what is the chemistry behind the sky looks blue...?

Question

why sunlight is yellowish and sky is blue. if we want to see the sky from moon what will be its colour.

Answer 1

u must ask the physics behind why sky is blue...
its called tindall affect and its due to scattering of light rays
when the light rays hit the nitrogen molecules as they are abundant in earths atmosphere.. the light rays are scattered and the size of the nitrogen molecules is equal to the wavelength of blue colour and as u know light consists of blue colour along with others
so the blue colour is scattered
from moon .. its transparent... that means we can see the ground
sun appears in a avariety of colours like deep orange in the moring and light red during the sunset and yellow during noon.
sun looks yellow but actually produces white light
http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/opt/air/sun.rxml

Answer 2

Simple answer for a blue sky: Rayleigh scattering.

Sunlight is yellow because the distribution of colors of light, and our sensitivity of our eyes to colors, work together such that we see yellow light more intensely than all other colors.

From the Moon, the Earth sky is still blue. Rayleigh scattering of sunlight is still occurring. The fact that the light has to travel farther to reach your eyes matters not (at least not in the distance from the Earth to the Moon).

By the way, nitrogen molecules cannot be the same size as the wavelength of blue light. Blue light has a wavelength of 400 nm. If a molecule was 400 nm is size, you would be able to see it with a microscope (a plain, old, ordinary optical microscope in any high school biology lab)! Nitrogen molecules are only a couple of angstroms in length, which is considerably less than even 1 nanometer.

Answer 3

The blue sky is a physical rather than chemical phenomenon. Light of all wavelengths is scattered by the atmosphere, but the scattering is strongest at short wavelengths. Recall that the frequency of light is f = c/wavelength. Rayleigh (sometimes called Tyndall) scattering is proportional to f^4. Because blue wavelengths suffer more scattering, more blue wavelength photons are scattered toward an observer on the ground than red or green wavelength photons. While UV has a shorter wavelength than blue and is scattered more, the atmospeheric absorption for UV is also higher so not much is scattered to an observer on the ground. The sky could in the future look more violet if humans manage to destroy the ozone layer and hence reduce absorption of UV wavelengths.

Answer 4

its no chemistry but physics.. the light which comes from sun id white light made of seven colours..each having different wavelength and frequency.. blue light disperses the most in the sky and red doesnt ( due its wavelength) thats y the sky appears blue not red..
as far as ur second question is considered, i think the sky dat is to say atmosphere from moon is not visible..hw cn it b?? ...from moon u nly c the clouds n th eland formation. hw cn u c the sky from moon??

Answer 5

sunlight refraction through water vapor in the atmosphere, the moon reflects subdued sunlight so the night looks black, but with a slightly purple tinge (bluish) blue is the reflective frequency of water molecules.

Answer 6

oxygen is blue. if you ever get the chance to see liquid oxygen i would highly reccomend it. that is condensed oxygen. 1 cubic foot of liquid oxygen (LOX) is equal to 88 feet of air. it is very cold though (300 degrees F below zero). but it is the exact color of the sky.
but at night you cannot see ithe blue sky because we need light to see colors.

Answer 7

It s more a physical process called Rayleigh diffusion rather than a chemical problem....

Answer 8

ozono is the answer