Emil Borraß
Emil Gustav Adolf Borraß (born February 22, 1856 in Forsthaus Büssen ( Marienwerder district ), † November 16, 1930 in Potsdam ) was a German geodesist .
Life
Emil Borraß worked 1881-1917 with Johann Jacob Baeyer and Friedrich Robert Helmert at the Royal Prussian Geodetic Institute and from 1917 with Louis Krüger at the Prussian Geodetic Institute in Potsdam , initially as an assistant and from 1901 to 1921 as head of department and professor. During this time he worked as a computer and observer in determining length, pole height, azimuth and, in particular, gravity.
With the publication of his report on the relative measurements of gravity with pendulum apparatus in the period of 1908/09 and their representation in the Potsdam gravity system, Emil Borrass introduced the Potsdam system as the first internationally used gravity reference system that defines an absolute gravity level and one between 1909 and 1971 had international importance as a reference with high accuracy for gravimetric gravity values.
On December 17, 1917, Emil Gustav Adolf Borraß was accepted as a member ( matriculation number 3398 ) in the Leopoldina .
Fonts
- Determination of the pole height and the intensity of gravity at two and twenty stations. Stankiewicz, Berlin 1896
- Relative determinations of the intensity of gravity on the stations Bucharest, Tiglina near Galatz, Vienna, Charlottenburg and Pulkowa in connection with Potsdam. Stankiewicz, Berlin 1905
- Report on the relative measurements of gravity with pendulum apparatus in the period from 1808 to 1909 and on their representation in the Potsdam gravity system. Negotiations of the Sixteenth General Conference on International Geometric Surveying, held in London and Cambridge in 1909. III. Part: Special report on the relative gravity measurements. Reimer, Berlin 1911
literature
- Friedrich Kühnen and Philipp Furtwängler : Determination of the absolute magnitude of gravity in Potsdam with reversion pendulums. Publication of the Royal Prussian Geodetic Institute, New Series No. 27, Berlin 1906
- Karl Reicheneder: Borraß, Emil. In: New German Biography (NDB). Volume 2, Duncker & Humblot, Berlin 1955, ISBN 3-428-00183-4 , p. 473 ( digitized version ).
Web links
- Member entry of Emil Gustav Adolf Borraß (with picture) at the German Academy of Natural Scientists Leopoldina , accessed on April 24, 2018.
| personal data | |
|---|---|
| SURNAME | Borraß, Emil |
| ALTERNATIVE NAMES | Borraß, Emil Gustav Adolf (full name) |
| BRIEF DESCRIPTION | German geodesist |
| DATE OF BIRTH | February 22, 1856 |
| PLACE OF BIRTH | Forsthaus Büssen ( Marienwerder District ) |
| DATE OF DEATH | November 16, 1930 |
| Place of death | Potsdam |