Jäderin, Edvard

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Jäderin, Edvard

Born Mar. 5, 1852, in Stockholm; died Nov. 24, 1923. Swedish astronomer and geodesist.

Jäderin was a professor of topography and geodesy at the Stockholm Higher Technical School (from 1878) and a university professor at Uppsala (from 1907). In 1898 he headed a preliminary expedition to Spitsbergen to make preparations for arc and angle measurements, and from 1899 to 1902 he directed the Swedish party of a joint Russo-Swedish expedition that conducted geodetic, topographical, and astronomical research in Spitsbergen. In 1880 he invented a base line instrument for measuring the bases of triangulation; the instrument consisted of wires with scales suspended under constant tension from special mounts.

REFERENCE

Geodäsische Längenmessung mit Stahlbändern und Metalldrähten. Stockholm, 1884–85. (Kongliga Svenska vetenskaps-akademiens handlingar, Bihang til, vol. 9, no. 15.)

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