[Know Tungsten] History of Tungsten - II

In 1781, the outstanding Swedish chemist Carl Wilhelm Scheele published the results of his experiments on the mineral tungsten in Kongl. Vetenskaps- Academiens Nya Handlingar, with the title: “The Constituents of Tungsten”.  In this work he demonstrated that the mineral contains lime and a still unknown acid, which he called tungstic acid. Torbern Bergman, professor in Uppsala, suggested preparing the corresponding metal by charcoal reduction of the obtained acid.

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