Video: "Crazy Circle Illusion," and the wonderful classic art/science/toy Spirograph.http://boingboing.net/2014/07/25/amazing-optical-illusion-and-s.html …
0 replies
4 retweets
2 likes
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.