Corpus ID: 6514575

The Early History of the Permanent Magnet

  title={The Early History of the Permanent Magnet},
  author={E. Andrade},
The history of magnetism has been but little explored, and it is not at all generally known how powerful were the magnets produced more than two centuries ago or what methods were used for their production. It will be a surprise to many, too, that permanent magnets made from powdered iron oxide supposedly a quite recent invention were known in the eighteenth century. This article traces the history of permanent magnets from ancient times up to the invention of the Heusler alloys at the… Expand
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Geschichte der Physik
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