Rasmus Bartholin

Rasmus Bartholin , or Erasmus Berthelsen, born with Roskilde on August 13rd, 1625, † with Copenhagen on November 4th, 1698, was a Danish doctor who studied the Biréfringence Iceland spar.

Wire of the doctor Caspar Berthelsen, he studied itself medicine but was interested mainly in the geometry. To improve its knowledge, he travelled to Italy and France where he bound with the astronomer Jean Picard. Following this meeting, the French academician will do itself a stay in Denmark with the invitation of Bartholin.

Bartholin taught thereafter mathematics and medicine at the university of Copenhagen, from which he became the senior.

Works

Of problematibus mathematicis tractatus (1664), Copenhagen
Tried out crystalli islandici disdiaclastici (1669), 1 vol. in-4°, Copenhagen.

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