Bouncing a Drop of Water on Water

Here's a nifty party trick, courtesy of physics: how to bounce droplets of water on the surface of water.

Physics Buzz Blog explains:

Typically, when a droplet of water plunges into a pool of water, it will bounce slightly and then coalesce with the rest of the water. But there's a way to keep the bounce going indefinitely.

If you put the pool of water on top of a loud speaker, you can vibrate the surface. This vibration can cause water droplets to continuously bounce and levitate atop the liquid surface.

Physicists Pablo Cabrera-Garcia and Roberto Zenit from National Autonomous University of Mexico conducted the experiments and filmed them with a high-speed camera for your viewing pleasure.

Hit play or go to Link [YouTube]


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