Sonic screwdriver tightens up fundamental physics
Friday, April 20, 2012 - 09:01
in Physics & Chemistry
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.