Barkhausen , Heinrich Georg
(1881–1956) German physicist
After attending the gymnasium and engineering college in his native city of Bremen, Barkhausen gained his PhD in Göttingen and in 1911 became professor of electrical engineering in Dresden. Here he formulated the basic equations governing the coefficients of the amplifier valve.
In 1919 he discovered the Barkhausen effect, observing that a slow continuous increase in the magnetic field applied to a ferromagnetic material gave rise to discontinuous leaps in magnetization, which could be heard as distinct clicking sounds through a loudspeaker. This effect is caused by domains of elementary magnets changing direction or size as the field increases.
In 1920, with K. Kurz he developed an ultrahighfrequency oscillator, which became the forerunner of microwave-technology developments. After World War II he returned to Dresden to aid the reconstruction of his Institute of High-Frequency Electron-Tube Technology, which had been destroyed by bombing, and remained there until his death.

Scientists. . 2011.

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  • Barkhausen, Heinrich Georg — ▪ German physicist born Dec. 2, 1881, Bremen, Ger. died Feb. 20, 1956, Dresden, E.Ger. [Germany]       German physicist who discovered the Barkhausen effect, a principle concerning changes in the magnetic properties of metal.       Barkhausen… …   Universalium

  • Heinrich Georg Barkhausen — Briefmarkenausgabe zum 100. Geburtstag Barkhausens (Deutsche Post der DDR 1981) Heinrich Georg Barkhausen (* 2. Dezember 1881 in Bremen; † 20. Februar 1956 in Dresden) war ein deutscher Physiker …   Deutsch Wikipedia

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  • Barkhausen effect — /bahrk how zeuhn, bahr kow /, Physics. the phenomenon of short, sudden changes in the magnetism of a ferromagnetic substance occurring when the intensity of the magnetizing field is continuously altered. [1955 60; named after H. Barkhausen (1881… …   Universalium

  • Heinrich Barkhausen — Heinrich Georg Barkhausen (* 2. Dezember 1881 in Bremen; † 20. Februar 1956 in Dresden) war ein deutscher Physiker. Nach ihm sind in der Physik und Technik unter anderem der magnetische Barkhausen Effekt, die Barkhausenschaltung, die Barkhausen… …   Deutsch Wikipedia

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  • Georg Barkhausen — (* 28. Juni 1849 in Bückeburg; † 1. April 1923 in Hannover; vollständiger Name: Karl Georg Barkhausen) war ein deutscher Bauingenieur und Hochschullehrer. Als Professor war er von 1904 bis 1907 auch Rektor der Technischen Hochschule Hannover.… …   Deutsch Wikipedia

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  • Barkhausen — Bạrkhausen,   Heinrich Georg, Physiker, * Bremen 2. 12. 1881, ✝ Dresden 20. 2. 1956; ab 1911 Professor an der TH Dresden; gründete dort das erste Institut für Schwachstromtechnik; grundlegende Arbeiten über Elektronenröhren und elektrischen… …   Universal-Lexikon

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