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Water Droplets Suspended in Mid-Air? See This Video of Acoustic Levitation With Water Droplets…

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See water droplets suspended in mid-air with Science! What you’ll see in this video is the effects of an acoustic levitator. The device was initially developed by NASA to simulate microgravity. Now it’s being used by the pharmaceutical industry do develop better drugs.

The two parts of the apparatus seen in the image above are both speakers. They put out a sound at about 22 kHz, which is beyond the human range of hearing. When precisely aligned they interfere with each other and create a standing wave. The droplets are trapped in the nodes of that wave.

[READ MORE](http://hackaday.com/2012/12/06/acoustic-levitation-of-water-droplets/)

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“Water Droplets Suspended in Mid-Air? See This Video of Acoustic Levitation With Water Droplets…”