Adam Frederik Oluf Arndtsen (15 December 1829 – 7 August 1919) was a Norwegian physicist.
In 1859 he lost out to Hartvig Caspar Christie in a competition to succeed Lorentz Christian Langberg as an academic of physics at the Royal Frederick University. He later became the first director of the Norwegian Metrology Service, serving from 1875 to 1914. From 1900 to 1914 he also represented Norway in the International Bureau of Weights and Measures.
- Holtsmark, G. (1926). "Christie, Hartvig Caspar". In Bull Edvard; Jansen, Einar. Norsk biografisk leksikon (in Norwegian) 3 (1st ed.). Oslo: Aschehoug. pp. 7–9.
- Henriksen, Petter, ed. (2007). "Adam Frederik Oluf Arndtsen". Store norske leksikon (in Norwegian). Oslo: Kunnskapsforlaget. Retrieved 29 November 2009.
|Director of the Norwegian Metrology Service
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