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Japan begins the first recorded production of new paper using old paper. All old documents in Japan are recycled into new paper and sold in paper shops.
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Leonardo da Vinci designs a windmill with a revolving turret.
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Hugh Platt discovers coke, a substance produced by burning coal.
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Sir Isaac Newton builds an electric generator composed of a rotating glass sphere.
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British engineer William Symington invents the steamboat for towing barges.
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