1661, Dec 181751, Aug 30
a Swedish scientist, inventor and industrialist. He made significant contributions to the economic and industrial development of Sweden, particularly mining. One His greatest achievement was an automated factory powered entirely by water; automation was very unusual at the time. product from the factory was the Scandinavian padlock ("Polhem locks", Swedish: Polhemslås), essentially the first design of the variation of padlocks common today. Polhem was not only active within the field of mechanics, he actively wrote essays concerning medicine, social criticism, astronomy, geology and economics.
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