Daily Medieval

A daily post on the Middle Ages by Tim Shaw.

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Showing posts with label Ptolemy. Show all posts
Showing posts with label Ptolemy. Show all posts
Wednesday, February 23, 2022

Gerard of Cremona x 2

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Gerard of Cremona (1114-1187CE) was an important translator of Arabic texts into Latin. Born in Cremona in northern Italy, he went to Toledo...
Monday, April 7, 2014

The Huns

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Today is the anniversary of Attila the Hun's attack on the town of Metz in Gaul. In the 1st century CE, the Roman historian Tacitus ...
Thursday, October 24, 2013

Cross-referencing an Eclipse

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Diagram of an eclipse from a modern translation of Hipparchus It is not always easy to figure out dates from classical or medieval writi...
Friday, December 14, 2012

The Rotating Earth

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Nicholas Oresme While re-examining Aristotle, Jean Buridan used observation and brainpower to anticipate some of the ideas we attribute...
Saturday, December 8, 2012

The Ring of Fire vs. The Flood

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15th century portrayal of Ptolemy's map Prior to the Age of Exploration, human beings in the western hemisphere did not attempt to t...
Friday, August 3, 2012

How far are the stars?

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Rabbi Levi ben Gerson, also known as Gersonides, lived from 1288-c.1344. He was from a family of scholars: his father, Gerson ben Solomon of...
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