The Art Watches Service on Instagram: "The Remarkable Jeager Lecture Atmos Clock: Powered by Temperature Alone We discuss the Atmos clock, one of the greatest inventions in watchmaking history. It is powered by small changes in temperature, using an ethyl chloride-filled capsule that expands and contracts with the weather. This motion is connected to the clock’s mainspring, providing enough power for the clock to run for years without any need for battery or winding. The Atmos clock’s balance wh