Harald Schering

Harald Ernst Malmsten Schering ( born November 25, 1880 in Göttingen, † April 10, 1959 in Hannover ) was a German physicist and professor of High Voltage Engineering.

Life

Schering was the first son of the Göttingen professor Ernst Christian Julius Schering (1833-1897) and his wife Maria Heliodora (born Malmsten ). His father had gained fame as editor of the works of Carl Friedrich Gauss and director of the Göttingen observatory. Harald Schering grew up in Göttingen where he studied physics there has been an assistant at the Geophysical Institute and received his PhD in 1904 on the Magpie Geitelschen dispersing apparatus, a device for measuring the conductivity of air.

He was hired in 1905 as a " research assistant " in the power laboratory of the Physikalisch- Technical Institute in Berlin- Charlottenburg ( today PTB), from 1910 as a permanent employee. His responsibilities included the electrical energy measurement technique gained great importance due to the increasing electrification. So he developed in 1914 with Ernst Alberti a measurement method for testing of current transformers. In World War I he was severely wounded as a reserve officer in 1916 and returned back to the PTR. There he was appointed in 1918 as the successor to Karl Willy Wagner conductor of the current laboratory ( later AC Laboratorium), and in 1919 a professor and member of the PTR. During this time, the idea for the loss factor measuring bridge, which was later bear his name was. In 1924 he published a book on the insulating materials in electrical engineering.

In 1926 he was called to the Technische Hochschule Hannover (now Leibniz Universität Hannover ) as successor to Wilhelm Friedrich Kohlrausch. There he worked from April 1, 1927 as Professor of Fundamentals of Electrical Engineering and High Voltage Engineering. In addition to these subjects, he taught theoretical electrical engineering and led the lecture a high voltage metrology. On his appointment to him the construction of a high voltage hall had been promised, whose foundation stone was laid on 13 November 1937 but this could be obtained only in 1947. Therefore, the experiments and laboratories had to be carried out in a wooden barrack, whose lack of space limited the research strong.

He was retired in 1949, represented his teaching field but until 1954. His successor was GKM Pfestorf, such as Schering a former employee of the PTR. Among the many honors received Schering for his life's work, is one of the great merit cross, which was awarded to him in 1957. Still bears the Subject High Voltage Engineering at the Leibniz University Hannover his name, as well as the building of the range high voltage of the Physikalisch-Technische Bundesanstalt ( PTB).

Services

He developed various electrical measuring instruments and methods, especially the eponymous Schering Bridge, a bridge circuit for the determination of loss factor and permittivity of electrical insulating materials, as well as the necessary components ( low-loss capacitors, galvanometer ).

Works

  • The Magpie Geitelsche dispersing apparatus and an attempt quantitative measurement of absolute distraction. Leipzig: Metzger & Wittig, 1904; Excerpts in: Annals of Physics 325/6/1906, pp. 174-95, doi: 10.1002/andp.19063250611, online via Gallica ( Bibliothèque nationale de France )
  • Regristrierung the specific conductance of the atmospheric air. News from the Society of Sciences in Göttingen, Mathematics and Physical class? /? / 1908, Vol.2, Issue 1, pp. 102-20. Online at Göttingen Digitization Center
  • A sensitive Vibrationsgalvanometer for low frequencies. Arch. f elt. 01.06.1912 S. 254-8, doi: 10.1007/BF01657493
  • The measurement of the phase angle large wirewound resistors made by comparison with mannitol -boric acid solution. Arch. f elt. 10.01.1913, p 423-32, doi: 10.1007/BF01657352
  • A simple method for testing of current transformers. Arch. f elt. 07.02.1914, pp. 263-75, doi: 10.1007/BF01655998
  • For diagram of the CT. Arch. f elt. 07.02.1918, pp. 47-56, doi: 10.1007/BF01578769
  • Report on the work of Bussmann on the inclusion of the phase shift in consumption measurements in three-phase networks. Electrotechnical Journal, 1919, p 304
  • The heating of a cable by dielectric losses. Arch. f elt. 2/11/1922, pp. 68-76, doi: 10.1007/BF01656438
  • A sensitivity control for zero instruments. Arch. f elt. 6-12/12/1923, pp. 493-7, doi: 10.1007/BF01656760
  • The angular error in induction meters. Arch. f elt. 6-12/12/1923, pp. 511-26, doi: 10.1007/BF01656762
  • The insulation of electrical engineering. Berlin: Springer, 1924, doi: 10.1007/978-3-642-99077-9
  • Comments on the article of Mr. G. Benischke: A simple bridge for measuring the capacitance and the loss resistance. Arch. f elt. 4/17/1926, pp. 426-8, doi: 10.1007/BF01662007
  • Emil Warburg and technology. Naturwiss. 11.14.1926, pp. 208-11, doi: 10.1007/BF01510296
  • The sensitivity of an AC bridge. ETZ 36/52/1931, pp. 1133-4 and 38/52/1931 P. 1191
  • For measurement of the stress distribution on insulator surfaces. ETC 4/56/1935, pp. 75-80 (?)
  • The inductance of two straight parallel conductors with same rectangular cross-sections. ETZ -A, 10/-/1954, p.335 -8
Hanover Julius Elster Dissipation factor Digital Object Identifier Neue Deutsche Biographie Integrated Authority File
375272
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