02-08-2008, 02:15 PM
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Device on knee can produce electricity
Device on knee can produce electricity
Quote:
WASHINGTON - Call it the ultimate power walk. Researchers have developed a device that generates electrical power from the swing of a walking person's knee. With each stride the leg accelerates and then decelerates, using energy both for moving and braking.
Max Donelan and colleagues reasoned that a device that helps the leg decelerate could generate power without requiring much additional energy from the person.
It's sort of like the way that some hybrid-electric cars produce electricity from braking.
With the device, a minute of walking can power a cell phone for 10 minutes, Donelan, of Simon Fraser University in Burnaby, British Columbia, said in a telephone interview. Other potential uses include powering a portable GPS locator, a motorized prosthetic joint or implanted drug pumps.
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This sounds promising...
It reminds me of something I heard on TV not too long ago where energy can be created using revolving doors in big buildings as turbines and have them all connected to a generator to produce electricity...
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