Why is the sky blue?

Answer 1

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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.

Answer 2

The sky is blue because of a phenomenon called scattering of light. Scattering is the process by which particles of different wavelengths behave differently in a medium of a different index. The sky appears blue partly because air prefers scattering light of a shorter wavelength than that of a longer wavelength. When the sunlight is tangent to the earth's surface,the light's path through the atmosphere is so long that only blue and green light is scattered. This is also the reason why the sun appears red during dawn and dusk. In this case,red light bends the least and so it enters our eye undeflected. It is viceversa in the case of the sky being blue. Another important reason for the sky appearing blue is the abundance of blue light in the visible light spectrum. Hence, although violet light is refracted and scattered the most, the sky appears blue.

Answer 3

The sky is blue, because sunlight is diffused in the atmosphere. Blue light has has a shorter optical path length (around 49 km/30.6 miles) than red light (around 180 km/112.5 miles). Therefore, the diffusion process of blue light is more efficient. On the other hand, sunrise and sunset are red because light has to cover a longer distance through high-density areas within the atmosphere. Blue light is substantially diffused, so the sky turns red.

Answer 4

When the sunlight travels through the atmosphere, the blue light scatters more than the other colours leaving a dominant orange-yellow hue to the transmitted light. The scattered light makes the sky blue; the transmitted light makes the sunset reddish orange.
Ref:www.exploratorium.edu/snacks/blue_sky
VR

Answer 5

Raman effect makes ocean blue.Sky also probably looks blue for similar reasons.Sir C.V.Raman Indian Nobel laureate in physics explained that when white light impinges on water several layers of ocean having different physical and chemical properties filter the light at various strata changing the wave length of light and so ocean appears blue or green. Similarly light fron sun gets filtered at various layers in sky and sky appears blue. I do not know if this is also called Raman effect.

Answer 6

"The sky is blue partly because air scatters short-wavelength light in preference to longer wavelengths. Where the sunlight is nearly tangent to the Earth's surface, the light's path through the atmosphere is so long that much of the blue and even yellow light is scattered out, leaving the sun rays and the clouds it illuminates red, at sunrise and sunset."

Answer 7

the blue coloration of the sky is by technique of Rayleigh scattering. As gentle strikes in the time of the ambience, lots of the longer wavelengths pass without delay via. Little of the pink, orange and yellow gentle is suffering from the air. although, lots of the shorter wavelength gentle is absorbed via the gas molecules. The absorbed blue gentle is then radiated in distinctive guidelines. It gets scattered everywhere in the sky. Whichever direction you seem, a number of this scattered blue gentle reaches you. because of fact which you notice the blue gentle from everywhere overhead, the sky seems blue.

Answer 8

Basically when light is transmitted through the atmoshpere. It going to meet up with nitrogen and oxygen atoms. The shorter wavelengths color scatters more by this collision. Violet and blue happen to be the shortest wavelength. Our eyes are really sensitive to blue as compared to violet. This is why we see a blue sky but really it's blue and violet.

Answer 9

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 10

Off the top of my head I'm going to go by how light is refracted from the sun. And the many different components of matter in our atmosphere. This should also VAGUELY explain the shape of shadows in the morning and evening and the difference in color of the morning and evening skies.