Ping pong balls are fragile—they can be easily be crushed with your fingers. Ping pong paddles are really hard—they can easily break your finger bones and do serious damage. With that in mind, watch this video of a supersonic ping pong ball destroying a paddle in slow motion. It's incredible.
And watch it in slow motion! This amazing video shows how a couple of researchers juggle ping pong balls with a stream of water - at times actually throwing in a new ball and letting the water throw the old one back.
Recently, a group of students at Purdue University used a simple device to make a ping-pong ball break the speed of sound. But that's not the coolest part. The device they used, called a de Laval nozzle, is actually centuries old. It's no exaggeration to call this the gadget that made the industrial revolution…