Wind Chill!!!

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Hook
The temperature of the air is not always a good indicator of how cold you might feel when you are outdoors. The amount of sunshine, the humidity and the wind all have an affect on how cold you might feel. In 1939, the term "wind chill" was coined by Paul Siple to describe the degree of discomfort caused by a combination of wind and temperature. Siple refined his experiments at Little America, Antarctica to develop the current formula used for the determination of wind chill. The wind chill index is based on a skin temperature of 33 C (91.4 F)and represents how cold the air feels to the skin. The wind chill index only applies to human skin, not other materials. In the experiments at Little America, Siple and Charles Passel did not use human skin but rather measured how long it would take to freeze a known mass of water at different combinations of wind and temperature.

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