Friedrich Risner

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Risner's grave slab in the Bad Hersfeld monastery ruins

Friedrich Risner (* around 1533 in Hersfeld ; † September 15, 1580 there ) was a mathematician .

Life

Friedrich Risner was born around 1533. He was a student of Petrus Ramus and was the first to hold the chair of mathematics at the Collège Royale de France in Paris.

Risner published Opticae thesaurus in 1572 : Alhazeni Arabis libri septem, nuncprimum editi; Eiusdem liber De Crepusculis et nubium ascensionibus , a Latinized translation of the works of Ibn al-Haitham and Erazmus Ciolek Witelo , both of whom were early pioneers in the field of optics. Risner's publication had a major impact on the mathematicians of his day. These included Johannes Kepler , Christiaan Huygens , and René Descartes .

Risner is credited with building the first portable camera obscura .

After Bartholomew's Night, Risner fled back to Hersfeld and died there at the age of 47. He was buried in the Bad Hersfeld collegiate church . His tombstone still exists there in good condition. The Latin transcription reads:

“Anno Domini 1580. 17th Cal. Octob. pie in Christo obiit clariss. vir Fridericus Risner insignis et praestantissimus Mathematicus qui hic terrae mandatus sonitum tubae expectat aetatis suae 47 ”

"In the year of the Lord 1580 on September 15, the very famous Friedrich Risner died in Christ at the age of 47, an excellent and outstanding mathematician, who awaits the sound of the trumpet to be handed over to earth"

The Risner family coat of arms can be seen in the lower part of the tombstone.

Works

  • Friedrich Risner (Ed.): Opticae thesaurus . Basel, 1572; with introduction by David Lindberg, NY: Johnson Reprint, 1972

literature

Individual evidence

  1. ↑ also mentioned in Topographia Hassiae by Merian
  2. ↑ galileo.rice.edu
  3. ↑ acmi.net.au ( Memento of the original from March 3, 2004) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.acmi.net.au
  4. ↑ According to the Roman calendar, 17th Cal. October. September 15th according to the Julian calendar
personal data
SURNAME Risner, Friedrich
BRIEF DESCRIPTION German mathematician
DATE OF BIRTH around 1533
PLACE OF BIRTH Hersfeld
DATE OF DEATH September 15, 1580
Place of death Hersfeld