perpetual motion yes or no

[braden]

Could anyone explain how this works
Technologie | Perpetuum Mobile | secret.tv

[Jetijs]

Could anyone explain how this works
Technologie | Perpetuum Mobile | secret.tv

The rolling ball is an old trick. The two rails are connected to a electric current source and either one of the rails or the ball itself is made of lead. Lead has very poor heat transfer capability and therefor all the current that goes through the ball makes the surface touching the rails expand due to the heat. This makes the ball roll