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Why do we feel comfortable under a fan when we are perspiring?

Posted by Mitesh Sharma 3 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Sia ? 3 years, 2 months ago

The evaporation of the sweat is actually what cools you. The changefrom a liquid to a gas requires heat energy and it gets part ofthat heat energy from the skin, making the body feel cooler. Perspiration takes excess heat from your body and releases it tothe surface in moisture. A secondary mechanism continues to coolthe body as the moisture evaporates from the surface of the skin.Cooling occurs in all types of climates but the evaporationmechanism works best in areas with low humidity because it exchangeis more rapid.

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