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thermodynamic class
4. In the wintertime, it feels much colder outside when the wind is blowing than when it isnt. This is known as the wind-ch
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Wind chill is the effect of lowering of body temperature because of passing of low temperature air close to the body.

It can be understood in terms of heat transfer as the

rate of convection depends on both the difference in temperature between the surface and the fluid surrounding it and the velocity of that fluid with respect to the surface. As convection from a warm surface heats the air around it, an insulating boundary layer of warm air forms against the surface. Moving air disrupts this boundary layer, allowing for cooler air to replace the warm air against the surface. The faster the wind speed, the more readily the surface cools. This is the reason why our body feels cool in the winter when wind flows.

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