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Anna Gram Citrus Clock

  • 7th grade science fair project meets mod design.
  • Price: upon request
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    Anna Gram's clever Citrus Clock runs on...lemons? No, it's not magic. The experimental timepiece actually uses the same principles of electrolysis that a conventional battery uses. The acid of the open-faced lemon interacts with the zinc and copper plug it sits on to create enough power to run the digi clock for a week or longer.


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