Wet Bulb Temperature:
Wet bulb temperature is the lowest temperature to which air can be cooled by the evaporation of water into the air at a constant pressure.
WBT is a limit that considers heat and humidity beyond which humans cannot tolerate high temperatures.
A wet-bulb temperature of 31 degrees C is extremely dangerous for humans, while a value of 35 degrees C is unsurvivable for more than about six hours, even for fit and healthy adults resting in the shade.
The Wet Bulb temperature is the temperature of adiabatic saturation. This is the temperature indicated by a moistened thermometer bulb exposed to the air flow.
Wet Bulb temperature can be measured by using a thermometer with the bulb wrapped in wet muslin.
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