This site is no longer being updated.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.
Recorded in 2007.
This video should be used with the article linked to below.
When two different metals are placed in a salt solution (an electrolyte) the chemistry produces a voltage. This is called a cell. By wiring up a number of these cells we can make a battery and use it to power electrical circuits.
Links To Other Information:Seawater Battery
Article on seawater battery to accompany this film.Creative Science Centre
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