4M POTATO CLOCK IN JOHANNESBURG
You may know potatoes are a good source of potassium, but did you know they can be used to power an alarm clock? This kit contains a digital clock and the instructions and everything you need (except the spuds) to run it. Just push the zinc and copper electrodes into the potatoes causing an oxidation/reduction reaction that is converted to low voltage. A digital clock powered by potatoes!
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Price:
R 115,00
R 115,00
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