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Adam Savage Reviews a "Perpetual Motion" Machine!
You can't hide the batteries when it's transparent!
Why don't perpetual motion machines ever work? - Netta Schramm
Adam Savage vs The "Perpetual Motion" Machine!
I Finally Discovered Perpetual Motion
The Controversial Perpetual Motion Machine We Set the Truth Straight
The Most Incredible Attempts at Perpetual Motion Machines
Impossible Perpetual Motion Could Become Reality
The Impossibility of Perpetual Motion Machines
Amazing Perpetual Motion Machines
More Bizarre Attempts at Perpetual Motion Machines
Why haven’t we found perpetual motion?
