This is pretty cool, now figure out how to scale it to a higher output!

Half a century ago, the pile's inventor had said it will work forever, and so far it looks like he was right. Karpen's perpetual motion machine now sits secured right in the director's office. It has been called "the uniform-temperature thermoelectric pile," and the first prototype has been built in the 1950s. Although it should have stopped working decades ago, it didn't.

The scientists can't explain how the contraption, patented in 1922, works. The fact that still puzzles them is how a man of such a scientific stature such as Karpen's could have started building something "that crazy."" See the rest HERE