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astronomy

Johannes Ruysch

Johannes Ruysch is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Johannes Ruysch rather than just read about it. In short: Johannes Ruysch (c. 1470–1533) was a Dutch cartographer, explorer, painter, and Benedictine monk from Utrecht. He is best known for creating one of the earliest printed maps to depict portions of the New World in his 1508 world map included in an edition of Ptolemy's Geography.

Johannes Ruysch — main illustration
Johannes Ruysch — illustration

Key takeaways

  • Johannes Ruysch belongs to astronomy; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Johannes Ruysch to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Johannes Ruysch from memory before moving on to harder problems.

Reference excerpt

Johannes Ruysch (c. 1470–1533) was a Dutch cartographer, explorer, painter, and Benedictine monk from Utrecht. He is best known for creating one of the earliest printed maps to depict portions of the New World in his 1508 world map included in an edition of Ptolemy's Geography.

Biography Born into a noble family, the lords of the dominion of Pijlsweerd, Ruysch studied at the University of Cologne from 1486 to 1489 and then was ordained as a priest and joined the Benedictine cloister of Gross Saint Martin in Cologne. There he worked as a scribe and miniaturist until around 1500. Afterwards he left for Rome, where pope Julius II gave him a dispensation concerning his priestly occupation. He presumably made his world map there in 1507, appears on payrolls in 1508 and 1509 and seems to have specialized in decorative painting. He is thought to be the “Fleming called John”, a close friend of Raphael who at one point resided with him. It has been suggested that he assisted and advised Raphael on his 1509–1510 “Astronomia” and other frescoes in the Stanza della segnatura. It is thought that he may have accompanied an early English or Portuguese voyage to North America in the early 1500s. Soon he left for Rome, where pope Julius II gave him a dispensation concerning his priestly occupation. He presumably made his world map there in 1507, appears on payrolls in 1508 and 1509 and seems to have specialized in decorative painting. He is thought to be the “Fleming called John”, a close friend of Raphael who at one point resided with him. It has been suggested that he assisted and advised Raphael on his 1509–1510 “Astronomia” and other frescoes in the Stanza della segnatura. Not long after, Ruysch went to work at the Portuguese court as cartographer and astronomer, presumably by recommendation of Julius II who was friends with Manuel I of Portugal. Later, he returned to the St. Martin monastery, suffering from consumption, but able to create a, now lost, astronomical wall painting illustrating the days, months (phases of the Moon), and constellations. He is said to have died at considerable age in 1533 at the monastery, where he had a room adjacent to the library.

Works

Ruysch is chiefly known for his world map of 1507, published in the Rome editions of Ptolemy's Geographia in 1507 and 1508. The map is among the earliest printed representations to incorporate geographical information about lands encountered in the western Atlantic following late 15th-century voyages. The map reflects contemporary geographical knowledge derived from the voyages of Christopher Columbus and John Cabot, as well as information from Portuguese sources and the travel accounts of Marco Polo.

Publicizing the shape of the world This situation changed drastically from 1506 to 1507 when three separate efforts to produce world maps were published. The Contarini-Rosselli map of 1506 (now in the British Library) and Martin Waldseemüller's map of the world and globe of 1507 were very influential, but not very widely published. There is only one original copy of each in existence, and both of these copies were discovered in the 20th century. By contrast, Johannes Ruysch's 1507 map of the world was much more widely published and many copies were produced and still exist. It therefore had a very large influence.

The Ruysch Map of 1507 Ruysch's 1507 map of the world was included in the 1507 and 1508 southern editions of Ptolemy's Geographia, an atlas published in Rome. The editor of the 1507 edition of the Geographia was Evangelista Tosinus, a humanist scholar, and the printer was Bernardinus Venetus de Vitalibus, a Venetian printer active in Rome. Because it appeared in printed editions of Ptolemy, the map circulated more widely than many other early sixteenth-century world maps and is among the earliest widely distributed printed maps to incorporate geographical knowledge from the transatlantic voyages of the late 15th century. The Ruysch map is drawn using the same method for showing the world as the Contarini-Rosselli map, based on an earlier system developed by Ptolemy. It draws on information from the voyages of Christopher Columbus and John Cabot, as well as material from Portuguese sources and from Marco Polo's account of his travels. Some notes on the map appear to come directly from Portuguese geographical knowledge. Newfoundland is shown connected to Asia in the Ruysch map, as Cabot believed, reflecting the common view before the Pacific Ocean was known that the lands across the Atlantic were part of eastern Asia. The map also notes the presence of codfish in the waters of the Grand Banks of Newfoundland in the northwest Atlantic. Greenland is shown connected to Newfoundland and Asia on Ruysch's map, and not Europe as earlier maps had shown. Around the north pole, Ruysch drew islands, based on reports in the book Inventio Fortunata of the English friar Nicholas of Lynne. The island above Norway shows remarkable similarities to Svalbard, which would not be discovered until 1597 (by Willem Barents). Ruysch calls it 'European Hyberborea' and a peninsula stretching out towards it is clearly marked with the church of 'Sancti Odulfi', St Olaf's church in Vardø on the Finnmark coast. Ruysch's map contains the discoveries the Portuguese had made along the African coast. Ruysch's map shows Africa as a peninsula surrounded by water. The horn of Africa on Ruysch's map is at approximately the correct latitude. Ruysch's map shows India as a triangular peninsula with Ceylon in the correct proportion and position.

Ruysch's map has details about Asia based on data gathered by travelers like Marco Polo, as well as Greco-Roman authorities. Unaware of the existence of the Pacific Ocean he, like Christopher Columbus, saw Central and North America as the eastern part of Asia. He accepted that Sipango [Japan] and Hispaniola [Haiti] were one and the same, a concept he expressed in the legend he inscribed on his world map: Marco Polo says that 1500 miles to the east of the port of ZAITON (Quanzhou) there is a very large island called SIPANGO whose inhabitants are idolaters: they have their own king and pay tribute to none. Here there is a great amount of gold and gems of all kinds. But as the islands discovered by Spanish ships occupy this place, we do not dare to put this island here, believing what the Spaniards call SPAGNOLA to be SIPANGO, for everything that is written of Sipango is found in Spagnola except for the idolatry.

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Johannes Ruysch

Start with the simplest possible case. Write down what Johannes Ruysch claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Johannes Ruysch before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Johannes Ruysch ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Johannes Ruysch

In research
Johannes Ruysch appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Johannes Ruysch in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Johannes Ruysch is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1460s births, 1533 deaths, 16th-century Dutch astronomers, so understanding it makes those chapters shorter.
In everyday life
Look for Johannes Ruysch outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Johannes Ruysch in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Johannes Ruysch means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Johannes Ruysch out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Johannes Ruysch in simple terms?

Johannes Ruysch (c. 1470–1533) was a Dutch cartographer, explorer, painter, and Benedictine monk from Utrecht. He is best known for creating one of the earliest printed maps to depict portions of the New World in his 1508 world map included in an edition of Ptolemy's Geography.

Why does Johannes Ruysch matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Johannes Ruysch?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Johannes Ruysch.

Tags

  • 1460s births
  • 1533 deaths
  • 16th-century Dutch astronomers
  • 16th-century Dutch cartographers
  • 16th-century Dutch explorers
  • 16th-century Dutch writers
  • Catholic clergy scientists
  • Scientists from Utrecht (city)

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