Restaurants could soon have food floating straight into your mouth, as scientists have developed a technique that can levitate tiny amounts of eatables using sound waves.
Researchers from University of Sussex in the UK discovered how to tune high frequency sound waves to make almost any foodstuff float — provided that it was no bigger than a pea. Acoustic levitation works by creating a powerful “standing wave” of sound. This can trap objects in a kind of cage of sound waves.
Scientists say the technique could be used in floating pills to make the process of taking in medicine fun for children.
