Why is the sky Blue?

Answer 1

cuz the grass is green

Answer 2

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.)

Answer 3

Due to the refraction of light. Like a prism, when white light hits the atmosphere, the blue end of the spectrum is refracted down at a sharper angle than the other colors. Note how this refraction breaks down at sunset when the sun is very low in the sky.

Answer 4

Transmitted light (from the sun, light bulbs, fire, etc) is made up of a spectrum of colors. The longest wavelengths of light are on the red end of the spectrum and the shortest wavelengths are on the blue/violet end of the spectrum.

When transmitted light such as sunlight enters our atmosphere it collides with the oxygen and nitrogen atoms. The color with the shorter wavelength is scattered more by this collision. Because violet and blue are the shortest wavelengths the sky appears to be violet / blue. But because our eyes are more sensitive to blue light than they are violet light, we perceive the sky as blue.

Answer 5

The sky isn't blue. It's how human eyes perceive depth with the exact balance of air and sunlight. At night the same depth becomes dark or black. In reality the sky and space are rather colorless.

Answer 6

Rayleigh scattering (named after Lord Rayleigh) is the scattering of light, or other electromagnetic radiation, by particles much smaller than the wavelength of the light. It occurs when light travels in transparent solids and liquids, but is most prominently seen in gases. Rayleigh scattering of sunlight by the atmosphere is the main reason light from the sky is blue.

Answer 7

Why is it red during a sunset? Why does light pass through a window? Why does microwave energy pass through sand and bounce back from other objects?

The light that passes through our atmosphere and reaches your eyes passes through our atmosphere, which filters out the necessary portion of the light to make it appear blue to you.

Wave energy can hit something and bounce back, hit something and be disbursed, or hit something and pass through relatively unchanged, based on the wavelength of the energy and the size of the "something" being hit.

Answer 8

Nitrogen scatters the longer wavelength light reflected from the surface. At night the sky is black (no light to scatter).

Answer 9

It is the perfect colour that match every little thing on earth. And I think it will be very strange if the sky is green. Don't you think?

Answer 10

Oxygen. Ozone. Oxygen is a blue colored gas. Ozone is made of 3 oxygen molecules. Thus, you get blue. I'm about 70% sure with that answer, so don't quote me.

Answer 11

I'm not sure if this is what you mean but it is a very light blue- Names for colors is very diverse- it depends on your perception and commerciality- to me off white is off white but it could be eggshell, ecru, antique whte- etc.