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‘Tractor beam’ grabs beads with sound waves – BBC News

‘Tractor beam’ grabs beads with sound waves – BBC News

It offers the kind of remote control that naturally draws comparison with the “tractor beams” of science fiction.So far the team has tested the design on small pea-sized objects, which they can manipulate from 30-40cm away.

Source: ‘Tractor beam’ grabs beads with sound waves – BBC News