Perpetual motion machines are impossible, right? They violate the laws of thermodynamics. And yet people have been trying to engineer one for centuries. YouTuber gzumwalt posted a video of what looks ...

Marble machines are the coloring books of the appliance world. A weirdly soothing attention vortex, this contrivance asks nothing and offers nothing except the joy of watching gravity pull a sphere ...

Marble machines are the coloring books of the appliance world. A weirdly soothing attention vortex, this contrivance asks nothing and offers nothing except the joy of watching gravity pull a sphere ...

For decades, the question of how to keep a Slinky in perpetual motion has befuddled scientists and toy owners alike. Now, one man may have the answer to ensure the Slinky fun never stops. Matthias ...