[Jacob] proves that his system is actually working by levitating ping-pong balls with different weights. A Parallax Ping style ultrasonic sensor measures the distance between the top of the rig ...

An curved arrow pointing right. The ITTF (International Table Tennis Federation) has released a video showing the manufacturing of ping pong balls and it's incredibly satisfying to watch.

Where are all the ping-pong balls that aviation legend Dick Merrill stuffed in the wings of a Vultee V-1A on his historic 1936 transatlantic round-trip? Merrill and money man Harry Richman loaded ...