High Quality Content by WIKIPEDIA articles! Amos Emerson Dolbear (November 10, 1837 – February 23, 1910) was an American physicist and inventor. His patents interfered with Guglielmo Marconi's planned activities in the U.S. Dolbear researched electrical spark conversion into sound waves and electrical impulses. He was a professor at University of Kentucky in Lexington from 1868 till 1874. In 1874 he became the chair of the physics department at Tufts University in Medford, Massachusetts.

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