Hyperbolic Funnel

The Coin Funnel™ illustrates Kepler's Laws of Planetary Motion and offers educational fun to millions of people who roll coins on its surface.

It's hypnotizing! Adults and children are intrigued and amazed by this unique, mysterious phenomenon of the universe! The coins seem to defy gravity as people are memorized by the spinning coins as they bob & weave and even collide at times. People play it again and again, with the cost of play determined only by the loose coins in their pockets.