Overheard: Word of the Day

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» VIEW ALL POSTS Feb 22 2008   3:24PM GMT

Overheard: A new meaning for “power walking”



Posted by: Margaret Rouse
Tags:
energy
knee-brace.jpg A new energy-capturing knee brace can generate enough electricity from walking to operate a portable GPS locator, a cell phone, a motorized prosthetic joint or an implanted neurotransmitter. With each stride the leg accelerates and then decelerates, using energy both for moving and braking. It’s sort of like the way that some hybrid-electric cars produce electricity from braking.

Randolph E. Schmid, Device generates power from a knee’s swing

(Photo Credit: Greg Ehlers/Simon Fraser University)

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