CHRISTOPHER HANSTEEN (26 September 1784 – 11 April 1873) was a Norwegian geophysicist , astronomer and physicist , best known for his mapping of Earth\'s magnetic field .
* 1 Early life and career * 2 Academic career * 3 Later life * 4 Awards and legacy * 5 See also * 6 References
EARLY LIFE AND CAREER
Hansteen was born in Christiania as the son of Johannes Mathias Hansteen (1744–1792) and his wife Anne Cathrine Treschow (1754–1829). He was the younger brother of writer Conradine Birgitte Dunker , and through her the uncle of Bernhard Dunker and Vilhelmine Ullmann , and granduncle of Mathilde Schjøtt , Ragna Nielsen and Viggo Ullmann . His mother was a first cousin of Niels Treschow .
The intention was for Hansteen to become a naval officer, but since
his father died when Hansteen was young, this plan did not
materialize. Instead, he attended
In 1807 Hansteen began the inquiries in terrestrial magnetism with
which his name is especially associated. His first scientific
publication was printed in Journal de Physique, following a contest on
magnetic axes created in 1811 by the Royal Danish Academy of Sciences
and Letters . In 1813 he was given a research scholarship by the
recently established (in 1811) Royal Frederick University in
Christiania, with a promise of a future academic position. After
marrying Johanne Cathrine Andrea Borch in May 1814, they left for
Working as a lecturer from 1814, in 1816 Hansteen was promoted to professor of astronomy and applied mathematics. He was the editor of the official Norwegian almanac from 1815, manager of the city astronomical observatory from the same year and co-director of the Norwegian Mapping Authority (then known as Norges Geografiske Oppmåling) from 1817. In 1819 he published a volume of researches on terrestrial magnetism, which was translated into German under the title of Untersuchungen über den Magnetismus der Erde, with a supplement containing Beobachtungen der Abweichung und Neigung der Magnetnadel and an atlas. By the rules there framed for the observation of magnetical phenomena Hansteen hoped to accumulate analyses for determining the number and position of the magnetic poles of the Earth. In 1822 he co-founded Norway's first journal on natural sciences, Magazin for Naturvidenskaberne. He sat as editor-in-chief for eight years.
In the course of his research he travelled over
From 1835 to 1838 he published textbooks on geometry and mechanics , largely a reaction to his former research assistant Bernt Michael Holmboe 's textbooks. Compared to Holmboe's method of teaching, Hansteen's books were more practically oriented. After Holmboe wrote a review of the first textbook for the newspaper Morgenbladet , in which he advised schools not to use it, a public debate followed, with contributions from other mathematicians. It has been claimed that this was the first debate on the subject of school textbooks in Norway. Holmboe's textbooks proved more lasting, with Hansteen's textbook not being reprinted. In 1842 Hansteen wrote his Disquisitiones de mutationibus, quas patitur momentum acus magneticae. He also contributed various papers to different scientific journals, especially Magazin for Naturvidenskaberne.
Hansteen was a member of the Royal Norwegian Society of Sciences and
Letters from 1818 and of the Norwegian Academy of Science and Letters
from 1857, as well as several learned societies in other countries,
Royal Swedish Academy of Sciences
For health reasons, Hansteen stopped holding lectures in 1856. In 1861 he retired from active work, but still pursued his studies, his Observations de l'inclination magnetique and Sur les variations séculaires du magnetisme appearing in 1865. He left the position as observatory manager in 1861 as well, but continued as editor of the Norwegian almanac until 1863 and as director of the Norwegian Mapping Authority until 1872.
His wife died in 1840. Their daughter
AWARDS AND LEGACY
Hansteen was appointed a Commander of the Royal Norwegian Order of St. Olav in 1847, and received the Grand Cross in 1855. He was also appointed a Grand Cross of the Order of the Dannebrog and a Commander Grand Cross of the Order of the Polar Star , as well as other foreign orders of knighthood. A bust of Hansteen was raised at his observatory in the 1850s. Christopher Hansteens vei.
The crater Hansteen and the mountain
* ^ Chisholm, Hugh, ed. (1911). "Hansteen, Christopher".
Encyclopædia Britannica (11th ed.). Cambridge University Press.
* ^ A B C D E F G H I J K L Stubhaug, Arild (2001). "Christopher
Hansteen". In Helle, Knut .
Norsk biografisk leksikon
* WorldCat Identities * VIAF : 15520384 * LCCN : n2005014292 * ISNI : 0000 0000 8200 4662 * GND : 116461357 * SUDOC : 158472683 * BNF : cb16984930k (data) * BIBSYS : 90712173 * NLA : 36001761 * IATH