[Jacob] has put a slightly new twist on the levitating ball trick with his ping-pong ball levitation machine. We’ve all seen magnetic levitation systems before. Here on Hackaday, [Caleb] built ...

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 ...

"Where would the scale tip? On the left is a steel ball, on the right a ping-pong ball," Reddit user Veiy wrote, posing the conundrum. "I think the scale would raise to the right since the [buoyancy] ...