Why is the sky blue when the outer space is black?

Question

my friend has always wondered

Answer 1

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.

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Hope this helps ya!

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Answer 2

The moisture and debris contained in the ambience play a huge function in that - air, water, particulates, which reason the solar's basic to be pondered and scatter - that scattered basic has the colors of the rainbow in it - the finished colour spectrum, pink, orange, yellow, eco-friendly, blue. Now the colors of sunshine have a wavelength - pink basic has the longest wavelength and blue basic has the shortest wavelength. and as the blue basic has shorter wavelength, that is extra reachable to scatter more advantageous than the different shades, so the blue will develop into the colour that we see. The sky colour adjustments throughout the day as well as with climatic circumstances and seasons relying on the position the solar is and how the basic is pondered, the blue would properly be deep royal blue, or a delicate infant blue, even a lush turquoise - those shades change because of ways a lot basic there is, the attitude of the solar, if there is the different colour being pondered. The darkish royal blue has some pink in it. And the turquoise colour has some eco-friendly. those shades in many cases happen later contained in the day at the same time as the solar is at an attitude, and that permits the longer wavelength basic to be protected. Now this would seem extraordinary as a evaluation, yet in case you imagine of spaghetti, once you're taking spaghetti out of the container, various the products are lengthy strands and in case you carry it, they are going to carry jointly - notwithstanding the smaller products will fall all round and consider to sparkling them up - that is how shorter length basic scatters.

Answer 3

The sky on Earth is blue due to a phenomenon called Rayleigh scattering. When light encounters particles much smaller than the wavelength of light, the light scatters. Atmospheric gas is an enormous resevoir of such particles. Short wavelengths scatter the most effectively, and blue has a short wavelength, so the blue light scatters and appears to fill the sky. Note that violet has a shorter wavelength than blue, but the human eye is not very good at seeing violet, so blue appears to dominate instead.

Outer space appears black because scattering does not occur. Light travels directly from its source, the sun and stars, to your eye. Without gas particles to scatter the light, there is no diffusion, and so the light doesn't fill the "sky" as it does on Earth.

Answer 4

The blue appearence of sky is due to scattering of sun light from the atmosphere .When u look at the sky ,it is the scattered light that enters the eyes.Among the shoter wave lenghts ,the colour blue is present in larger proportion in sunlight .Light of shoter wave lenghts ,r stronghly scattered by the air molecules & reach the observer .This explains the blue colour of the sky.Another natural phenomenon related to the scattering of light is the red appearence of sun at the sunset & sunrise.At these times ,the sunlight has to travel a larger distance through the atmosphere .The blue & neighbouring colors r scattered away in the path & the light reaching the observer is predominently red

Answer 5

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 6

the light is refracted through the atmosphere, making it appear to be blue (or red, or purple or pink, etc) depending on the angle of the light & the conditions of the atmosphere (clouds, dust, etc)