When you look at an object you see the light that is reflected off the object. When you look at a white object you are seeing the whole light spectrum,
(however the reason that white objects do absorb some heat is that they aren’t perfectly white and reflect most of the light but not all)
However black objects absorb all the light. So darker objects absorb more light thus heat up because both light and heat are forms of energy. So when the light enters your dark object the energy is transformed into heat.
2007-03-12 05:20:06
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answer #1
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answered by NASA 2
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Dark coloured objects absorb more energy from light than light objects - while light objects reflect more of the light back to our eyes. That's why we see them as dark and light. The absorbed energy raises the temperature, and so a dark object becomes warmer.
The type of solar panels which absorb sunlight to heat water are generally black as you would expect from the logic above - my neighbour has some, and the they match the slate roof.
However, the type of solar panels which convert sunlight to electricity generally look metallic (although they have a clear glass cover), because they are made of semiconductors (silicon or similar). The way they work is more complex than just absorbing heat.
2007-03-12 11:40:52
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answer #2
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answered by Lou B 3
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Dark colors absorb more light energy because less light is reflected back into the air.
Solar panels surfaces are clear to maximize the light gathering ability of the panel to eventually convert light into electricity. Can you imagine blocking the panel with very dark colors? It will defeat the purpose. The dark color veneer will get hot but the light will not reach the solar cell unit that actually makes the energy conversion.
However, the back sides of the panels maybe black.
2007-03-12 11:38:25
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answer #3
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answered by Aldo 5
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Dark colors absorb the heat energy while lighter colors tend to reflect it. The most absorbant color is black and the most reflective color is white.
Solar panels are generally very dark in color so they can absorb the maximum amount of heat energy in order to charge the solar cells that provide electricity.
2007-03-12 11:43:28
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answer #4
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answered by ModelFlyerChick 6
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b/c light colors reflect more light, so dark colors are absorbing more heat. Solar panels are black.
2007-03-12 11:35:45
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answer #5
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answered by Anonymous
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Because dark colours attract heat and light colours repel heat
2007-03-12 11:40:07
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answer #6
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answered by alexdaniel111111 1
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Dark colors absorb more light and RADIANT HEAT!
2007-03-12 12:07:27
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answer #7
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answered by Anonymous
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