Daniel Isaachsen (physicist), Date of Birth, Date of Death
TweetDaniel Isaachsen (physicist)
Norwegian physicist
Date of Birth: 
About Daniel Isaachsen (physicist)
- Daniel Isaachsen (23 June 1859 – 29 March 1940) was a Norwegian physicist. He was born in London as the son of military officer Isak Tobias Isaachsen and Fredrikke Andrea Rude.
- He was a great-grandson of Isaach Isaachsen, brother of scientist Haakon Isaachsen and scientist Isak Isaachsen, nephew of painter Olaf Isaachsen and cousin of painter Herman Willoch and naval officer Odd Isaachsen Willoch.
- In 1861 he married Asta Lie, a daughter of Jonas Lie.He finished his education in 1877 and graduated from university with the cand.real.
- degree in 1883.
- He started his career as an assistant at the International Bureau of Weights and Measures, where he stayed from 1889, interrupted by a period in Berlin from 1886 to 1887.
- He was hired as a research fellow at the Royal Frederick University in 1889, and from 1891 he worked as a teacher and lecturer.
- He first worked at Trondhjem Technical School from 1891 to 1893, then at the Norwegian Naval Academy from 1893.
- He directed the Norwegian Metrology Service from 1914 to 1929.He was a member of the Norwegian Academy of Science and Letters.
- He wrote textbooks like Lærebog i fysik for realgymnasiet og tekniske skoler (first time in 1903, from 1909 together with Gabriel Gabrielsen Holtsmark), and popular science books like Elektriciteten: en populær fremstilling from 1897.
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