When I’m at the beach and the water is around 23-25°C, it feels like touching ice but when air temperature ist around there, sometimes even topless it’s hot, even in the shadow. Or even if it’s cool, it doesn’t feel that cold
In: 6
Density. Water has a lot more molecules in contact with your skin to carry away heat. Air has very few. As a result, the heat transfer is much slower in air than water.
This is why you can reach into an oven at 212/100 degrees and think it’s just very warm while putting your hand in boiling water would be, well, putting your hand in boiling water.
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