The Wet Bulb has a Faulty Switch

https://www.youtube.com/live/HQkB8w2mybo?feature=share. A Wet bulb measures the temperature read by a thermometer covered in a wet cloth. As water evaporates from the cloth, evaporation cools the thermometer. This mirrors how the human body cools itself with sweat. I realized there are a lot of folks that do not have a clue what this is!!!!