Willis Haviland Carrier
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Willis Haviland Carrier invented air conditioning. Through his study of temperature and humiditiy , the first air conditioner was created. He developed an equation on how they are related.
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Carrier studied people. He wanted to figure out what temperatures made people comfortable. Later he invented ways to control both the temperature and humidity.
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Air-conditioning was first used in factories that needed it. Next, theatres began to have air-conditioning. Now most people have it in their homes!
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