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Last updated on April 16, 2014 at 17:34 EDT

Bullets of Sound

March 10, 2011

A toy commonly seen on office desks has inspired a powerful new technology. Researchers at the California Institute of Technology modified Newton’s Cradle, that series of stainless steel balls suspended by fishing wire, to create extremely focused and destructive sound waves. See how they did it in this episode of Innovation Nation with Miles O’Brien. credit: NSF