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{{short description|Danish mathematician and physicist (1561–1656)}}
'''Thomas Fincke''' ([[January 6]], [[1561]]–[[April 24]], [[1656]]) was a [[Denmark|Danish]] [[mathematics|mathematician]] and [[physics|physicist]], and a professor at the [[University of Copenhagen]] for more than 60 years.
[[File:Thomas Fincke.jpeg|thumb|Thomas Fincke.]]
'''Thomas Fincke''' (6 January 1561 24 April 1656) was a [[Denmark|Danish]] [[mathematician]] and [[physicist]], and a professor at the [[University of Copenhagen]] for more than 60 years.<ref>{{cite web|url= https://runeberg.org/dbl/5/0152.html |title= Fincke, Thomas, 1561-1656|publisher = Dansk biografisk Lexikon |access-date=August 1, 2019}}</ref>


==Biography==
Fincke was born in [[Flensburg]], [[Schleswig]] and died in [[Copenhagen]]. His lasting achievement is found in his book ''Geometria rotundi'' (1583), in which he introduced the [[trigonometric function]]s [[tangent (trigonometric function)|tangent]] and [[secant]].
[[Image:Finck - Geometriae rotundi libri XIIII, 1583 - 130535.jpg|thumb|''Geometriae rotundi libri XIIII'', 1583]]
Thomas Jacobsen Fincke was born in [[Flensburg]] in [[Schleswig]].
Fincke was the son of Councillor Jacob Fincke and Anna Thorsmede. He completed his primary schooling at Flensburg. From 1577, he studied mathematics, rhetoric and other philosophical studies for five years at the [[University of Strasbourg]].


Fincke's lasting achievement is found in his book ''Geometria rotundi'' (1583), in which he introduced the modern names of the [[trigonometric function]]s [[tangent (trigonometric function)|tangent]] and [[secant (trigonometry)|secant]]. In 1590, he became professor of mathematics at the [[University of Copenhagen]]. In 1603 he also obtained a professorship in medicine.
His son in law was the great Danish physician and natural historian, [[Ole Worm]], who married his daughter, Dorothea.

==Personal life==
He was married to Ivaria Jungesdatter Ivers (1574–1614).
His son Jacob Fincke (1592–1663) was a professor of physics.
His daughters married scientist [[Caspar Bartholin the Elder]] (1585–1629), botanist Jørgen Fuiren (1581–1628), historian [[Ole Worm]] (1588–1654) and theologian Hans Brochmand (1594–1630).<ref>Jørgen Fuiren ''Dansk Biografisk Leksikon'' Retrieved December 1, 2020</ref>
<ref>{{cite web|url= https://runeberg.org/dbl/19/0276.html|title= Worm, Ole (Oluf), 1588-1654|publisher = Dansk biografisk Lexikon |access-date=August 1, 2019}}</ref><ref>Hans Brochmand - teolog ''Dansk Biografisk Leksikon'' Retrieved December 1, 2020</ref>

Fincke died at Copenhagen and was buried at [[Church of Our Lady, Copenhagen|Vor Frue Kirke]].

==References==
{{reflist}}


==External links==
==External links==
* {{MacTutor Biography|id=Fincke}}
* {{MacTutor Biography|id=Fincke}}

{{Authority control}}


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{{DEFAULTSORT:Fincke, Thomas}}
[[Category:1561 births|Fincke, Thomas]]
[[Category:1561 births]]
[[Category:1656 deaths|Fincke, Thomas]]
[[Category:1656 deaths]]
[[Category:16th-century mathematicians|Fincke, Thomas]]
[[Category:16th-century Danish scientists]]
[[Category:17th-century mathematicians|Fincke, Thomas]]
[[Category:16th-century Danish educators]]
[[Category:Danish mathematicians|Fincke, Thomas]]
[[Category:17th-century Danish scientists]]
[[Category:Danish physicists|Fincke, Thomas]]
[[Category:16th-century Danish mathematicians]]
[[Category:17th-century Danish mathematicians]]
[[Category:Danish mathematicians]]
[[Category:Danish physicists]]
[[Category:Science teachers]]
[[Category:Science teachers]]
[[Category:Mathematics educators]]
[[Category:Mathematics writers]]
[[Category:Mathematics writers]]
[[Category:University of Copenhagen alumni]]
[[Category:University of Strasbourg alumni]]
[[Category:University of Copenhagen faculty]]
[[Category:Academic staff of the University of Copenhagen]]
[[Category:Rectors of the University of Copenhagen]]
[[Category:People from Flensburg]]
[[Category:Burials at the Church of Our Lady, Copenhagen]]


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Latest revision as of 00:21, 17 March 2024

Thomas Fincke.

Thomas Fincke (6 January 1561 – 24 April 1656) was a Danish mathematician and physicist, and a professor at the University of Copenhagen for more than 60 years.[1]

Biography

[edit]
Geometriae rotundi libri XIIII, 1583

Thomas Jacobsen Fincke was born in Flensburg in Schleswig. Fincke was the son of Councillor Jacob Fincke and Anna Thorsmede. He completed his primary schooling at Flensburg. From 1577, he studied mathematics, rhetoric and other philosophical studies for five years at the University of Strasbourg.

Fincke's lasting achievement is found in his book Geometria rotundi (1583), in which he introduced the modern names of the trigonometric functions tangent and secant. In 1590, he became professor of mathematics at the University of Copenhagen. In 1603 he also obtained a professorship in medicine.

Personal life

[edit]

He was married to Ivaria Jungesdatter Ivers (1574–1614). His son Jacob Fincke (1592–1663) was a professor of physics. His daughters married scientist Caspar Bartholin the Elder (1585–1629), botanist Jørgen Fuiren (1581–1628), historian Ole Worm (1588–1654) and theologian Hans Brochmand (1594–1630).[2] [3][4]

Fincke died at Copenhagen and was buried at Vor Frue Kirke.

References

[edit]
  1. ^ "Fincke, Thomas, 1561-1656". Dansk biografisk Lexikon. Retrieved August 1, 2019.
  2. ^ Jørgen Fuiren Dansk Biografisk Leksikon Retrieved December 1, 2020
  3. ^ "Worm, Ole (Oluf), 1588-1654". Dansk biografisk Lexikon. Retrieved August 1, 2019.
  4. ^ Hans Brochmand - teolog Dansk Biografisk Leksikon Retrieved December 1, 2020
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