#video of the #Clarendon-Dry-Pile, whose battery appears to be about 30mm in diameter.
on 02018-09-24#PDF #paper about the "Clarendon Dry Pile", aka the Oxford Electric Bell. It runs on 1 nA, 2000 V.
on 02018-09-24the #Clarendon-Dry-Pile has been ringing its bell since 1840, powered by probably a Zamboni battery, which yields nanoamps at 0.8V per cell.
on 02018-09-24