Friedrich Ernst Dorn
Friedrich Ernst Dorn ( born July 27, 1848 in Guttstadt, Warmia, † December 6, 1916 in Halle ( Saale) ) was a German physicist.
Life and work
Friedrich Ernst Dorn was the son of a pharmacist Adolf Hermann Dorn and his wife Johanna Wilhelmine born Lottermoser. Friedrich Ernst Dorn was married to Anna née Hertz.
Dorn went from 1857 to 1865 in Königsberg on the gymnasium and studied from 1865 to 1869 mathematics, science, philosophy and French at the University of Königsberg. In 1869 he passed the teacher checks for grammar schools. After sample years at his old high school in Königsberg and Berlin, he became an assistant teacher in 1871 at the Royal Wilhelm Gymnasium in Berlin while at the same time in Königsberg in mathematics doctorate ( topic was the transformation of elliptic integrals).
In 1873 he completed his habilitation at the University of Greifswald in mathematics and physics. Also in 1873 he became an associate professor at the University of Breslau and then from 1881 as full professor at the TH Darmstadt.
Dorn in 1885 full professor of experimental physics at the University of Halle as a successor of Anton Oberbeck ( 1846-1900 ). In 1895, he was the successor of Hermann garlic Director of the Physics Institute at the University of Halle.
Dorn looked at the then current research radioactivity and X-rays as well as with liquid crystals. He discovered in 1900 the radioactive gas radon. He studied the decay of radium in mass particles, when he discovered the radioactive gas. He gave him the name of radium emanation ( " from radium out going" ). Furthermore, he devoted himself precision provisions electrical units and examined with instruments he developed the atmospheric electricity. He made himself unpopular in the city because he felt hindered in its precision experiments by the electric tram in hall and wanted to ban them.
In 1895 he became a member of the German Academy of Sciences Leopoldina. He received several high order of merit as the Knight's Cross 1st Class of the Bavarian Order of Merit of St. Michael. Furthermore, Dorn was appointed on December 20, 1906 to the Privy Councillor.
Manuscripts of mandrel can be found at the State Library in Berlin in the Department of Manuscripts and at the Lower Saxony State and University Library Göttingen.
Works
- Shape and number of representatives of non-equivalent classes of the transformation of the ultra- elliptic functions, Habilitation Thesis, Greifswald 1873
- Apparatus for the study of atmospheric electricity, 1886
- Proposals for statutory provisions on electrical Maass units: designed by the Curatorium the Physikalisch-Technische Reich Institute; together with a critical report About the probable value of the ohm according to previous measurements. Berlin: Springer, 1893.