light weight wind turbine Articles
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Green Futures Rely on Strong Magnets
When lodestone was first discovered before the 1800s people were amazed at this rock that got attracted to itself. They noticed that it pointed to a specific direction every time it was suspended freely or was placed on water. This led to its use in the first compass to give sailors direction as they went for expeditions at sea. Further investigations led to the production of stronger magnets ...
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