Lemstrom Karl - Selim
(17.11.1838 - 02.10.1904)
Finnish geophysicist, professor at the University of Helsingfors.
Born in Inkoo in southern Finland, he studied at the school in Helsingfors, then in the gymnasium in Borgo, in 1857 he entered the university.
After completing the course at the university in 1862 Lemstrom taught until 1867 at the Helsingfors schools, and then went to Stockholm, where he worked under the guidance of the famous professor Edlund.
In 1868 Lemstrom participated in the Nordensheld polar expedition to Spitsbergen, where he began his observations on the northern lights and earthly magnetism; the study of these phenomena was then the main content of his scientific activities. After defending his thesis on "The Causes of Terrestrial Magnetism", Lemstrom was elected a university professor. Numerous observations of the northern lights on Svalbard in 1868 and in Finnish Lapland (1871–1872) allowed him to connect them with electric currents in the atmosphere.
However, in 1882–1884 Within the framework of the first International Polar Year, Lemström performed numerous spectroscopic analyzes and found that this phenomenon cannot be caused by an electric current in the atmosphere. These experiments are considered to be his greatest contribution to the study of auroras. Some of the theories of Lemsstra were later tested by the Norwegian scholar Christian Birkeland.
He died in Helsinki.
The northernmost island in the Waigat archipelago in the Hinlopen Strait, Spitsbergen. The coordinates are 79° 20'N 19° 30'E.
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