|MadSci Network: Other|
The short answer is yes. A clock that runs off a single AA battery will work just fine. Begin by getting a piece of copper metal and a piece of zinc metal. The copper and zinc metals create a battery with the electrolytes in the fruit. A lemon would work far better because the citrus has much more acid. The hydrogen from the acid in the lemon would give more current from the battery, while the less acidic apple would give less current. However, apples have plenty of electolytes to operate a small clock. Even potatoes have enough electrolytes for a small clock. I would try and use an LCD type clock and not a mechanical one. The mechanical clocks use more current. Perhaps a good experiment would be to see how long a battery using different fruits and vegetables can run a clock. Good luck. -Fred
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