Hans Rosenberg (physicist)

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In Rosenberg's time, the observatory on the northeast tower of the Tübingen Castle was no longer up to date
Hans Rosenberg's private observatory next to his house at Hauffstrasse 20 in Tübingen
Rosenberg's private observatory in Hauffstrasse on the Österberg in Tübingen

Hans Rosenberg (born March 18, 1879 in Berlin , † July 26, 1940 in Istanbul ; full name Hans Oswald Rosenberg ) was a German physicist and astronomer .

Hans Rosenberg was the son of the bank director Hermann Rosenberg (1847–1917) and Elisabeth "Else" née Dohm. His grandmother was the writer and women's rights activist Hedwig Dohm (1831-1919). He passed the Abitur at the Wilhelms-Gymnasium in Berlin and studied natural sciences, especially astronomy. In 1905 he received his doctorate from the University of Strasbourg under the professor of astronomy Ernst Becker . In 1907 he became a volunteer with Karl Schwarzschild at the University of Göttingen. Rosenberg completed his habilitation in Tübingen in 1910 as the first physicist in astronomy .

In addition to his teaching activities, he became head of the outdated observatory at Tübingen Castle. In a private observatory that he set up , he developed new methods of photometry . His observatory had a 4.5 m observation dome and was equipped with an apochromat with a 13 cm aperture and 2.4 m focal length. Rosenberg determined the moon's albedo there and developed new methods for measuring star brightness .

In 1926 he was appointed full professor to Kiel , where the expansion of the university observatory was pushed ahead on his initiative . In 1927 and 1929 he undertook solar eclipse expeditions to northern Sweden and Siam . Although he was considered a Jew under the National Socialist Law to Restore the Civil Service , he was initially able to continue teaching because he had fought in the First World War. In March 1934 he was allowed to travel abroad to the United States , but he never returned to Germany. From 1934 to 1937 Rosenberg taught at the University of Chicago . In 1938 he emigrated to Turkey and taught there as the successor to Erwin Freundlich at the University of Istanbul until his death.

Rosenberg was married to Verena "Vera", née Borchardt (1882–1954), with whom he had five children. The oldest was the German-Swiss journalist and writer Eva Maria Borer (1905–1987).

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  1. ↑ Österberg Observatory in Tübingen (1911-1925) ( Memento from July 27, 2012 in the Internet Archive )
personal data
SURNAME Rosenberg, Hans
ALTERNATIVE NAMES Rosenberg, Hans Oswald
BRIEF DESCRIPTION German physicist and astronomer
DATE OF BIRTH March 18, 1879
PLACE OF BIRTH Berlin
DATE OF DEATH July 26, 1940
Place of death Istanbul