Is the sky blue and if it is, why?

Question

Not one single correct answer so far. Did anyone read what TOPIC this was filed under? Philosophy

According to Satre, the sky is blue only because man says it is. It is a random assignation of definition. In reality the sky is no more blue than grass is green.

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.

Answer 2

The sky is only blue because the sky reflects the color of the ocean which is blue. The only reason the sky is black at night is because the moon doesn't shine light on the water like the sun does. If the moon did shine light on to the water then at night we would have a blue sky 24/7. So if you want the truth the sky is nothing but gases floating around catching the color of the ocean as the sun shines light on to the water and the clouds are the only part of the sky that is truely visible to the human eye since the rest is just gases.

Answer 3

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


in other words, WORD!

Answer 4

To the people who said its blue b/c of the reflection off the oceans, I would have to disagree!

The ocean is blue b/c it reflects off the sky! I'll prove it. Take some water from the ocean and pour it out of the bucket, its more of a clear color than blue!!

Answer 5

Actually, I thought that the sky was every color except blue, that's why we see only blue. Something like that.
I watched a tv program about that.

Answer 6

Actually, its not blue. Its reflecting the color of the major portion of the earth's surface, the oceans. The color that it is reflecting, is not blue, its every color but blue. The color of something is never truly that color, instead it is missing that color and in missing it, reflects it when light touches it.

If you were wearing a blue shirt, it would technically be every color but blue. The other colors would absorb their component in the light and the blue wave-length would be reflected, making it appear that your shirt is blue.

Answer 7

Actually it's not blue....it's the colors of the earth that reflect too or on the sky that makes it blue...and blue is actually not blue.

Answer 8

yes because the blue visable light photons get scattered around the sky more than all other colors so therefore the sky apears blue....

Answer 9

the magnetic field around the earth cause the blue sky and the stars to twinkly

Answer 10

Water in the air refracts blue in the spectrum of colors.

Answer 11

Its blue because someone is sad out there. I had to say it the serious answers are taken. Yes its about wavelengths.