Quote Originally Posted by Xianti
Quote Originally Posted by EricE
Yeah, perpetual motion doesn’t imply you have to create energy, just that you take energy from something that doesn’t matter. Like temperature from the ambient air or wave motion.
Actually, no.

http://en.wikipedia.org/wiki/Perpetual_motion_machine

Perpetual motion refers to a condition in which an object moves forever without the expenditure of any limited internal or external source of energy.
eh whatever. By that definition a perpetual motion machine is imposible. I think the term is more commonly used like I defined it...with the energy coming from somewhere that has such a large source that it can be considered limitless. (such as motion created by the transfer of heat energy from the air, etc.)

{I think I fixed it to how it should be - Lukie}