> It's the electrodes that produce the voltage difference. > The food-electrolyte contributes to cell effectiveness, but not PD. > > RM Well, yes, in a world perfect for my version of wit the facts would line up like a syzygy Joseph H Colquitt II, BSc (Chem - including electrochemistry ta very much), MNZIC, ARNGB, OBE -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist