Peter Crüger or Peter Krüger (20 October 1580 – 6 June 1639) was a

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, mathematical structure, structure, space, Mathematica ...

astronomer An astronomer is a scientist in the field of astronomy who focuses on a specific question or field outside the scope of Earth. Astronomers observe astronomical objects, such as stars, planets, natural satellite, moons, comets and galaxy, galax ...

polymath A polymath or polyhistor is an individual whose knowledge spans many different subjects, known to draw on complex bodies of knowledge to solve specific problems. Polymaths often prefer a specific context in which to explain their knowledge, ...

, and teacher of

Johannes Hevelius Johannes Hevelius Some sources refer to Hevelius as Polish: * * * * * * * Some sources refer to Hevelius as German: * * * * *of the Royal Society * (in German also known as ''Hevel''; ; – 28 January 1687) was a councillor and mayor of Danz ...

Life

Crüger was born in

Königsberg Königsberg (; ; ; ; ; ; , ) is the historic Germany, German and Prussian name of the city now called Kaliningrad, Russia. The city was founded in 1255 on the site of the small Old Prussians, Old Prussian settlement ''Twangste'' by the Teuton ...

Duchy of Prussia The Duchy of Prussia (, , ) or Ducal Prussia (; ) was a duchy in the region of Prussia established as a result of secularization of the Monastic Prussia, the territory that remained under the control of the State of the Teutonic Order until t ...

, a fief of the

Kingdom of Poland The Kingdom of Poland (; Latin: ''Regnum Poloniae'') was a monarchy in Central Europe during the Middle Ages, medieval period from 1025 until 1385. Background The West Slavs, West Slavic tribe of Polans (western), Polans who lived in what i ...

. In scientific documents published in Latin, his common name ''Krüger'' (

German German(s) may refer to: * Germany, the country of the Germans and German things **Germania (Roman era) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizenship in Germany, see also Ge ...

for ''potter'' or ''innkeeper'') was Latinized and spelled ''Crüger''. (Compared to the frequency of the family name '' Krüger'', the name '' Crüger'' is relatively uncommon.) Crüger studied at the universities in

Leipzig Leipzig (, ; ; Upper Saxon: ; ) is the most populous city in the States of Germany, German state of Saxony. The city has a population of 628,718 inhabitants as of 2023. It is the List of cities in Germany by population, eighth-largest city in Ge ...

and

Wittenberg Wittenberg, officially Lutherstadt Wittenberg, is the fourth-largest town in the state of Saxony-Anhalt, in the Germany, Federal Republic of Germany. It is situated on the River Elbe, north of Leipzig and south-west of the reunified German ...

, graduating from Wittenberg in 1606. Among his teachers were

Tycho Brahe Tycho Brahe ( ; ; born Tyge Ottesen Brahe, ; 14 December 154624 October 1601), generally called Tycho for short, was a Danish astronomer of the Renaissance, known for his comprehensive and unprecedentedly accurate astronomical observations. He ...

and

Johannes Kepler Johannes Kepler (27 December 1571 – 15 November 1630) was a German astronomer, mathematician, astrologer, Natural philosophy, natural philosopher and writer on music. He is a key figure in the 17th-century Scientific Revolution, best know ...

. He then moved to the city of Danzig (Gdańsk) in the

, where he worked for the rest of his life as a professor of

poetry Poetry (from the Greek language, Greek word ''poiesis'', "making") is a form of literature, literary art that uses aesthetics, aesthetic and often rhythmic qualities of language to evoke meaning (linguistics), meanings in addition to, or in ...

and

mathematics Mathematics is a field of study that discovers and organizes methods, Mathematical theory, theories and theorems that are developed and Mathematical proof, proved for the needs of empirical sciences and mathematics itself. There are many ar ...

at the '' Danziger Akademikum'' (Danzig Academy). As a philosopher and poet, Crüger was associated with the poet Johannes Plavius, who in his ''Institutio Poetica'' mentions Crüger in the opening letter. Crüger dedicated an extremely laudatory poem to Plavius, which appears in the preface to Plavius' ''Praecepta logicalia''. At the time of the

Thirty Years' War The Thirty Years' War, fought primarily in Central Europe between 1618 and 1648, was one of the most destructive conflicts in History of Europe, European history. An estimated 4.5 to 8 million soldiers and civilians died from battle, famine ...

a number of

Silesia Silesia (see names #Etymology, below) is a historical region of Central Europe that lies mostly within Poland, with small parts in the Czech Silesia, Czech Republic and Germany. Its area is approximately , and the population is estimated at 8, ...

ns took refuge in Danzig from the ravages of war in their towns, among them Andreas Gryphius, who, when he studied at the Danzig academy from 1634 to 1636, had Crüger as a teacher and was very much influenced by the famous mathematician and astronomer. Professors Crüger and Mochingert made Gryphius aware of the new style of German-language poetry. Gryphius wrote memorial verses, when in 1638 Crüger's child died. Years earlier Crüger had already developed a great friendship with Martin Opitz, "father of German poetry", who also lived in Danzig. Crüger published treatises on many scientific subjects and contributed to the progress of trigonometry, geography and astronomy, and to the development of astronomical instruments. In the years 1627 to 1630, Crüger was the teacher of a teenager of the Hewelke family who would become known later as

, the astronomer. After Hevelius had returned to Danzig in 1634, the dying Crüger appealed to him to pursue astronomy. Hevelius gratefully mentions Crüger in his ''Machina coelestis''.Hevelius, Johannes (1673)
''Machina coelestis'', vol. 1
p. 37 . He died in Danzig. The crater Crüger on the

Moon The Moon is Earth's only natural satellite. It Orbit of the Moon, orbits around Earth at Lunar distance, an average distance of (; about 30 times Earth diameter, Earth's diameter). The Moon rotation, rotates, with a rotation period (lunar ...

is named after him.

Notes

References

External links

''Peter Krüger, a pioneer of trigonometry''

* ttp://www.niarts.de/plavius/lyrikplavius3.html Gelegenheitsdichtung in Danzig
Biography of ''Peter Krüger (1580-1639)''
{{DEFAULTSORT:Crueger, Peter 1580 births 1639 deaths Scientists from Königsberg People from the Duchy of Prussia 17th-century German mathematicians German poets 17th-century German astronomers German scientific instrument makers German male poets 17th-century German male writers University of Königsberg alumni Leipzig University alumni University of Wittenberg alumni

Life

See also

Notes

References

External links