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Facebook user Brusspup performed a simple, but interesting, experiment. Passing a tube of water across the front of a loudspeaker yields a standing wave when tuned to a 24 hz sound wave. Then when switched to 23 hz, it appears that the water droplets are actually traveling backwards through the tube they just came out of. A camera recording at a standard 24 fps is playing tricks with the eye when the frequency of the sine wave is very similar.

Michael Colombo

Michael Colombo

In addition to being an online editor for MAKE Magazine, Michael Colombo works in fabrication, electronics, sound design, music production and performance (Yes. All that.) In the past he has also been a childrens’ educator and entertainer, and holds a Masters degree from NYU’s Interactive Telecommunications Program.


  • http://twitter.com/thorickC thorick chow (@thorickC)

    nice effect.

  • johannesgj

    my mind is blown.
    please continue showing these thoughts to us dear water magician!

  • wow

    Very cool. thx

  • Pingback: MAKE | Visualizing Water & Sound Part 2()

  • alex

    this concept would make a cool water fountain or shower for the rich to wow their rich friends.

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