MAKE: AMENDS Errata for This Article

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Correction for page 17
In the Penny-Powered LED article on page 17, we implied there was zinc on the outside of the dimes, when in fact there isn't any zinc on the exterior surface of any U.S. coins -- it's all nickel. Zinc is too soft and reactive, but there is still enough potential between the nickel and the copper to make a battery. However, it would work better with zinc.


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