If you pay attention to tech news, you may have already heard about scientists using audio waves to move water and sand in interesting and weird patterns. But we’re willing to bet that you’ve never seen anything like this before.
Japanese scientists have now figured out to manipulate and move objects — in mid-air!
Engineers from the University of Tokyo and the Nagoya Institute of Technology have introduced to the public a device that does just that.
The apparatus consists four phased arrays of of externally-controlled speakers intersecting at one focal point. Amazingly, the process is silent since the the device uses ultra-sonic speakers.