Of visual interest to the well-grounded inventor -
This one is surely galvanic, with 'dirt' as the electrolyte: http://www.youtube.com/watch?v=7jsCMbQN4U0 or especially lidmotor's "cement" battery, which he does not believe is galvanic . http://www.youtube.com/user/Lidmotor#p/u/6/HS2SGaXm1jY From: Wm. Scott Smith * take electricity from the reaction of the copper pipe that naturally occurs when it comes in contact with earth when driven a few feet into the ground.
