Friday, 26 June 2015

penny battery

10:43  Telli k  No comments

A penny battery can be useful in producing a small amount of volts. To make a penny battery it is crucial that there are two different kinds of metals with a substance in between them. To begin, scratch off the copper coating on one side of a penny exposing the metal zinc (silver color). This proces...
By: electronici

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from Instructables: exploring - technology - robots http://ift.tt/1LAyGSg

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