A Visual Dictionary of Famous Plane Curves is an outstanding resource for curves found in nature, man-made objects, and mathematics. Other websites that list exotically named curves also animate how they are created. One of the most unusually named curves, the “Witch of Agnesi”, has an unusual etymology. A number of these curves will be familiar to anyone who has used a Spirograph. Previously.
posted by Tube on Jan 19, 2008 - 13 comments

Great Shockwave Game - "Doom Funnel Chasers" asks you to launch projectiles through space, plugging the funnels o' doom. Each attempt leaves its own trail, producing a fun Spirograph-ic effect. [Found via Qarcade]
posted by bullitt 5 on Dec 29, 2004 - 25 comments

Good Time Mix Machine. Artist Rosemarie Fiore has turned a classic Scrambler amusement park ride into the world's biggest Spirograph.
posted by gottabefunky on Sep 8, 2004 - 3 comments