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 ...

The idea of a perpetual motion machine captivates many scientists, envisioning a device that functions indefinitely without an external energy source. This concept evokes images of self-sustaining ...

Inventors have long tried to cheat the laws of physics. From quirky toys to impossible contraptions, these are the strangest ...

On Sept. 20, 1913, rumors were running rampant around North Dakota that J. W. Kennedy, of Mandan, North Dakota, had invented just such a machine. A news clipping about J.W. Kennedy and his perpetual ...

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 ...