Niels Bjerrum (original) (raw)
Niels Janniksen Bjerrum, nascut a Copenhaguen l'11 de març de 1879 i mort a Copenhaguen el 30 de setembre de 1958, va ser un important químic danès que destacà en el camp de la química de coordinació.
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| dbo:abstract | Niels Janniksen Bjerrum, nascut a Copenhaguen l'11 de març de 1879 i mort a Copenhaguen el 30 de setembre de 1958, va ser un important químic danès que destacà en el camp de la química de coordinació. (ca) Niels Janniksen Bjerrum (* 11. März 1879 in Kopenhagen; † 30. September 1958 ebenda) war ein dänischer Chemiker. Er leistete bedeutende Beiträge zur Elektrochemie, zur Theorie von Säure und Basen, der Messung von Protonenkonzentrationen und dem Verhalten von Indikatoren. (de) Niels Janniksen Bjerrum (11 March 1879 in Copenhagen – 30 September 1958) was a Danish chemist. Niels Bjerrum was the son of ophthalmologist Jannik Petersen Bjerrum, and started to study at University of Copenhagen in 1897. He received his Master's degree in 1902 and his Doctor's degree in 1908, and did research in coordination complex chemistry under Sophus Mads Jørgensen. He became a docent in 1912, and in 1914 he became professor of chemistry at the Royal Agricultural College (Landbohøjskolen) in Copenhagen, as successor of . He stayed on this post until his retirement in 1949, and from 1939 to 1946 he was also the Director of the College. Importantly, Bjerrum introduced the concept of three forms of molecular energy, translational, vibrational and rotational which was important in understanding vibrational spectroscopy. He is also noted for the theory behind the Bjerrum length, and the Bjerrum plot. Bjerrum also performed some of the first research on the measurement of soil acidity. His son Jannik Bjerrum (1909–1992) also became a chemist and was active in the area of complex chemistry. (en) Niels Bjerrum (ur. 1879, zm. 1958) – duński fizykochemik. Od 1914 profesor uniwersytetu w Kopenhadze i Królewskiego Instytutu Weterynaryjno-Rolniczego. Główne jego prace dotyczyły roztworów elektrolitów i związków kompleksowych. Opracował teorię alkacymetrii i mocnych elektrolitów, był też autorem podręczników. (pl) Niels Janniksen Bjerrum, född 11 mars 1879 i Köpenhamn, död 30 september 1958, var en dansk kemist. Han var son till ögonläkaren Jannik Petersen Bjerrum. Bjerrum blev professor i kemi vid Landbohöjskolen i Köpenhamn 1914. Hans tidigaste arbeten berör oorganiska komplexföreningars sammansättning och omvandlingar, såsom hans doktorsavhandling från 1908, Studier over basiske Kromforbindelser. Hans senare forskning rörde huvudsakligen den fysikaliska kemin, men han bedrev även forskning inom atomfysiken. Han skrev bland annat ett uppmärksammat verk om titrering av syror och baser år 1914, men är mest känd för sina teorier om starka elektrolyters dissociation i vattenlösning, framlagd vid en naturforskarkongress i Kristiania 1916. Fenomenet Bjerrumlängd är uppkallat efter honom. Bjerrum invaldes 1945 som utländsk ledamot av svenska Ingenjörsvetenskapsakademien. (sv) |
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| rdfs:comment | Niels Janniksen Bjerrum, nascut a Copenhaguen l'11 de març de 1879 i mort a Copenhaguen el 30 de setembre de 1958, va ser un important químic danès que destacà en el camp de la química de coordinació. (ca) Niels Janniksen Bjerrum (* 11. März 1879 in Kopenhagen; † 30. September 1958 ebenda) war ein dänischer Chemiker. Er leistete bedeutende Beiträge zur Elektrochemie, zur Theorie von Säure und Basen, der Messung von Protonenkonzentrationen und dem Verhalten von Indikatoren. (de) Niels Bjerrum (ur. 1879, zm. 1958) – duński fizykochemik. Od 1914 profesor uniwersytetu w Kopenhadze i Królewskiego Instytutu Weterynaryjno-Rolniczego. Główne jego prace dotyczyły roztworów elektrolitów i związków kompleksowych. Opracował teorię alkacymetrii i mocnych elektrolitów, był też autorem podręczników. (pl) Niels Janniksen Bjerrum (11 March 1879 in Copenhagen – 30 September 1958) was a Danish chemist. Niels Bjerrum was the son of ophthalmologist Jannik Petersen Bjerrum, and started to study at University of Copenhagen in 1897. He received his Master's degree in 1902 and his Doctor's degree in 1908, and did research in coordination complex chemistry under Sophus Mads Jørgensen. He became a docent in 1912, and in 1914 he became professor of chemistry at the Royal Agricultural College (Landbohøjskolen) in Copenhagen, as successor of . He stayed on this post until his retirement in 1949, and from 1939 to 1946 he was also the Director of the College. (en) Niels Janniksen Bjerrum, född 11 mars 1879 i Köpenhamn, död 30 september 1958, var en dansk kemist. Han var son till ögonläkaren Jannik Petersen Bjerrum. Bjerrum blev professor i kemi vid Landbohöjskolen i Köpenhamn 1914. Hans tidigaste arbeten berör oorganiska komplexföreningars sammansättning och omvandlingar, såsom hans doktorsavhandling från 1908, Studier over basiske Kromforbindelser. Bjerrum invaldes 1945 som utländsk ledamot av svenska Ingenjörsvetenskapsakademien. (sv) |
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