White Black
Monday, December 14th, 2009
Why did people evolve to have white/black skin?
I learned that black is the color black because it absorbs all light and reflects none, and white is the color white because it reflects all sun and absorbs none, hence why arabs wear white clothes in the desert. So why is it that people in africa evolved to have black skin and not white? And why do europeans have lighter skin when there is less sun, wouldn’t darker skin allow them to absorb more sun for the vitamin d they need? What is wrong with this theory?
Two things to think about, to make this make sense to you.
Ever had a sunburn? Like a lot of good things, our bodies can take in too much sunlight energy, and then it’s a bad thing. Sunlight IS energy, just like the heat coming off a fire is energy. If the fire gets too big, it can burn you and cause damage to your body, right? Well, humans can’t adjust how big the sun gets, so we evolved to adjust ourselves.
The colors black and white are not the same as the races black and white (which are not absolutes, either, but that’s another conversation.) The words you’re looking for are “transparent” and “opaque.”
People who are called “white” have skin that is more transparent, allowing more sunlight energy to pass through into the cells beneath, because we need some of that energy for processes in our bodies. People who are called “black” have more opaque skin (more melanin) so that they can prevent too much sunlight energy from passing through their skin and damaging their cells.
There’s a much more technical way of explaining nutrient processing and solar radiation, but think about it like this and you’ll get the idea. The complex part of the human body is inside its skin in the same way you could stand inside your house. If you were cold, you’d go stand in front ot a transparent window to let the sun come through and warm you. If you were hot, you would go stand in front of an opaque wall, so the sun wasn’t hitting you directly, right?
The transparent window lets the energy in. The opaque wall stops the energy at the outside of the house. The most transparent-skinned white people developed where there was less intense sunlight, to let as much of it in as possible. The most opaque-skinned black people developed where there was more intense sunlight, to stop too much of it from getting in.
Hope this helps.
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Salomon Maori Snowboard Boots Black/White Mens Sz 12 $119.95 |
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EMO PUNK LIBRARIAN BLACK & WHITE LACE CORSET SUNGLASSES $9.99 |
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Vans Matlock Snowboard Boots Black/White Mens Sz 13 $139.95 |
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Vans Matlock Snowboard Boots Black/White Mens Sz 11 $139.95 |
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FUR TRAPPER BOMBER TROOPER SKI HAT CAP BLACK WHITE Z $7.99 |
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Mens M,medium WHITE FIR ski jacket,coat,black,green $14.00 |
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Never Summer Snowboards stickers (black,white or red) $3.75 |
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DC snowboard boots GRAPHIX BOA mens WHITE/BLACK 7.5 $104.99 |
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MENS CCM TACKS 652 SUPER ICE SKATES, Sz 8,BLACK & WHITE $20.00 |
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Technine Mens Enforcer Snowboard Size 155.5 Black/White $260.00 |
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Technine Mens Enforcer Snowboard Size 152.5 Black/White $260.00 |
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Technine Mens Enforcer Snowboard Size 152.5 Black/White $260.00 |
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Technine Mens Enforcer Snowboard Size 149.5 Black/White $260.00 |
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Atomic Race Backpack Red-White-Black 2008 NEW $0.95 |
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Burton Moto 08 Mens Snowboard boots size 10.5 blk/white $20.00 |
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SPYDER SPY AVENGER Snowboard Ski Jacket Men White Blk L $199.00 |
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Burton Moto 2009 Snowboard Boots Black White 6 $83.99 |
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vans snowboarding hi standard 02 black red white men 8 $40.00 |
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