This is a video of Action Lab’s James Orgill dropping a steel ball and ping-pong ball on one of the world’s bounciest surfaces to see how long they’ll bounce for. James says the surface has a coefficient of restitution (the ratio of the final to initial relative velocity between two objects after a collision) of over 0.97, meaning very little kinetic energy is lost in the bounce. The best part about the whole experiment? You can repeat it at home, because the system is just a balloon stretched over the mouth of a cup. How about that! Unfortunately, I couldn’t find any rubber balloons around the house, and a mylar balloon did not have the same effect. Neither did a sandwich bag. “Do you have any condoms?” Only the XXL ones I get specially made, but I’m not wasting twelve bucks.

Keep going for a short form (1-minute) video, followed by a full-length 7-minute version in the event the internet hasn’t already destroyed your attention span.