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New Twist on Power Walking
An anonymous reader writes "Carrying a newly designed backpack loaded with between 44 and 84 pounds of gear, users generate enough electricity to simultaneously power an MP3 player, a PDA, night vision goggles, a handheld GPS, a CMOS image decoder, a GSM terminal in talk mode, and Bluetooth."
Here's a picture http://www.heise.de/bilder/63699/0/1 . The aparatus just takes a small part of the weight. However, you have to put something in your backpack, whatever it is, to generate power.
Except they were wearing plain clothes, did not shout "police, stop!", he didn't run until after he'd picked up a newspaper, walked through the ticket bararier, and saw a train about to leave, same as any other london commuter
I think you missed the point. After RTFA the gear between 40lbs-80lbs is your normal gear that you will take in a backpack. Clothing, Tent, Sleeping Bag, Towel, Toiletries, Oder Free Soap, Pocket Knife, First Aid Kit, Cooking pans, Fire starter kit, Water, food. All this combined could make the pack easily 50-80 lbs. the article never gave the weight to the pack when it was empty but they did state it did help you carry yourself better thus making the load more efficient.
If something is so important that you feel the need to post it on the internet... It probably isn't that important.
A backpack makes better sense because it is jostling a large amount of weight predictably in the vertical direction. F = m * a. On the other hand/knee, your wrist or ankle-mounted generator is only moving that body part, a much smaller mass.