Researchers have come up with a new and improved way to levitate objects using sound waves alone, an impressive feat of mixed-reality technology that could pave the way for some seriously futuristic hologram-like displays.
As seen in a new video, the researchers were able to levitate individual polystyrene beads and water particles inside a special enclosure, making them move in three dimensions by adjusting the output of hundreds of small speakers, set up in a grid.
In one demonstration, they were even able to float a tiny piece of fabric in midair, on which they projected a movie of a leaping rabbit.
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