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  1. Jun 5, 2007 #1

    Ivan Seeking

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    An old story that happened to come up today.

    http://news.nationalgeographic.com/news/2005/08/0818_050818_urinebattery.html

    This brings to mind an interesting flashlight design.
     
    Last edited by a moderator: Apr 22, 2017
  2. jcsd
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