The latest video supposedly depicting the "perpetual" marble machine, however, was authentic footage and featured a physical product. But a perpetual-motion machine?

Learn how to make a perpetual marble machine using cardboard! Follow this guide to create a fascinating, never-ending motion project that's both fun and educational.

For centuries, people have been trying to invent perpetual motion machines. The laws of physics, though, are working against them.

Science Explained: The Physics of Perpetual Motion Machines Could we ever make a device that operates with absolutely no energy loss?

Having trouble trying to keep your slinky in motion? Consider using this perpetual escalator machine instead.

Or mentions in pop culture, like when Lisa Simpson invents a perpetual motion machine. Last year, a different video showed another simple perpetual marble motion loop. But it also doesn’t qualify.

Having trouble trying to keep your slinky in motion? Consider using this perpetual escalator machine instead.