Quote Originally Posted by thebigspendur View Post
Well, common sense says nothing is permanent and perpetual motion machines don't exist. It's not that you need energy to get it going, you need energy to keep it going.

To my knowledge the closest thing to an perpetual motion machine is an Atmos Clock. It runs on temperature changes in the room.
These are very effficient clocks run that just run on a different energy source.

But they still use energy.