Have you all heard that scientist at Bristol University are working on making a real sonic screwdriver?
It's already being tested in the medical community to move cells around and separate the diseased cells from healthy ones.
In the future: "engineers are now figuring out how to spin the ultrasonic waves to create a twisting force similar to a tornado, which they say could be used to undo screws. Rotating ultrasonic fields could also act like the head of a real screwdriver."
For one of the articles:
http://cosmiclog.msnbc.msn.com/_news/2010/12/08/5612100-real-life-twist-for-sonic-screwdriver
Doctor Who: The Time Vortex
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