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Friday, 7 June 2019

History of aluminium

  June 07, 2019      No comments   Edit
History of aluminium. The history of aluminium in human usage goes back at least 2,500 years, when its compound alum was used for dyeing and city defense. During the Middle Ages, alum was traded in international commerce. In the Age of Enlightenment, the earth of alum, alumina, was shown to be an oxide...
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