This is an absorbing exhibit that is guaranteed to draw audiences the moment someone uses it. The Vortex is a funnel with the cross-sectional shape of a parabola. A coin is dropped on top and rolls on its edges along the walls of the funnel. It seems to defy gravity as it rolls horizontally, tracing a spiral path as it moves downwards. The coin speeds up to generate centrifugal force to keep it rolling on the wall. Several coins can be dropped after another and allowed to race down the Vortex, to the enjoyment of everyone watching it. This exhibit demonstrates how forces such as gravity, friction, and angular momentum interact to make the coin move this way.

Vortex is available in the "I AM a Scientist" travelling exhibit package.