Heinrich Greinacher

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Heinrich Greinacher
Heinrich Greinacher, 1914
Born(1880-05-31)May 31, 1880
DiedApril 17, 1974(1974-04-17) (aged 93)
OccupationPhysicist
Children2

Heinrich Greinacher (May 31, 1880 in

Greinacher multiplier
.

Greinacher was the only child of master shoemaker Heinrich Greinacher and his wife Pauline, born Münzenmayer. He went to school in St. Gallen and studied

Zurich, Geneva and Berlin. He also trained as a pianist at the Geneva Conservatory of Music. Originally a German citizen, he was naturalized in 1894 as a Swiss citizen. In Berlin, Greinacher attended the lectures of Max Planck and received a doctorate in 1904 under Emil Warburg. He did his habilitation in 1907 at the University of Zurich, and in 1912, he moved to Zurich on a permanent basis. From 1924 to 1952, he was full professor of Experimental Physics at the University of Bern
and the director of the Physical Institute (formerly Physics Cabinett).

In 1912, Greinacher developed the magnetron and gave a fundamental mathematical description of this tube.

artificial radioactivity
.

Greinacher was married twice: in 1910 to the German Marie Mahlmann, with whom he had two children, and then again in 1933 to Frieda Urben from Inkwil.

Foundation

A foundation was established in Bern in 1988 with the name of Heinrich-Greinacher-Stiftung from the estate of the couple Frieda and Heinrich Greinacher. Interest income of the Foundation's capital is used to fund the Heinrich Greinacher Prize and for the promotion of young researchers and scientists.

See also

References

  • Heinz Balmer: Heinrich Greinacher zum Abschied. In: Physikalische Blätter. Bd. 30 (1974), Heft 10, S. 463–465
  1. ^ H. Greinacher (1912) "Über eine Anordnung zur Bestimmung von e/m" (On an apparatus for the determination of e/m), Verhandlungen der Deutschen Physikalischen Gesellschaft, 14 : 856–864.
  2. ^ "Invention of Magnetron"
  3. ^ Greinacher, H. (1914), "Das Ionometer und seine Verwendung zur Messung von Radium- und Röntgenstrahlen" [The ionometer and its application to the measurement of radium- and Röntgen rays], Physikalische Zeitschrift (in German), 15: 410–415. Greinacher's voltage doubler appears in Fig. 4 on p. 412. He used chemical (electrolytic) rectifiers, which are denoted "Z" (Zellen, cells).
  4. S2CID 119816536

Publications

  • Negotiations of the Swiss Society of Natural Sciences. Issue 154 (1974), p. 239-251 (with a catalog)
  • Hans Erich Hollmann:physics and technology of the ultra-waves. Volume 1 Production ultrakurzwelliger oscillations.

External links
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