2nd October 2019


Do black clothes keep you cool?

When all that body heat hits the white clothing covering it, it gets reflected right back towards the body. When we wear white, we cook ourselves. The best color to keep cool in the heat, it turns out, is to wear black. But black also absorbs energy from the body instead of reflecting it back.

So, why do you get hotter when you wear black?

The darker the object, the better it emits heat, because it's a better absorber of light. On the other hand, a white object appears white because it reflects all the different wavelengths and absorbs little to no light. It doesn't absorb much energy, then, and puts off little to no heat.

Do loose or tight clothes keep you warmer?

Tight clothing, contrary to popular belief, does not keep you warmer. Tight clothing actually inhibits circulation so the body does not warm itself as effi- ciently. In addition, there is less chance for warm air to be trapped in the clothing for insulation.

How does black attract heat?

Light energy can be converted into heat energy. A black object absorbs all wavelengths of light and converts them into heat, so the object gets warm. A white object reflects all wavelengths of light, so the light is not converted into heat and the temperature of the object does not increase noticeably.
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