Why Do Compressed Air Cans Get Cold?

Thanks to for supporting MinutePhysics - get 20% a premium subscription at Support MinutePhysics on Patreon! Link to Patreon Supporters: This video is about compressed air cans (aka gas dusters) and why they get cold when you spray them. They cool off because the refrigerant inside (1,1-difluoroethane) is under pressure and boils off when the pressure lowers,