See the simple laws of physics at work: Two pendulums swing on a string, transferring energy from one to the other and back again. This demonstration by

He’s never heard of Spirograph, but Swedish artist Eske Rex has created a huge drawing machine that creates similar results. [partner id=”wireduk”]With nothing but a couple of pendulums, a seemingly simple wooden construction, and a range of colored ballpoint pens, Rex’s Drawingmachine creates larger-than-life graphic images that, like snowflakes, are each unique. Inspired by the…