There is no better way to learn about science that doing it right and you have to admit most of us love a good do-it-yourself project especially if it produces a cool and unexpected result. What happens if you use magnesium and graphite( carbon) along with seawater in the right configuration? You get electron flow, which is electricity if you give them a place to flow to.
Here is a link to an actual patent using this concept.
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Gordon's expertise in the area of industrial energy efficiency and alternative energy. He is an experienced electrical engineer with a Masters degree in Alternative Energy technology. He is the co-founder of several renewable energy media sites including Solar Thermal Magazine.