Essentially, your body cools you down by sweating, but if you reach a combination of sweat and heat above a certain degree, your body is unable to cool you down by sweating, as the air already has enough moisture and its hotter than your sweat.
Then you lose the ability to regulate your heat and you rapidly head towards a heat stroke.
It’s the temperature a thermometer will get to through evaporative cooling. You measure it by putting a wet cloth on the bulb of a thermometer and letting the water evaporate.
What is wet bulb? I’m from the dry Canadian prairies
Essentially, your body cools you down by sweating, but if you reach a combination of sweat and heat above a certain degree, your body is unable to cool you down by sweating, as the air already has enough moisture and its hotter than your sweat.
Then you lose the ability to regulate your heat and you rapidly head towards a heat stroke.
Ok I found this I think I get it https://en.m.wikipedia.org/wiki/Wet-bulb_temperature
It’s the temperature a thermometer will get to through evaporative cooling. You measure it by putting a wet cloth on the bulb of a thermometer and letting the water evaporate.
So this is a measure of how cool someone can get through perspiration?