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- Q105128 description "Swiss physicist".
- Q105128 description "Swiss physicist".
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- Q105128 abstract "Heinrich Greinacher (May 31, 1880 in St. Gallen – April 17, 1974 in Bern) was a German-Swiss physicist. He is regarded as an original experimenter and is the developer of the magnetron and the 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 physics at both 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. In 1914, he invented the Greinacher multiplier (a rectifier circuit for voltage doubling). In 1920, he generalized this idea to a cascaded voltage multiplier, and developed detection methods for charged particles (proportional counter, spark counter). In the 1930s, using an independently invented Greinacher-style multiplier to research atomic nuclei, British researchers discovered 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.".
- Q105128 birthDate "1880-05-31".
- Q105128 birthYear "1880".
- Q105128 deathDate "1974-04-17".
- Q105128 deathYear "1974".
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- Q105128 dateOfBirth "1880-05-31".
- Q105128 dateOfDeath "1974-04-17".
- Q105128 name "Greinacher, Heinrich".
- Q105128 shortDescription "Swiss physicist".
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- Q105128 comment "Heinrich Greinacher (May 31, 1880 in St. Gallen – April 17, 1974 in Bern) was a German-Swiss physicist. He is regarded as an original experimenter and is the developer of the magnetron and the 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 physics at both Zurich, Geneva and Berlin. He also trained as a pianist at the Geneva Conservatory of Music.".
- Q105128 label "Heinrich Greinacher".
- Q105128 givenName "Heinrich".
- Q105128 name "Greinacher, Heinrich".
- Q105128 name "Heinrich Greinacher".
- Q105128 surname "Greinacher".