How does air within winter clothing keep you warm on cold winter days?
ummm... your body gives off heat and warm up the air and the warm air just circulate around your body inside your cloth to keep you warm?
Air does not conduct heat very well. For that reason your body heat does not pass through the air in your clothes very fast and you stay warm.
However, to work the air has to be still. If it is allowed to move it will convect (as opposed to conduct) the heat away quickly. Therefore clothes not only have to hold a lot of air to keep you warm, but the air has to be prevented from moving around much.
cause the air comes in thermal equlibrium with your body... and it depends upon the heat that your body looses...i guess so.
The air trapped within winter clothing helps keep you warm on cold winter days through a process called insulation. When it's cold, we experience heat loss from our bodies to the surrounding environment. Insulation works by creating a barrier that slows down this heat transfer.
Air itself is a poor conductor of heat, meaning it doesn't transfer heat easily. Winter clothing, such as jackets or coats, is made of materials that can trap air within their fibers or layers. When you wear winter clothing, it creates pockets of air between the material and your body.
These trapped pockets of air act as a barrier, reducing heat transfer from your body to the colder outside environment. The air pockets help to prevent warm air generated by your body from escaping, while also preventing the cold outside air from reaching your body.
In addition to the insulation provided by the air, winter clothing materials are often designed to be water-resistant or waterproof. This helps prevent moisture, such as sweat or snow, from accumulating and cooling your body.
Overall, the air trapped within winter clothing acts as an insulating layer, reducing heat loss and keeping you warm on cold winter days.