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EncyclopediaOersted or Ørsted, Hans ChristianOersted or Ørsted, Hans Christian (häns kris'tyän ör'sti&thstrok;) [key], 1777–1851, Danish physicist and chemist. He was professor at Copenhagen from 1806. His discovery (1819) that a magnetic needle is deflected at right angles to a conductor carrying an electric current established a relationship between magnetism and electricity and initiated the study of electromagnetism. In 1825 his attempt to isolate aluminum succeeded in producing an impure form of the metal. The unit of magnetic field strength is named for him. The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved. More on Hans Christian Oersted from Infoplease:
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