This site is no longer being updated. The Vega Science Trust closed in March 2012, and this site has been left here for reference purposes.
Video recorded in 2007.
When two different types of conductors are pushed into a potato chemical reactions take place charging them up - we have a simple electrochemical cell. A potato, zinc screw and carbon rod produce about 1V. We experiment joining a few of these cells up in series and then in parallel circuits to increase the total voltages and currents. With these batteries we power various electrical devices.
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