I want that shiz to run my phone,(reply>), +Name Well yeah, its a pendulum, it vibrates all on its own, you just need a little bit extra to counteract the losses from bending the thread etc. Someone probably pulled a vacuum on it to stop the annoying ringing, so no air resistance. You can't even run all that much power through that thing, the vibrating metal bit is the actual charge carrier, not a conductor - a carrier. It charges up at one bell, gets repelled hits the other bell gets charged down repelled rinse and repeat.,(reply>), Pretty much.,(reply>), +Murr<br>Does it really take that little energy to vibrate the rock?,(reply>), O,(reply>), And the fact your phone would drain it in less than a fraction of second, and after that completely destroy the internals of the thing the minute it runs out.