Genius arises in the most unlikely place!

Dr. Willis Carrier 1902, on a cold foggy train platform in Pittsburgh.  As Dr. Carrier stared through the dense mist, “If I can saturate air and control its temperature at saturation!

Dr. Carrier realized that he could drawing the Air through a fine spray of water to create actual Fog!

Less than one year, he had completed the world’s first spray-type Air Conditioning System. 

Modern Air conditioning had its fundamental building block.

參考資料：http://www.carrier.com/building-solutions/zh/tw/about/willis-carrier/