Rasmus Bartholin

From Wikipedia, the free encyclopedia

Rasmus Bartholin
Rasmus Bartholin
Born	13 August 1625 Roskilde
Died	4 November 1698 (aged 73) Copenhagen
Nationality	Danish
Fields	Physics
Known for	double refraction of a light ray

Rasmus Bartholin (Latinized Erasmus Bartholinus; 13 August 1625 – 4 November 1698) was a Danish scientist and physician. As part of his studies, he travelled in Europe for ten years. Professor at the University of Copenhagen, first in Geometry, later in Medicine. He was a younger brother of Thomas Bartholin.

Rasmus Bartholin is remembered especially for his discovery (1669) of the double refraction of a light ray by Iceland spar (calcite).^[1] He published an accurate description of the phenomenon, but since the physical nature of light was poorly understood at the time, he was unable to explain it. It was only after Thomas Young proposed the wave theory of light, c. 1801 that an explanation became possible.

References

↑ Erasmus Bartholin, Experimenta crystalli islandici disdiaclastici quibus mira & insolita refractio detegitur (Copenhagen ("Hafniæ"), Denmark: Daniel Paulli, 1669). English translation: Experiments with the double refracting Iceland crystal which led to the discovery of a marvelous and strange refraction, tr. by Werner Brandt. Westtown, Pa., 1959.

External links

"De figura nivis". In Thomas Bartolin, De nivis usu medico observationes variae. Accessit D. Erasmi Bartholini de figura nivis dissertatio, p. PA241, at Google Books. Copenhagen: P. Haubold, 1661
O'Connor, John J.; Robertson, Edmund F., "Erasmus Bartholin", MacTutor History of Mathematics archive, University of St Andrews .
http://www.experiencefestival.com/erasmus_bartholinus/articleindex
http://www.britannica.com/EBchecked/topic/54330/Erasmus-Bartholin
http://www.worldcat.org/identities/lccn-n93-3891
http://www-history.mcs.st-and.ac.uk/Biographies/Bartholin.html

Authority control	WorldCat VIAF: 31992524 LCCN: n93003891 ISNI: 0000 0000 8342 6701 GND: 119105241 BNF: cb11890430k MGP: 62171

Persondata
Name	Bartholin, Rasmus
Alternative names
Short description
Date of birth	13 August 1625
Place of birth	Roskilde
Date of death	4 November 1698
Place of death	Kopenhagen

This article is issued from Wikipedia. The text is available under the Creative Commons Attribution/Share Alike; additional terms may apply for the media files.