[cyberax]

To add to this, there is a well-known "free energy" device design: have wicks moving water from a lower reservoir to a higher reservoir. Then use it to drive a water wheel.

It sounds good on paper because everybody knows that water can travel up a wick. But of course, if the end of the wick in the upper reservoir is submerged in the water, then water will just as happily travel _down_ the wick. And if the end of the wick is in free air, then water will not drip from it because the same capillary forces prevent it.