geographica ptolemy
Appears in Jansson's Nieuwen atlas, volume 1, 1657. At the end of the 1400s his work was rediscovered and translated into Latin, a more commonly used language of western scholars at the time. It was subject of extensive conservation work in 2010. Strasbourg: Ionnes Scotus, 1520. The first part is a discussion of the data and of the methods he used. Latin. Ptolemy is known for his three scholarly works: the Almagest—which focused on astronomy and geometry, the Tetrabiblos—which focused on astrology, and, most importantly, Geography—which advanced geographic knowledge. Not much is known about the life of the Roman scholar Claudius Ptolemaeus who is more commonly known as Ptolemy. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. The final volume of Geography was Ptolemy's atlas, featuring maps that utilized his grid system and maps that placed north at the top of the map, a cartographic convention that Ptolemy created. Ptolemy erroneously assumed a short circumference of the earth, which ended up convincing Christopher Columbus that he could reach Asia by sailing west from Europe. Geography had a profound effect on the geographical understanding of the world in the Renaissance and it was fortunate that its knowledge was rediscovered to help establish geographical concepts that we almost take for granted today. Key to Ptolemy’s earth map was the notion of latitude and longitude — a handy coordinate system for locating points on a round surface. The text of Geographia reached Europe from Constantinople around AD 1400. Rachel Quist | October 13, 2020November 30, 2011 | Maps. A substantial undertaking in scholarship of the day, Geographia was written in eight volumes. Ptolemy not only mapped the known world but the known universe. Following Marinos, he assigned coordinates to all the places and geographic features he knew, in a grid that spanned the globe. Columbus was especially excited about Ptolemy’s exaggerated size of Asia and persuaded others to finance his journey with the expectation of riches from the relatively close and geographically expansive Asian continent. Finally, in the early fifteenth century, his work was rediscovered and translated into Latin, the language of the educated populace. The greatest contribution of Ptolemy was not the maps themselves but the concepts behind the maps. Copies of the book are now widely available for purchase such as the english translation by J. Lennart Berggren and  Alexander Jones (entitled Ptolemy’s “Geography”: An Annotated Translation of the Theoretical Chapters (affiliate link). One problem modern historians have encountered when researching Ptolemy’s work is that his works were all copied by hand and redistributed. The idea of a large southern continent sparked countless expeditions. © 2016 Trinity College / Oxford University, Trinity is a registered charity, number 1143755, Annual Access Programmes and Outreach Events, Central Outreach Schemes supported by Trinity.


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