It is very well known that when putting a copper and a zinc rod into a potato, a voltage can be measured across the two rods, that is how the potato clock works. However we can take this idea further using a tree. As a tree has a higher volume than a potato, more energy can be transferred from the z...By: robinotics
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from Instructables: exploring - technology - robots http://ift.tt/1FPpy66
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