Gerd Grasshoff's Books

Planetary Diagrams for Roman Astronomy in Medieval Europe, Ca. 800-1500

By: Bruce Eastwood,Gerd Grasshoff

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Planetary Diagrams for Roman Astronomy in Medieval Europe, Ca. 800-1500

By: Bruce Eastwood,Gerd Grasshoff

Early medieval astronomy, esp. in the era of Charlemagne & his successors, consisted of texts that went far beyond the boundaries of computus, which modern scholars have long believed to be the only significant context for astronomical studies of that time. The texts contained innovative diagrams where no other sign of divergence from the text could be seen. Such diagrams were found to provide an indication of understandings of the texts -- which were different from those of modern scholars. Contents: Astronomy & Its Teaching in Carolingian Europe; Functions & Locations of Planetary Diagrams; Sources & Topics of Planetary Diagrams; Plinian Diagrams; Macrobian Diagrams; Calcidian Diagrams; & Capellan Diagrams. Illus. This is a print on demand publication.

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196

Publisher

American Philosophical Society

Published Date

ISBN 10

0871699435

ISBN 13

9780871699435

The History of Ptolemy’s Star Catalogue

By: Gerd Graßhoff

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The History of Ptolemy’s Star Catalogue

By: Gerd Graßhoff

Ptolemy's Almagest shares with Euclid's Elements the glory of being the scientific text longest in use. From its conception in the second century up to the late Renaissance, this work determined astronomy as a science. During this time the Almagest was not only a work on astronomy; the subject was defined as what is described in the Almagest. The cautious emancipation of the late middle ages and the revolutionary creation of the new science in the 16th century are not conceivable without reference to the Almagest. This text lifted European astronomy to the high standard of knowledge on which the new science flourished. Before, the Ptolemaic models of the orbits of the sun, the moon, and the planets had been refined by Arabic astronomers. They provided the structural elements with which Copernicus and Kepler ushered in the era of modern astronomy. The Almagest survived the destruction of its epicyclic representation of the planetary orbits in the conceptual traces left behind in the theories of its successors. The clear separation of the sidereal from the tropical year, the celestial coordinate systems, the concepts of time, the forms of the constellations, and brightness classifications of celestial objects are, among many other things, still part of the astronomical canon even today.

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361

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Springer Science & Business Media

Published Date

ISBN 10

1461244684

ISBN 13

9781461244684

Planetary Diagrams for Roman Astronomy in Medieval Europe, Ca. 800-1500

By: Bruce Eastwood,Gerd Grasshoff

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Planetary Diagrams for Roman Astronomy in Medieval Europe, Ca. 800-1500

By: Bruce Eastwood,Gerd Grasshoff

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N/A

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Solve jigsaw puzzle

Age

Page Count

196

Publisher

American Philosophical Society

Published Date

ISBN 10

0871699435

ISBN 13

9780871699435

The History of Ptolemy’s Star Catalogue

By: Gerd Graßhoff

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The History of Ptolemy’s Star Catalogue

By: Gerd Graßhoff

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

361

Publisher

Springer Science & Business Media

Published Date

ISBN 10

1461244684

ISBN 13

9781461244684

Book's by Gerd Grasshoff

Planetary Diagrams for Roman Astronomy in Medieval Europe, Ca. 800-1500

Planetary Diagrams for Roman Astronomy in Medieval Europe, Ca. 800-1500

The History of Ptolemy’s Star Catalogue

The History of Ptolemy’s Star Catalogue

Planetary Diagrams for Roman Astronomy in Medieval Europe, Ca. 800-1500

Planetary Diagrams for Roman Astronomy in Medieval Europe, Ca. 800-1500

The History of Ptolemy’s Star Catalogue

The History of Ptolemy’s Star Catalogue

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