if we have same tempature water and air, why does the water feel colder to the air when we go for a swim for example?
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The cold feeling is the water taking your heat away with every interaction the molecules in the water have with your body. The air is a lot less dense and the molecules have a lot less interaction with your body than being submerged in a fluid like water. That’s why it is also colder at the top of mount Everest than at see level, less air molecules per unit of volume at that altitude.
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