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Alexanderson, Ernst Fredrik Werner (25 January 1878–14 May 1975), engineer and radio and television pioneer, was born in Uppsala, Sweden, the son of Aron Martin Alexanderson, a professor, and Amelie von Heidenstam. From an early age Alexanderson showed interest in things scientific, and so he was sent to the Royal Institute of Technology at Stockholm, where he studied engineering, graduating in 1900. The Royal Institute had no specific program in electrical engineering, which was Alexanderson’s major interest, and so he spent the following year at the Königliche Technische Hochschule in Charlottenburg, Germany, then one of the best engineering schools of Europe. Here for the first time Alexanderson became acquainted with contemporary work in electromagnetics and wireless communication....

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Armstrong, Edwin Howard (18 December 1890–31 January 1954), electrical engineer and inventor, was born in New York City, the son of John Armstrong, a publisher, and Emily Smith, a teacher. Armstrong attended public schools in New York City and in Yonkers, New York, where the family moved in 1900. Fascinated by machinery, he enjoyed repairing broken toys for friends and later learned to repair automobiles. In his teens he was impressed by ...

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Berkner, Lloyd Viel (01 February 1905–04 June 1967), engineer, was born in Milwaukee, Wisconsin, the son of Henry Frank Berkner and Alma Julia Viel. Berkner and his two brothers were raised in the small towns of Perth, North Dakota, and Sleepy Eye, Minnesota. Berkner enrolled in a radio operator’s school and served aboard ship for one year after completing his high school studies. He then entered the University of Minnesota as an electrical engineering student, receiving a B.S. in 1927 as well as a commission as an aviator in the U.S. Naval Reserve. He later took some graduate courses in physics at Minnesota and at George Washington University but earned no graduate degree. In 1928 he married Lillian Frances Fulks; they had two children....