Backpack generates power from walking


Humping along just under 85 pounds (38 kg) of weight in the backpack can produce up to 7 watts of electricity, Lawrence Rome and colleagues at the University of Pennsylvania report.

This is more than enough electricity to simultaneously power an MP3 music player, a personal digital assistant, night vision goggles, a handheld global positioning satellite navigation device, and a mobile telephone. posted by Cyndy | link | | |
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