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Lemon battery

#1
Magical Realist Offline
I was thinking of sticking a copper nail and a zinc nail into a lemon and connecting an LED between them. Would it be enough to light it? Find out here:

http://hilaroad.com/camp/projects/lemon/...ttery.html

Better yet, create some LEDs with a zinc coated and copper coated lead, then poke them all into the lemons of a lemon tree. Naturally powered christmas decoration!
#4
elte Offline
I found it surprising that it was higher for potatoes than lemons too.

I wonder how long a vinegar or muriatic acid battery would light an LED.  Vinegar in a plastic container, for example.  

Or maybe a solar cell charging a super capacitor.  Would the capacitor store enough charge to light an LED overnight?


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