Searl Effect generator (SEG) is a system invented by Prof. John Searl in 1945, it was intended to generate electricity by initially applying external power supply to operate magnetic strips of rotors, during the first tests, the uncontrollable rotation of the SEG reached a state where it uplifted from the ground, disconnected from the initiated power source and flay disappearing upward into the space. The device tested is mockup, it doesn't rotate on its very own. Nevertheless the cooling of stator can be observed, once generator gains sufficient rotation. See also:
- Does vacuum "remember" magnet rotation? Demonstration of Aspsden effect.
- You can find more info about Searl generator for example here, compare also Otis T. Carr's machine.