perpetual motion

A Four-Way Tetrahedral Rack Gearset That Works

This is a video of Youtuber Henry Segerman demonstrating the 'mathematical art' four-way tetrahedral rack gearset he designed and had 3-D printed by Shapeways (you can get...
June 29, 2018

The Future: Vibration Powered Batteries

Brother (the printer/sewing machine company, not my brother Frank), has developed vibration-powered batteries that promise to stay charged simply by shaking them. Shake Weight battery chargers? I...
July 19, 2010

Awesome: The Perpetual Domino Machine

The Ouroborus Domino Machine was created by Karl Lautman and knocks over and picks up dominoes all by itself -- with magic! It's really therapeutic to see....
February 25, 2010