This thesis describes the way in which Claudius Ptolemy perceived geography. It presents all the information known about Ptolemy's life - most of it from the text of Ptolemy's treatises, but some from the commentaries of scholars who lived at the same time as Ptolemy. The contents of the Geography are presented in more detail. Almagest and Tetrabiblos, that are not related to the thesis topic, are also mentioned, since Ptolemy uses certain methods in his research that are described in these two books. Ptolemy equated geography with cartography, however differentiated between geography and chorography. Both are concerned with describing the known world; the former focuses on the general features of the world, while the latter focuses on specific parts or regions of the world and describes it in more detail. Ptolemy's discoveries were widely accepted for centuries, until new findings challenged Ptolemy's theories.
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