how does wind-chill work?

Question

and how does wind feel cold when its just little particle things?

Answer 1

evaporation increases under windy conditions (you can try it with wet laundry), to evaporate (change from liquid to gas) water requires a large amount of energy, so when we are in wind we lose more water from our skin (sweat) and with it we lose body heat and feel cold.

Answer 2

When the air is cooler than an object, wind can help equalize the temperatures quickly. For example when you park your car in winter weather the engine will cool faster if a strong cold wind is blowing away the heat as soon as it is lost from the hot engine block. If the air is still, heat remains longer under the hood to help keep the engine warm. In like manner, in still cold air, you can lose heat from your face but are surrounded by a thin layer (boundary layer) of warm air. A strong cold wind can blow the heat away giving you a chill. Although the cold air of the wind can not reduce the temperature of your face to below the air temperature, it feels as though it is colder because heat is being removed more rapidly. Below zero weather feels cold but your face can keep up with the heat loss (skin reddens as blood capillaries near the surface deliver more heat) but in a strong cold wind the face can not keep up and there is the risk that the skin will suffer frostbite. When a cold particle bounces off a warm particle, they average out their heat energy. If the cold particle is air (in the wind) and the warm particle is part of your face, your face cools down by giving up heat. Billions of cold particles bounce off your face per second and are quickly blown away in a cold wind.

Answer 3

Wind chill is the apparent temperature felt on exposed skin due to the combination of air temperature and wind speed. Except at higher temperatures, where wind chill is considered less important, the wind chill temperature (often incorrectly called the "wind chill factor") is always lower than the air temperature, because any wind increases the rate at which moisture evaporates from the skin and carries heat away from the body. The phase change of water (in sweat) from liquid to vapor requires that the molecules reach a higher energy state. That energy is acquired by absorbing heat from surrounding tissue by conduction.

Answer 4

Simple... Its the wind that blows your body heat away from you which in return makes you cold cuz of the lack of body heat surrounding you.

Answer 5

The wind makes it colder, hence the name.

Answer 6

go to this link and it will have a complete chart, up-to-date, from the National Weather Service. http://www.weather.gov/om/windchill/