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[Gekrönter griechischer Astronom Ptolemäus und sein Renaissance-Übersetzer Regiomontanus, sitzend unter einer Armillarsphäre und umgeben von verzierten Rändern]

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Zusammenfassung

Vorderseite in: Epytom bei Almagestum / Regiomontus. Venedig: J. Hammam, 1496. Veröffentlicht in: The tradition of science / Leonard C. Bruno. Washington, D.C.: Library of Congress, 1987, S. 29.

An armillary sphere is a model of the celestial sphere used to demonstrate the motions of the planets around the Sun. It consists of a set of rings representing the celestial equator, the ecliptic and other important circles on the celestial sphere, mounted on an axis. The rings can be rotated to show the positions of the stars and planets at different times and dates. Armillary spheres were used by ancient astronomers to study the movements of the heavens and are still used today as decorative objects or educational tools. Armillary spheres were first developed by ancient Greek astronomers, including Hipparchus and Ptolemy, in the 2nd century BC. They were later used by Chinese, Persian and Islamic astronomers. During the Renaissance, armillary spheres became popular with European scientists and were often incorporated into astronomical instruments and globes. Today, armillary spheres can be found in museums, observatories and private collections around the world. Some modern versions incorporate electronic sensors and motors to automate the movement of the rings.

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Tags

Ptolemäus aktiv 2. Jahrhundert regiomontanus joannes Astronomie Buchillustrationen griechisch Astronom griechischer astronom ptolemäus Renaissance Übersetzer regiomontanus Renaissance-Übersetzer regiomontanus Armillar Kugel Armillarsphäre Grenze Vintage-Illustration unseren Platz im Kosmos finden von Galileo bis Sagan und darüber hinaus seltene Bücher Gravur Italienisch Planet druckt Planeten Dekoration und Verzierung Manuskripte Illumination von Büchern und Manuskripten illuminierte Handschriften Kongressbibliothek
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Datum

01/01/1496
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in sammlungen

Armillary sphere

Model of objects in the sky consisting of a spherical framework of rings centred on the Earth or the Sun, representing lines of celestial longitude and latitude and other astronomically important features such as the ecliptic.
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Quelle

Library of Congress
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Link

http://www.loc.gov/
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No known restrictions on publication.

label_outline Explore Astronomer, Sphere, Finding Our Place In The Cosmos From Galileo To Sagan And Beyond

Themen

Ptolemäus aktiv 2. Jahrhundert regiomontanus joannes Astronomie Buchillustrationen griechisch Astronom griechischer astronom ptolemäus Renaissance Übersetzer regiomontanus Renaissance-Übersetzer regiomontanus Armillar Kugel Armillarsphäre Grenze Vintage-Illustration unseren Platz im Kosmos finden von Galileo bis Sagan und darüber hinaus seltene Bücher Gravur Italienisch Planet druckt Planeten Dekoration und Verzierung Manuskripte Illumination von Büchern und Manuskripten illuminierte Handschriften Kongressbibliothek