How many meteorologists does it take to change a wet bulb?

While I was watching the Olympics, I was surprised to see one of the sports reporters referring to the "web bulb" temperature during the women's marathon. While I thought it was pretty cool, I'm sure a lot of people were thinking, what the heck is wet bulb temperature. Today I break down what it means and why it can seem confusing.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.