Gumlich, Ernst Carl Adolph

1859 - 1930  (70 years)

• Name	Gumlich, Ernst Carl Adolph  [1, 2]
  Birth	23 Apr 1859	Ahorn, Coburg, Bayern, Germany   [1, 2]
  Gender	Male
  Occupation	Doctor of Philosophy, Professor at the Imperial Physics and Technical Institute in Charlottenburg  [1]
  Death	12 Feb 1930	Berlin, Berlin, Berlin, Germany   [2]
  Burial	Aft 12 Feb 1930	Stahnsdorf, Potsdam-Mittelmark, Brandenburg, Germany   [2]
  	Standsdorf Cemetery
  Person ID	I29214	The Thoma Family
  Last Modified	20 Sep 2023

  
  

  Father	Gumlich, Friedrich Ernst August,   b. 19 Feb 1814, Coburg, Bayern, Germany d. 5 May 1892, Coburg, Bayern, Germany (Age 78 years)
  Relationship	natural
  Mother	Trischler, Sophie Benigna,   b. 1827, Cannstatt, Stuttgart, Baden-Württemberg, Germany d. DECEASED, Germany
  Relationship	natural
  Marriage	25 Jul 1850	Heldritt, Coburg, Bayern, Germany   [1, 3]
  Family ID	F11087	Group Sheet  |  Family Chart

  
  

  Family	Heyn, Else,   b. 1862, Gdansk, Pomorskie, Poland d. DECEASED, Germany
  Marriage	UNKNOWN	Germany   [1]
  Children	1. Gumlich, Walter,   b. 1891, Berlin, Berlin, Berlin, Germany d. DECEASED  [natural]   2. Gumlich, Lily,   b. 1893, Berlin, Berlin, Berlin, Germany d. DECEASED  [natural]   3. Gumlich, Hans,   b. 1896, Berlin, Berlin, Berlin, Germany d. DECEASED  [natural]
  Family ID	F11088	Group Sheet  |  Family Chart
  Last Modified	20 Sep 2023

  
  

• Event Map

  Birth - 23 Apr 1859 - Ahorn, Coburg, Bayern, Germany Death - 12 Feb 1930 - Berlin, Berlin, Berlin, Germany Burial - Aft 12 Feb 1930 - Stahnsdorf, Potsdam-Mittelmark, Brandenburg, Germany Marriage - UNKNOWN - Germany  = Link to Google Earth

  
  

• Notes

  Ernst Gumlich Ernst Carl Adolph Gumlich (born April 23, 1859 in Maple , † February 12, 1930 in Berlin ) was a German physicist . His father Johann Karl Ernst Gumlich (* 1816) was pastor in Heldritt and Ahorn and from 1868 Oberpfarrer of Neustadt. From Easter 1878 he studied physics , mathematics and natural sciences in Jena , Tübingen and Berlin. In 1883 he passed the senior teacher exam in Berlin and in 1885 he received his doctorate in Jena for the "Theory of Newtonian color rings in the continuous light". From 1887 he was an employee at the Physikalisch Technische Reichsanstalt in Berlin. In 1898 he became professor and director of the local magnetic laboratory. He was appointed a secret government councilor. Gumlich mainly investigated magnetic materials in the case of alternating magnetization, such as the course of the eddy current and hysteresis losses . He also developed measurement methods for magnetic properties such as the yoke-isthmus method and improved the Epstein method . He recognized the parallelism of the ferromagnetic properties, especially with the electrical conductivity . In the summer of 1900, he discovered that even a small addition of silicon in the iron multiplied the electrical resistivity and thus the eddy current losses could be significantly reduced , with the same magnetic properties . [1] He suggested the rolling mills for producing alloy sheets ( dynamo sheet on). [2] Gumlich's grave is located on the southwestern cemetery Stahnsdorf .

  
  

• Sources

  [S24] GERMANY: THÜRINGIA: Schriften des Vereins fur Sachsen Meiningische Geschichte und Landeskunde 54th issue (1906). Google Books Issue 54, Hildburghausen, Saxe-Meiningen: F. W. Gadow & Sohn 1906 https://babel.hathitrust.org/cgi/pt?id=mdp.39015055036332;view=1up;seq=111 Schriften des Vereins für Sachsen Meiningische Geschichte und Landeskunde 54th issue (1906) Klipper Family Tree [S788] WORLD: Wikipedia. https://www.wikipedia.org/ [S1469] GERMANY: BAYERN: Pfarrerbuch Book 9 Sachsen - Coburg. Pfarrerbuch Book 9 Sachsen-Coburg