Unpopular facts - Page 3

Hyoi · 04-07-2007, 06:34 AM

Two ignorant Aussies enter, one ignorant Aussie leaves.

TheMercenary · 04-07-2007, 06:54 AM

The sky is not really blue.

duck_duck · 04-07-2007, 07:01 AM

Quote:

Originally Posted by TheMercenary

The sky is not really blue.

Then what color is it?

TheMercenary · 04-07-2007, 07:06 AM

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.

As you look closer to the horizon, the sky appears much paler in color. To reach you, the scattered blue light must pass through more air. Some of it gets scattered away again in other directions. Less blue light reaches your eyes. The color of the sky near the horizon appears paler or white.

On Earth, the sun appears yellow. If you were out in space, or on the moon, the sun would look white. In space, there is no atmosphere to scatter the sun's light. On Earth, some of the shorter wavelength light (the blues and violets) are removed from the direct rays of the sun by scattering. The remaining colors together appear yellow.

Also, out in space, the sky looks dark and black, instead of blue. This is because there is no atmosphere. There is no scattered light to reach your eyes.

As the sun begins to set, the light must travel farther through the atmosphere before it gets to you. More of the light is reflected and scattered. As less reaches you directly, the sun appears less bright. The color of the sun itself appears to change, first to orange and then to red. This is because even more of the short wavelength blues and greens are now scattered. Only the longer wavelengths are left in the direct beam that reaches your eyes.

The sky around the setting sun may take on many colors. The most spectacular shows occur when the air contains many small particles of dust or water. These particles reflect light in all directions. Then, as some of the light heads towards you, different amounts of the shorter wavelength colors are scattered out. You see the longer wavelengths, and the sky appears red, pink or orange.

duck_duck · 04-07-2007, 07:12 AM

Will different gas make different colors in the day?

TheMercenary · 04-07-2007, 07:14 AM

Quote:

Originally Posted by duck_duck

Will different gas make different colors in the day?

no, unless you count smog.

duck_duck · 04-07-2007, 07:19 AM

Quote:

Originally Posted by TheMercenary

no, unless you count smog.

I guess I meant to say on another planet with an atmosphere completely different then ours will the sky still look blue in the middle of the day?

TheMercenary · 04-07-2007, 07:28 AM

Quote:

Originally Posted by duck_duck

I guess I meant to say on another planet with an atmosphere completely different then ours will the sky still look blue in the middle of the day?

No, not unless it approximates the earths atmosphere of the gases nitrogen (78%), and oxygen (21%).

footfootfoot · 04-07-2007, 07:58 PM

Quote:

Originally Posted by lumberjim

unpopular fact: beer makes me fart

We have a winner. (possibly a few losers as well)

Aliantha · 04-07-2007, 09:06 PM

Quote:

Originally Posted by Hyoi

Two ignorant Aussies enter, one ignorant Aussie leaves.

What is this supposed to mean?

Kagen4o4 · 04-07-2007, 09:46 PM

Quote:

Originally Posted by Aliantha

What is this supposed to mean?

i was wondering the same thing

Aliantha · 04-07-2007, 09:47 PM

We may never know.

Sometimes ignorance is bliss.

lumberjim · 04-07-2007, 10:37 PM

Quote:

Originally Posted by TheMercenary

The sky is not really blue.

all colors are the result of reflection of light. saying the sky is not really blue is the same as saying that grass is not really green. we only call it blue because of the property that causes blue light to be perceived. therefore...it IS really blue.

duck_duck · 04-08-2007, 04:03 AM

Donald Duck comics were banned from Finland because he doesn't wear pants.

xoxoxoBruce · 04-08-2007, 04:05 AM

How is that unpopular?

04-07-2007, 06:34 AM	#31
Hyoi Faithful Companion Join Date: Mar 2007 Posts: 188	Two ignorant Aussies enter, one ignorant Aussie leaves. __________________ When you stop trying to make sense of it all, it all begins to make sense.

04-07-2007, 06:54 AM	#32
TheMercenary “Hypocrisy: prejudice with a halo” Join Date: Mar 2007 Location: Savannah, Georgia Posts: 21,393	The sky is not really blue. __________________ Anyone but the this most fuked up President in History in 2012!

04-07-2007, 07:06 AM	#34
TheMercenary “Hypocrisy: prejudice with a halo” Join Date: Mar 2007 Location: Savannah, Georgia Posts: 21,393	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. As you look closer to the horizon, the sky appears much paler in color. To reach you, the scattered blue light must pass through more air. Some of it gets scattered away again in other directions. Less blue light reaches your eyes. The color of the sky near the horizon appears paler or white. On Earth, the sun appears yellow. If you were out in space, or on the moon, the sun would look white. In space, there is no atmosphere to scatter the sun's light. On Earth, some of the shorter wavelength light (the blues and violets) are removed from the direct rays of the sun by scattering. The remaining colors together appear yellow. Also, out in space, the sky looks dark and black, instead of blue. This is because there is no atmosphere. There is no scattered light to reach your eyes. As the sun begins to set, the light must travel farther through the atmosphere before it gets to you. More of the light is reflected and scattered. As less reaches you directly, the sun appears less bright. The color of the sun itself appears to change, first to orange and then to red. This is because even more of the short wavelength blues and greens are now scattered. Only the longer wavelengths are left in the direct beam that reaches your eyes. The sky around the setting sun may take on many colors. The most spectacular shows occur when the air contains many small particles of dust or water. These particles reflect light in all directions. Then, as some of the light heads towards you, different amounts of the shorter wavelength colors are scattered out. You see the longer wavelengths, and the sky appears red, pink or orange. __________________ Anyone but the this most fuked up President in History in 2012!

04-07-2007, 09:47 PM	#42
Aliantha trying hard to be a better person Join Date: Jan 2006 Location: Brisbane, Australia Posts: 16,493	We may never know. Sometimes ignorance is bliss. __________________ Kind words are the music of the world. F. W. Faber

04-08-2007, 04:05 AM	#45
xoxoxoBruce The future is unwritten Join Date: Oct 2002 Posts: 71,105	How is that unpopular? __________________ The descent of man ~ Nixon, Friedman, Reagan, Trump.

04-07-2007, 07:12 AM	#35
duck_duck Soul Duck Join Date: Apr 2007 Location: over here Posts: 485	Will different gas make different colors in the day?

04-08-2007, 04:03 AM	#44
duck_duck Soul Duck Join Date: Apr 2007 Location: over here Posts: 485	Donald Duck comics were banned from Finland because he doesn't wear pants.

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