When the scriptwriters for Doctor Who imagined a futuristic device, they came up with the Sonic Screwdriver. Now a team of physicists at the University of Dundee have taken equipment designed for MRI-guided focused ultrasound surgery and demonstrated a real Sonic Screwdriver – lifting and spinning a free-floating 10 cm diameter rubber disk with an ultrasound beam.
Universtity of Dundee
[youtube:http://www.youtube.com/watch?v=SeB69CcLEI8]
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