Why is the sky blue and not blue & purple?

Question

Why is the sky blue and not blue & purple?

Answer 1

the blue is a reflection from the colour of the largest part of the earths surface ..blue oceans. viewed from space we are the blue planet. if we have been visited by extraterrestrials in the past it's likely they would have explored the oceans first and concluded that the top of the food chain indigenous lifeforms here were whales, dolphins, sharks and fish

Answer 2

Because of the Earth's atmosphere!

Answer 3

Very basically it is the effect of sunlight scattering through nitrogen molecules.

Answer 4

The sky should be blue and purple (violet). The scattering of the atmosphere does indeed cause both blue and violet light to behave in the same way. But:

1. Our eyes are not very sensitive to violet light

2. There is not as much violet in sunlight as there is blue.

The end result is that we don't see the violet and only see the blue.

Answer 5

  The earths atmosphere absorbs all light except the blue  section of the spectrum some times dust and pollution in the atmosphere can cause the sky to appear red,yellow or maybe purple.

Answer 6

Sunlight reaches Earth's atmosphere and is scattered in all directions by all the gases and particles in the air.

Blue light is scattered in all directions by the tiny molecules of air in Earth's atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.

When we get close to the horizon we see the sky fading to a lighter blue or white.

This is a physical phenomenon called Rayleigh scattering.Gas molecules in the atmosphere scatter the higher-energy (high frequency) blue portion of the sunlight more than they scatter the lower-energy red portion of the sunlight.

And hence, we see the sky as blue.

Answer 7

If you do a search of this site, you'll find out how many times this has been asked previously. Read all of them and pick an answer you like.

Answer 8

The atmosphere is a mix of gas molecules and other materials surrounding the earth which is mostly made of nitrogen (78%), and oxygen (21%). Argon gas and water (in the form of vapor, droplets and ice crystals) are the next most common things. There are also small amounts of other gases, plus many small solid particles, like dust, soot and ashes, pollen, and salt from the oceans. Light waves also play a major role in the color.

Answer 9

because the light of the sun gets polarized by the atmosphere.

u know there are 7 main colors composing the white light.

so when white light emitted from the sun colides with the mixture of gas molecules in the atmosphere, the wavelengths corresponding to the other 6 colors gets absorbed, but the wavelength which corresponds to the blue color passes the atmosphereic polarizer (air) and so the sky is seen as blue.