The Atmos clock is one of the closest inventions to pure perpetual motion.

Originally shared by Curt's Clocks (Atmos Repair Specialist)

The Atmos clock is one of the closest inventions to pure perpetual motion. The power is created by the elements of the room. A one degree temperature variation will cause enough expansion and contraction in the bellows to provide two days running time. The bellows contain a combination of liquid and gas. The reliability is perpetual, the pendulum continues to rotate on the mantle for decades.
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