What are the parts of a thermostat? How do bimetallic thermometers work? What is a mercury switch? In this episode, Chris and Jonathan break down the mechanics of thermostats. Tune in to learn what happens when you flip that mysterious switch on the wall.Learn more about advertising on the HowStuffWorks podcasts at www.howstuffworks.com/advertisers.htmAnd to learn about your ad choices when listening to podcasts, visit https://www.howstuffworks.com/privacy.htm#ad-choices
