What is Wet-Bulb Temperature and how does it work?
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Wet-Bulb isn’t just a temp, it is a humidity ratio of 100%. Relative humidity is the amount of water in the air compared to the amount of water that air can physically hold. Your body generates heat through metabolism and the surrounding air evaporates it away. When the surrounding air matches your body temp the only thing that makes it keep evaporating is the dryness of the air. A relative humidity of 100% means there is already as much moisture in the air that it can hold. This prevents evaporation so you overheat and go into heat exhaustion and then heatstroke.
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