Actually, rather than thinking of them as absorbers of heat, darker colors are
better absorbers of light and thereby become better radiators of heat.
Consider the following:
The color of an object depends on the wavelengths of colors reflected from the
object. A red apple is red because red wavelengths in white light are
reflected and other wavelengths are absorbed. In fact, if a red apple were to be
illuminated by light that had no red wavelengths, the apple would appear
almost black.
When a black object is illuminated by white light, all wavelengths are absorbed
and none are reflected -- that's why the object appears black. I learned this
the hard way one dark night when I tried to use my flashlight locate a Black
Angus steer that had escaped our pen. All I could see when I shined the light
on the steer were two glowing eyes.
Getting back to the point; when light is absorbed by a black object, the energy
carried by the light doesn't just disappear. Rather, it raises the energy of
the object doing the absorbing. The object, in turn, releases the absorbed
energy by emitting longer wavelength, lower energy infrared (heat). This
transformation of light into heat is the key to understanding the process
because it accounts for the law of conservation of energy. Light just doesn't
disappear when it strikes a black object -- it's transformed into another kind
of radiation that is either radiated from or retained within the black
object.
The darker the object, the better its emission of heat because it is a better
absorber of light.
2006-09-05 08:17:36
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answer #1
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answered by ĵōē¥ → đ 6
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The color of an object depends on the reflection and the absorbtion of light. How? Actually, the color of an object depends on three things, the light source, the object properties, and the human observer. All three are necessary for an object to have "color." As far as the object itself, it is the property of absorbing different amounts of the various wavelengths of light that impart color to the object. Whatever light is not absorbed is either reflected or transmitted and that is what we see.
Darker colors absorb it, and light reflects it. Hence, darker colors are hotter because they hold in the heat.
2006-09-05 08:23:52
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answer #2
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answered by LB 2
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It's quite a simple concept although you ask the question the wrong way. It's only a matter of definition (or rather a chicken-and-egg problem). WE perceive colors that absorb more light to be dark, and ones that don't absorb a lot of color to be light. It's not the other way around. If black reflected all incoming light (opposite to what it does), it would be considered a light color. I hope you get the idea.
2006-09-05 08:21:38
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answer #3
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answered by Anonymous
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Darker objects absorb more light.
Colors are not "light and dark," lightness and darkness are independent of color.
Example: a candy apple red ball look "lighter" in bright light or darker (even black) in low light.
If I have candy apple red paint and add black paint to it I get "dark candy apple red." The black (probably carbon) absorbs light and gives the sense of a "darker" color.
If I add white paint (probably titanium dioxide) the color appears lighter "light candy apple red" and it is the white that reflects more light.
But when you ask "How come" it's a bit like asking why is water that is boiling so hot. Things that reflect a lot are lighter because they reflect a lot of light.
2006-09-05 08:26:52
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answer #4
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answered by bubsir 4
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The visible colour of any object represents the various wavelengths of light that the object doesn't need, so if an object appears red for example, it is absorbing the green, blue and other wavelengths. Darker objects require more of the light spectrum, and therefore allow less of the spectral wavelengths to escape from them
True black is the absence of light.
2006-09-07 04:38:50
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answer #5
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answered by Anonymous
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Light is composed of colors and to "see" the color all the light is absorbed or reflected at the wavelength of the color involved. White reflects almost all wave Lengths so little light energy is absorbed. Black absorbes almost all the wavelength energy of light therefore it becomes warmer.
2006-09-05 08:25:18
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answer #6
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answered by gary o 7
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Some colors in the spectrum absorb more light, others reflect more...
It's not so much dark colors absorb more and light colors reflect more...
It's more that the colors that absorb light look dark and those that reflect light look lighter...
2006-09-05 08:21:21
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answer #7
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answered by Andy FF1,2,CrTr,4,5,6,7,8,9,10 5
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Because they do not reflect light like lighter colors do. If you expect to be outside in the hot sun all day, wear lighter-colored clothing because it will keep you cooler and it will reflect the sunlight away from your body.
2006-09-05 08:29:36
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answer #8
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answered by chrstnwrtr 7
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Colors do not do anything to the light, because they are the light; objects do not have any color to them.
The colors depend of the amount of light or the frequency of it, shined off against the object; lots of factors determine this, such as the texture of the object, the amount of resistance to the light that the object has, etc.
2006-09-06 11:45:54
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answer #9
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answered by Peter R 2
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High Performance Tactical Flashlight : http://FlashLight.uzaev.com/?IPAA
2016-07-11 01:58:31
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answer #10
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answered by ? 3
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