Perhaps the most persistent nonsense in physics: the perpetual motion machine. Bad ideas come and go in physics. But there’s one bit of nonsense that is perhaps more persistent than all others: the ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

While this is authentic footage of a genuine product, the "perpetual" marble machine does not operate infinitely without an additional energy source. Rather, it uses batteries and a magnet to create ...

An Irish technology development company Steorn claims it can produce free, clean and constant energy without taking the energy from an external source. In effect, the company claims it has produced an ...

Some inventions capture our imagination but will remain forever impossible, from true perpetual motion machines to faster‑than‑light travel.