-
1 Alexanderson, Ernst Frederik Werner
[br]b. 25 January 1878 Uppsala, Swedend. ? May 1975 Schenectady, New York, USA[br]Swedish-American electrical engineer and prolific radio and television inventor responsible for developing a high-frequency alternator for generating radio waves.[br]After education in Sweden at the High School and University of Lund and the Royal Institution of Technology in Stockholm, Alexanderson took a postgraduate course at the Berlin-Charlottenburg Engineering College. In 1901 he began work for the Swedish C \& C Electric Company, joining the General Electric Company, Schenectady, New York, the following year. There, in 1906, together with Fessenden, he developed a series of high-power, high-frequency alternators, which had a dramatic effect on radio communications and resulted in the first real radio broadcast. His early interest in television led to working demonstrations in his own home in 1925 and at the General Electric laboratories in 1927, and to the first public demonstration of large-screen (7 ft (2.13 m) diagonal) projection TV in 1930. Another invention of significance was the "amplidyne", a sensitive manufacturing-control system subsequently used during the Second World War for controlling anti-aircraft guns. He also contributed to developments in electric propulsion and radio aerials.He retired from General Electric in 1948, but continued television research as a consultant for the Radio Corporation of America (RCA), filing his 321st patent in 1955.[br]Principal Honours and DistinctionsInstitution of Radio Engineers Medal of Honour 1919. President, IERE 1921. Edison Medal 1944.BibliographyPublications relating to his work in the early days of radio include: "Magnetic properties of iron at frequencies up to 200,000 cycles", Transactions of the American Institute of Electrical Engineers (1911) 30: 2,443."Transatlantic radio communication", Transactions of the American Institute of ElectricalEngineers (1919) 38:1,269.The amplidyne is described in E.Alexanderson, M.Edwards and K.Boura, 1940, "Dynamo-electric amplifier for power control", Transactions of the AmericanInstitution of Electrical Engineers 59:937.Further ReadingE.Hawkes, 1927, Pioneers of Wireless, Methuen (provides an account of Alexanderson's work on radio).J.H.Udelson, 1982, The Great Television Race: A History of the American Television Industry 1925–1941, University of Alabama Press (provides further details of his contribution to the development of television).KFBiographical history of technology > Alexanderson, Ernst Frederik Werner
-
2 Electricity
-
3 Broadcasting
See also: INDEX BY SUBJECT AREA[br] -
4 Electronics and information technology
See also: INDEX BY SUBJECT AREA[br]Byron, Ada AugustaNapier, JohnRiche, Gaspard-Clair-François-MarieSchickhard, WilhelmBiographical history of technology > Electronics and information technology
-
5 Telecommunications
См. также в других словарях:
Ernst Frederik Werner Alexanderson — Ernst Fredrik Werner Alexanderson (* 25. Januar 1878 in Uppsala; † 14. Mai 1975 in Schenectady, Schenectady County) war ein schwedisch amerikanischer Elektroingenieur. Ausgebildet an der Technischen Hochschule Stockholm und an der Technischen… … Deutsch Wikipedia
Alexanderson, Ernst F.W. — ▪ American electrical engineer in full Ernst Frederik Werner Alexanderson born Jan. 25, 1878, Uppsala, Sweden died , May, 1975, Schenectady, N.Y., U.S. electrical engineer (electric generator) and television pioneer who developed a high… … Universalium
Frederik — (as used in expressions) Alexanderson Ernst Frederik Werner de Klerk Frederik Willem Frederik Hendrik Christian Frederik Carl Georg Valdemar Axel Olav Alexander Edward Christian Frederik Willem Frederik George Lodewijk Willem Alexander Paul… … Universalium
Ernst — /errnst/; Ger. /erddnst/, n. 1. Max /maks/; Ger. /mahks/, 1891 1976, German painter, in the U.S. 1941 49, in France 1949 76. 2. a male given name, form of Ernest. * * * (as used in expressions) Ackermann Konrad Ernst Alexanderson Ernst Frederik… … Universalium
Werner — /werr neuhr/; for 1 also Ger. /verdd neuhrdd/, n. 1. Alfred /al fred, frid/; Ger. /ahl frddayt/, 1866 1919, Swiss chemist: Nobel prize 1913. 2. a male given name. * * * (as used in expressions) Alexanderson Ernst Frederik Werner Arber Werner… … Universalium
Ernst Alexanderson — (Uppsala (Suède), 25 janvier 1878 – 14 mai 1975) était un ingénieur électrique suédo américain. C est l un des pionniers du développement de la radio et de la télévision. Ernst Alexanderson a été introduis dans le National Inventors Hall of Fame… … Wikipédia en Français
List of Swedish Americans — The following is a list of notable Swedish Americans who have made significant contributions to the United States, or have appeared in the news numerous times:ListEntertainmentActors* Maud Adams, Bond girl. * Louie Anderson, stand up comedian,… … Wikipedia
Liste Persönlichkeiten der Elektrotechnik — Liste von Persönlichkeiten, die Beiträge im Bereich der Elektrotechnik geleistet haben: Inhaltsverzeichnis A B C D E F G H I J K L M N O P Q R S T U V W X Y Z … Deutsch Wikipedia
14. Mai — Der 14. Mai ist der 134. Tag des Gregorianischen Kalenders (der 135. in Schaltjahren), somit verbleiben noch 231 Tage bis zum Jahresende. Historische Jahrestage April · Mai · Juni 1 2 … Deutsch Wikipedia
5. Juni — Der 5. Juni ist der 156. Tag des Gregorianischen Kalenders (der 157. in Schaltjahren), somit verbleiben noch 209 Tage bis zum Jahresende. Historische Jahrestage Mai · Juni · Juli 1 2 … Deutsch Wikipedia
