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Potato power
In our occasional habit of asking obscure questions for which you will have an answer, we turn to our regular correspondent John Loader at DotSix Brailling Services.
“I used to have a clock that was powered by plugging electrodes into a potato or a lemon. My laptop battery lasts about three hours, and I wondered if anyone could calculate how many items of fruit or veg it would take – and what would be the best sort – to act as a supplementary power supply to recharge the battery.”
Or, how big a potato John would need to act as a useful laptop battery.
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