Hans Christian Oersted (1777-1851), Danish physicist and chemist, born in Rudköbing, and educated at the University of Copenhagen. He was appointed professor of physics at the University of Copenhagen in 1806. In 1819 he discovered that a magnetic needle is deflected at right angles to a wire carrying an electric current, thus initiating the study of electromagnetism. He was also the first to isolate (1825) aluminum. His Manual of Mechanical Physics appeared in 1844.
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