Rather than go the magnetic route, [Jacob] levitated a ping-pong ball on a cushion of air. Now, it would be possible to cheat here, anyone who’s seen a demonstration of Bernoulli’s principle ...

He calls it the Ping Pong Mauler ... to propel the balls needs AC power. This means there is a tether that keeps it from roaming too far from home. [Christian] included an air tank in the design ...

Wonderball is an interactive ping pong table which adds a digital twist to traditional table tennis. The hi-tech table uses digital projectors and sensors which track the movements of the ball ...