An interesting dilemma. Really…I mean, the first thing I thought of when I read the title was, huh?
I mean, firstly, perpetual motion…suuuuure. For 10 seconds? that makes it semi-believable, until you realize thats a direct contradiction :P

But hey, its NIST. I mean, the scientists there think of new ways on how to make our definition of 1 second become even more exact. And I mean…MORE exact.
So, instead, they made perpetual motion, using bose einstein condensate. So, a long time ago I wrote up a little thing about what BSC actually is…well, too bad for you guys, I don’t feel like resurrecting the forums which have now become BOT TERRITORY. And therefore, let it suffice that it was made using BSC. The reason why it’s perpetual motion is because there is a total lack of friction. It’s at the lowest energy state, meaning there really CAN’T be energy loss.
Now, we gotta admit, right now, this is a totally useless thing. To maintain this toroid of BSC is energy consuming and essentially a power hole. However, since the liquid is moving indefinitely, this opens up the possibility of energy storage that is 100% conserved. There wouldn’t be a loss due to thermodynamics, unless you disrupt the BSC system. Who knows? This could become very useful later on.
Cheers!
Thanks Mark for finding the article, and thanks NIST scientsts :P