do u know y the sky is blue ? lets see if u do!
2007-11-25 05:55:54 · 8 answers · asked by blaqkaudiorox 2 in Science & Mathematics ➔ Astronomy & Space
When Light enters the atmosphere it is slowed and bent towards the blue part of the visible light spectrum.
2007-11-25 06:39:28 · answer #1 · answered by gnatlord 4 · 0⤊ 1⤋
What? Eight answers so far and nobody yet has piped in with the perpetually wrong answer "Because it reflects the ocean?" Amazing! Maybe we ARE making progress.
As one or two people said before me, the sky is blue because of a phenomenon called Rayleigh scattering. When sunlight enters the atmosphere it is white, meaning it is made up of all the frequencies of visible light (often separated into the colors red, orange, yellow, green, blue, and violet). Red light has a lower frequency than violet light, and therefore less energy. Most of the low-energy frequencies pass directly through the atmosphere undisturbed, but blue and violet, the highest-energy frequencies, interact with oxygen molecules in the atmosphere. They get bent in all directions by their brief rendezvous, causing blue light to appear to come from all around us. Our eyes aren't as good at seeing violet as they are at seeing blue, so we readily detect the blue light coming in from all directions while missing most of the violet. Hence, a blue sky. QED.
Having explained all that, let me emphasize (once again) that this question has been answered many, many, many, many times already in Y!A. A simple search would have revealed the answer and saved you 5 points. But hey, if you learned something today, I guess that's good.
2007-11-25 16:24:11 · answer #2 · answered by Lucas C 7 · 0⤊ 0⤋
The blue daytime sky is an optical illusion that results from the intensity of the sun's light and the reflectivity of water vapor droplets and dust particles in the atmosphere.
The light of the sun is a broad spectrum that covers the entire range of frequencies from infra-red through red, orange, yellow, green, blue, indigo, violet, all the way to ultra-violet. As you go from the red end of the spectrum to the blue end, the wavelength of light grows shorter, and the amount of energy contained in the light rays increases.
Because the blue light contains more energy, it tends to be scattered and reflected throughout the atmosphere and downward toward the ground. Red, yellow, and green light are not reflected as much because they do not contain as much energy.
Because the blue light is scattered and reflected, the sky appears more or less blue to the human eye. Under atmospheric conditions besides clear and bright days, almost every color of the visible spectrum may appear.
For much more information, including pictures and diagrams, try an internet search on "spectrum of sunlight."
Good luck!
2007-11-25 14:12:33 · answer #3 · answered by aviophage 7 · 0⤊ 0⤋
Tell me why the stars do shine
Tell me why the ivy twines
Tell me why the shy is blue
And I'll tell you that I love you.
Nuclear fusion makes the stars to shine
Tropism makes the ivy twine
Rayleigh scattering makes the skies so blue
And testicular hormones mean I love you.
2007-11-25 15:28:15 · answer #4 · answered by Anonymous · 2⤊ 1⤋
Hi. Blue is the natural tint of nitrogen gas.
2007-11-25 14:04:37 · answer #5 · answered by Cirric 7 · 0⤊ 2⤋
Raleigh scattering.
2007-11-25 14:53:00 · answer #6 · answered by cosmo 7 · 1⤊ 1⤋
what that second chick said.
2007-11-25 14:58:56 · answer #7 · answered by michael n 1 · 0⤊ 2⤋
Um no idk!! Why is it blue??
2007-11-25 14:11:11 · answer #8 · answered by Linny J 3 · 0⤊ 3⤋