http://news.yahoo.com/s/ap/20050909/ap_on_hi_te/energetic_backpack;_ylt=AnWKOhFDSBcQ96zyFtNvdpus0NUE;_ylu=X3oDMTA3cjE0b2MwBHNlYwM3Mzg- WASHINGTON - As soldiers, hikers and students can testify, it takes energy to haul around a heavy backpack. Now, researchers have developed a backpack that turns that energy into electricity. It doesn't crank out a lot of juice — just a bit more than 7 watts — but that's enough to run things like an MP3 player, a personal data assistant, night vision goggles, a handheld global positioning system or a GSM cell phone. The development could eventually allow field scientists, hikers, explorers, soldiers and disaster workers to produce their own electricity. The researchers used a backpack fastened to the carrying frame by springs. The up-and-down motion caused by walking powers a small generator, producing electricity that can be used directly or stored in a capacitor or battery. _______________________________________________ Wear-Hard mailing listhttp://www.haven.org/mailman/listinfo/wear-hard
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