distinguished by their different wavelengths. The visible part of the spectrum ranges from red light with a wavelength of about 720 nm, to violet with a wavelength of about 380 nm, with orange, yellow, green, blue and indigo between. The three different types of colour receptors in the retina of the human eye respond most strongly to red, green and blue wavelengths, giving us our colour vision.

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 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. 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.

The white light from the sun is a mixture of all colours of the rainbow. This was demonstrated by Isaac Newton, who used a prism to separate the different colours and so form a spectrum. The colours of light are distinguished by their different wavelengths. The visible part of the spectrum ranges from red light with a wavelength of about 720 nm, to violet with a wavelength of about 380 nm, with orange, yellow, green, blue and indigo between. The three different types of colour receptors in the retina of the human eye respond most strongly to red, green and blue wavelengths, giving us our colour vision.

http://www.math.ucr.edu/home/baez/physics/General/BlueSky/blue_sky.html

Answer 7

Hello,
The sky is blue because of dispersion of light. Because of the earths atmosphere, when the sun rays enter, the atmosphere splits the light and since the wavelenght o blue light is less, so blue light gets split and the sky seems to be blue

Thanks

Answer 8

Ordinary lights are made up of seven colours.We see each of these colours only if they are reflected by something or split of in some other way.When sunlight hits Earth's atmosphere,blue light is scattered by the air and it appears that the sky is blue.

Answer 9

It is based on the phenomenon called SCATTERING OF LIGHT,
proposed by a scientist called RAYLEIGH JEAN.
according to this, the amount of light scattered is inversely proportional to fourth power of wavelength of the light.
the white light contains 7 colours ie VIBGYOR.
In the visible light spectrum, the shorter wavelength blue is scattered the most.
Hence the sky appears blue in colour.

Answer 10

due to the earth's atmosphere. when sun rays reflects back to outer space which when it is dark in an angle we see sky dark deep blue. and in th back ground sun light we see it as light blue we know it well as sky blue.

Answer 11

Because God is an artist of nature and he certainly has full knowledge of what is suitable and pleasing to the eyes of people, specially when one cannot ovoid seeing something like sky. so he choose the light and sober colour and made the world more beautiful. Even I don't want any other coloured sky.....do you want???