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- Friedrich_Risner abstract "Friedrich Risner (c.1533 – 15 September 1580) was a German mathematician from Hersfeld [1], Hesse. He was an assistant to Petrus Ramus (from around 1565) and was the first chair of mathematics at Collège Royale de France (1576).Risner is known for his 1572 publication of \"Opticae thesaurus: Alhazeni Arabis libri septem, nuncprimum editi; Eiusdem liber De Crepusculis et nubium ascensionibus, Item Vitellonis Thuringopoloni libri X\", an edition of works by Ibn al-Haitham and Erazmus Ciolek Witelo, two men who were both early pioneers in the field of optics. The publication became a major benefit to a number of mathematicians and scientists, such as Kepler, Huygens, and Descartes.He was the first to propose the idea of a portable camera obscura, which purportedly was to be used as an aid in the creation of artistic works. His idea consisted of a lightweight wooden hut that had small holes fitted with lenses in each wall, and a cube of paper placed in the centre for drawing.After St. Bartholomew's Day massacre, Risner fled back to Hersfeld and died there eight years later. Risner was buried in Hersfeld Abbey, where his gravestone is well preserved.The Latin circumscription on the gravestone is: \"Anno Domini 1580. 17. Cal. Octob. pie in Christo obiit clariss. vir Fridericus Risner insignis et praestantissimus Mathematicus qui hic terrae mandatus sonitum tubae expectat aetatis suae 47.\"English translation of the inscription above is: \"In year 1580 at 15th of September, died in Christ at the age of 47, the well famous Friedrich Risner, an outstanding, excellent mathematician, who passed to soil here, will expect the sound of trumpet.\"".
- Friedrich_Risner birthPlace Bad_Hersfeld.
- Friedrich_Risner deathDate "1580-09-15".
- Friedrich_Risner deathPlace Bad_Hersfeld.
- Friedrich_Risner deathYear "1580".
- Friedrich_Risner thumbnail Hersfeld_frisner_gravestone.jpg?width=300.
- Friedrich_Risner wikiPageExternalLink De_Merian_Hassiae_128.jpg.
- Friedrich_Risner wikiPageExternalLink history.htm.
- Friedrich_Risner wikiPageID "6733941".
- Friedrich_Risner wikiPageLength "3084".
- Friedrich_Risner wikiPageOutDegree "22".
- Friedrich_Risner wikiPageRevisionID "676460066".
- Friedrich_Risner wikiPageWikiLink Alhazen.
- Friedrich_Risner wikiPageWikiLink Bad_Hersfeld.
- Friedrich_Risner wikiPageWikiLink Camera_obscura.
- Friedrich_Risner wikiPageWikiLink Category:1580_deaths.
- Friedrich_Risner wikiPageWikiLink Category:16th-century_German_mathematicians.
- Friedrich_Risner wikiPageWikiLink Category:Collège_de_France_faculty.
- Friedrich_Risner wikiPageWikiLink Category:Opticians.
- Friedrich_Risner wikiPageWikiLink Category:People_from_Hesse.
- Friedrich_Risner wikiPageWikiLink Category:Year_of_birth_uncertain.
- Friedrich_Risner wikiPageWikiLink Christiaan_Huygens.
- Friedrich_Risner wikiPageWikiLink Collège_de_France.
- Friedrich_Risner wikiPageWikiLink Germans.
- Friedrich_Risner wikiPageWikiLink Hersfeld_Abbey.
- Friedrich_Risner wikiPageWikiLink Hesse.
- Friedrich_Risner wikiPageWikiLink Johannes_Kepler.
- Friedrich_Risner wikiPageWikiLink Mathematician.
- Friedrich_Risner wikiPageWikiLink Optics.
- Friedrich_Risner wikiPageWikiLink Petrus_Ramus.
- Friedrich_Risner wikiPageWikiLink René_Descartes.
- Friedrich_Risner wikiPageWikiLink St._Bartholomews_Day_massacre.
- Friedrich_Risner wikiPageWikiLink Witelo.
- Friedrich_Risner wikiPageWikiLink File:Hersfeld_frisner_gravestone.jpg.
- Friedrich_Risner wikiPageWikiLinkText "Friedrich Risner".
- Friedrich_Risner wikiPageWikiLinkText "Risner, Friedrich".
- Friedrich_Risner dateOfDeath "1580-09-15".
- Friedrich_Risner name "Risner, Friedrich".
- Friedrich_Risner placeOfBirth "Hersfeld".
- Friedrich_Risner placeOfDeath "Hersfeld".
- Friedrich_Risner shortDescription "German mathematician".
- Friedrich_Risner wikiPageUsesTemplate Template:Authority_control.
- Friedrich_Risner wikiPageUsesTemplate Template:Persondata.
- Friedrich_Risner wikiPageUsesTemplate Template:Reflist.
- Friedrich_Risner description "German mathematician".
- Friedrich_Risner description "German mathematician".
- Friedrich_Risner subject Category:1580_deaths.
- Friedrich_Risner subject Category:16th-century_German_mathematicians.
- Friedrich_Risner subject Category:Collège_de_France_faculty.
- Friedrich_Risner subject Category:Opticians.
- Friedrich_Risner subject Category:People_from_Hesse.
- Friedrich_Risner subject Category:Year_of_birth_uncertain.
- Friedrich_Risner hypernym Mathematician.
- Friedrich_Risner type Agent.
- Friedrich_Risner type Person.
- Friedrich_Risner type Scientist.
- Friedrich_Risner type Person.
- Friedrich_Risner type Mathematician.
- Friedrich_Risner type Optician.
- Friedrich_Risner type Scholar.
- Friedrich_Risner type Scientist.
- Friedrich_Risner type Agent.
- Friedrich_Risner type NaturalPerson.
- Friedrich_Risner type Thing.
- Friedrich_Risner type Q215627.
- Friedrich_Risner type Q5.
- Friedrich_Risner type Person.
- Friedrich_Risner comment "Friedrich Risner (c.1533 – 15 September 1580) was a German mathematician from Hersfeld [1], Hesse.".
- Friedrich_Risner label "Friedrich Risner".
- Friedrich_Risner sameAs Q27323.
- Friedrich_Risner sameAs Friedrich_Risner.
- Friedrich_Risner sameAs Friedrich_Risner.
- Friedrich_Risner sameAs Friedrich_Risner.
- Friedrich_Risner sameAs Friedrich_Risner.
- Friedrich_Risner sameAs m.0gl5q7.
- Friedrich_Risner sameAs Q27323.
- Friedrich_Risner wasDerivedFrom Friedrich_Risner?oldid=676460066.
- Friedrich_Risner depiction Hersfeld_frisner_gravestone.jpg.
- Friedrich_Risner givenName "Friedrich".
- Friedrich_Risner isPrimaryTopicOf Friedrich_Risner.
- Friedrich_Risner name "Friedrich Risner".
- Friedrich_Risner name "Risner, Friedrich".
- Friedrich_Risner surname "Risner".