It doesn't.
Sunlight falls on everything it can hit, unless it's blocked by something. The only difference is geometrical issues such as orientation to teh path of the light mattes, so that if it's at 90 degrees to the sunlight more will fall on the surface than if it were, say, at 15 degrees to the sunlight. But, that's true for any surface, not only a black one.
What is true about black surfaces is that they are much more absorbent. Some surfaces reflect light much more than others, and the difference roughtly correlates with color to our eyes. White surfaces reflect better, black surfaces absorb better.
for that matter most rough surfaces absorb better and shiny polished surfaces absorb less.
So, overall, a black surface will get warmer than a white surface, all other things being equal, which of course they rarely are.
==
In the hisrory of physics, it was the "black body" problem (an idealized perfect absorber) which led to the realization that all radiation is quantized (ie, not continuous) and shortly thereafter to the invention of quantum mechanics as a theory which predicted -- extremely successfully as it happened -- subatomic phenomena.
Extremely fascinating stuff, actually. Even though it's rather mindbending stuff, for behavior inthe quantum realm is very mcuh diffeetn thatn the behavior we have learned to expect from things in our world of large things, like baseballs and hockey pucks.
2006-07-08 19:35:31
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answer #1
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answered by ww_je 4
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Pal it does't attract the sun but any way I get your point clearly if you were trying to say "why does the colour black absorb more sunlight and energy than the other colours? then I got the answer for you
When we say the rose is red we say this as we see the rose as red because the red rose reflect only the red light of the sun and it absorbs all the other colours of light similarly we see all the different corours but in case of the colour black it absorbs all the colours of light so there is no colour to reflect therefore it is black. And since all the light is absorbed by the black colour we can say it absorbs more light and heat than other colours this is also th reason why a black tin gets hottter than a well polished shiny tin when kept in the sun.
2006-07-09 07:01:10
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answer #2
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answered by Anonymous
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ok, I understand this but I need a min to correlate my thoughts, it's 2 AM...
it has to do with the fact that light coming from the sun is white, meaning that all the colors of light are present, thereby creating white.
However black is not a color of light, and the colors of clothing are only visible to the eye because, for instance, green light reflects off green clothing while all other colors of light are absorbed, since there's no black light ALL the light is absorbed into the fabric or other material causing its molecules to be more highly energized than they would if it was any other color of material.
And by the way, white reflects the sun for the same reason, it reflects all the colors of light.
PS. neat little tidbit, if you were to shine red light on a blue shirt, know what color you'd see? black
2006-07-09 02:55:39
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answer #3
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answered by Archangel 4
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Simply put, black is either the absense of color (as with the lights off) or the presence of every visable color (such as the color black).
Here, we are talking about the presence of every visable color. Now, a basic lesson on color:
Color is the part of a beam of light which was NOT absorbed, but IS reflected. For instance, White reflects every color, black "absorbs" every color. When speaking of a light SOURCE, White light CONTAINS every color, black light contains NO color. So, you see something Yellow in color. That means it is either the light source, or it is absorbing blue, reflecting only red and green.
Now, since we now know that the color black absorbs all the light (none is reflected,) we then look to the by-product of our source of light; heat. The heating/cooling effect of white/black absorbing/reflecting light/heat make that little rotor spin inside that glass bulb.
It has also been proven that photons (light particles) do actually have a measurable mass, and could theoretically be used to propel such a device.
So, to recap: your black car gets hotter in the sun than a white car because black absorbs more light/heat than white does. Want proof-positive? Buy a white cooking pan and a black cooking pan. Bake a cake for the exact same ammount of time, and the black pan will have burned the crust of the cake moreso than the white, due to its ability to absorb infared heat more efficiently.
2006-07-09 02:43:20
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answer #4
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answered by BeLiaL = 2
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It does too make sense. Why does the color black attract the sun? I think it's a very good question. I wish I knew the answer!
2006-07-09 02:20:08
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answer #5
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answered by Anonymous
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If you're talking physics, black reflects the least light, therefor holds in the most heat (energy). A black car gets much hotter in the sun than a white one.
2006-07-09 02:22:14
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answer #6
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answered by Anonymous
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Black doesn't attract the sun, it simply absorbs all the colors of the electromagnetic spectrum and reflects none. White reflects all and absorbs none. Green absorbs all colors except green, which it reflects, etc.
2006-07-09 02:23:52
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answer #7
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answered by brad l 2
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This is the way it is.I can't believe a biology teacher doesn't know.
Black is the combination of all colors in the spectrum. Therefore it absorbs all light. White is the absence of all colors in the spectrum. It reflects all light. The primary colors of the spectrum are red, yellow and blue. These colors are made from some absorption and some reflection. All other colors are made up of combinations of the primary colors. The absorption of all light naturally absorbs heat as well.
2006-07-09 02:36:54
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answer #8
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answered by oldman 7
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So black is absorbing all the rays of light and not reflecting anything back. White reflects every wavelength of light back. Which is why black cars heat up faster than white ones.
2006-07-09 02:20:14
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answer #9
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answered by alwaysmoose 7
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because black is a combination of no colors of the rainbow, which is what light is basically. white is a combination of all colors, the reason you see colors is because that color from the rainbow or a combination of colors are reflecting off of it, so white reflects light better because all the colors put together are reflecting off at the same time, black however, absorbs all the colors because it reflects none, this is why plants do not grow in green light because they do not absorb it because their color is green.
2006-07-09 02:23:44
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answer #10
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answered by nunya_business42 1
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