He lived in Egypt under Roman rule, but few reliable details of his life are known. Ptolemy was a common name. The third is now commonly called the Geographia, which is a thorough discussion of the geographic knowledge of the Greco-Roman world. One problem modern historians have encountered when researching Ptolemy’s work is that his works were all copied by hand and redistributed. He authored three books with historical significance:  1) the Almagest (in; Greek, “The Great Treatise) on mathematics; 2) Geographia; and 3) Terabiblos (“Four Books) about astrology and phillosphy. Both Marco Polo and Christopher Columbus added extensively to Ptolemy’s maps based on their own explorations around the globe.In more recent times, interest in Ptolemy and his Geographia has renewed interest of geographers. 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. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. He lived in Egypt under Roman rule, but few reliable details of his life are known. He invented the concept of latitude and longitude, a mapping system still commonly used today.

Rachel Quist | October 13, 2020November 30, 2011 | Maps. The first is the astronomical treatise now known as the Almagest. Ptolemy's second main work is his Geography (also called the Geographia), a compilation of geographical coordinates of the part of the world known to the Roman Empire during his time. Additionally, Ptolemy showed the Indian Ocean as a large inland sea, bordered on the south by Terra Incognita (unknown land). The first part discusses the problems of projections, that is, representing spherical item such as the earth on a flat sheet of paper.

Claudius Ptolemaeus was born c. AD 90 in Egypt and was known as a mathematician, geographer, astronomer and astrologer. The second part included seven volumes and was composed entirely of atlas. Geography consisted of eight volumes. The greatest contribution of Ptolemy was not the maps themselves but the concepts behind the maps. Claudius Ptolemaeus was born c. AD 90 in Egypt and was known as a mathematician, geographer, astronomer and astrologer. Geography Claudius Ptolemaeus (circa 100–circa 170), known as Ptolemy, was an astronomer, mathematician, and geographer of Greek descent who lived and worked in the Egyptian city of Alexandria. In the Almagest, Ptolemy laid out a map of the heavens. He offered three different methods of map projections and provided coordinates to all the geographic features he knew, more than 8,000 places.

Claudius Ptolemy could be described as an ancient Roman renaissance man. Thomas Pope’s signature is on the title page.

Geography consisted of eight volumes.

Trinity’s copy of the Geographia is bound in sixteenth century board Oxford roll binding with gold tooled labels to the spine. Not much is known about the life of the Roman scholar Claudius Ptolemaeus who is more commonly known as Ptolemy. Illustrations include images of the four elements and portraits of Julius Caeser, Ptolemy, Mercator and Hondius. 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. Appears in Jansson's Nieuwen atlas, volume 1, 1657. The idea of a large southern continent sparked countless expeditions. Like much knowledge of the ancient era, the awesome work of Ptolemy was lost for over a thousand years after it was first published. ... Claudii Ptolemaei geographia by Ptolemy, 2nd cent; Nobbe, Karl Friedrich August, 1791-1878. A substantial undertaking in scholarship of the day, Geographia was written in eight volumes. In the second part of the Geographia, he provided the necessary topographic lists, and captions for the maps. Ptolemaeus auctus, restitutus, emaculatus: cum tabulis veteribus ac novis.

He was not only a geographer but a mathematician, astronomer, astrologer, and even a poet. The second is the astrological treatise known as the Tetrabiblos. It was subject of extensive conservation work in 2010. Track Real-Time Air Pollution With this Crowdsourced Map.

Available also through the Library of Congress Web site as a raster image.

Latin.

In his work Geographia, written about AD 150, Ptolemy described and compiled all knowledge about the world’s geography in the Roman Empire of the 2 nd century. Ptolemy was the author of several scientific treatises, at least three of which were of continuing importance to later Islamic and European science. In 2006, a new edition of Ptolemy’s Geographia was published in Switzerland, the first complete Greek text published since the 1840s. 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. The first discussed the problems of representing a spherical earth on a flat sheet of paper (remember, ancient Greek and Roman scholars knew the earth was round) and provided information about map projections. This geocentric model of the universe (also known as the Ptolemaic system) served as the predominant cosmological system throughout the ancient world, including ancient Greece and ancient Roman periods, until about the late 1500s when the heliocentric model of Galileo, Copernicus, and Kepler gained ground in the scientific community (but not necessarily the religious community of the Catholic Church).

Of course, the reality of his journey was much different. The maps in surviving manuscripts of Ptolemy’s Geographia, however, only date from about 1300, after the text was rediscovered by Maximus Planudes. Unfortunately, his gazetteer and maps contained a great number of errors due to the simple fact that Ptolemy was forced to rely upon the best estimates of merchant travelers (who were incapable of accurately measuring longitude at the time). He believed, and mapped, the Earth as the center of the universe. He also acknowledged ancient astronomer Hipparchus for having provided the elevation of the north celestial pole for a few cities. Ptolemy’s Geographia was a worldwide best seller of ancient times and was immensely influential for many influential explorers, most notably Christopher Columbus.

Latitude was measured horizontally from the equator while longitude was measured from the westernmost landmass known to date, the Canary Islands off of the coast of Spain.

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 was an astronomer and mathematician who probably worked in Alexandria between 127AD and 148AD, he wrote a number of Astonomical, Mathematical and Astrological books, and his Geographica that describes the locations of towns, tribes and rivers across the Empire. Ptolemy was well aware that he knew about only a quarter of the globe, and an erroneous extension of China southward suggests his sources did not reach all the way to the Pacific Ocean. 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.

He died in Alexandria around AD 168.

Claudii Ptolemaei geographia Item Preview remove-circle Share or Embed This Item. Publication date 1843 Topics Geography, Ancient Publisher Lipsiae, Sumptibus et typis Caroli Tauchnitii The text of Geographia reached Europe from Constantinople around AD 1400.

The Geographia relies somewhat on the work of an earlier geographer, Marinos of Tyre, and on gazetteers of the Roman and ancient Persian Empire.

The second through seventh volumes of the work was a gazetteer of sorts, as a collection of eight thousand places around the world.

Finally, in the early fifteenth century, his work was rediscovered and translated into Latin, the language of the educated populace. In his Geography, Ptolemy gathered all the geographic knowledge possessed by …

A substantial undertaking in scholarship of the day, Geographia was written in eight volumes. He died in Alexandria around AD 168.

Key to Ptolemy’s earth map was the notion of latitude and longitude — a handy coordinate system for locating points on a round surface. One such source that points out this problem is an Arabian scholar by the name of al-Mas’udi who wrote around AD 956 that Ptolemy’s Geographia mentioned a colored map with more than 4,530 cities plotted and over 200 mountains. Ptolemy’s maps of the known world documented the Canary Islands to the Gulf of Thailand.

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. Ptolemy didn’t come up with the idea — he freely borrowed it from a contemporary, Marinos of Tyre.

Translated by J. Angelus.

For hundreds of years, unscrupulous cartographers of the middle ages printed a variety of atlases with the name Ptolemy on them, to provide credentials for their books. Note that the scholar Ptolemy is not the same as the Ptolemy who governed Egypt and lived from 372-283 BCE.

Text on verso in Dutch. Following Marinos, he assigned coordinates to all the places and geographic features he knew, in a grid that spanned the globe. Strasbourg: Ionnes Scotus, 1520. 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. Many of his maps were not redrawn when copies were made and most copies known to exist today do not include his drawings; rather, the books include maps made many centuries later based on his descriptions or are missing maps altogether. 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).

He was a Roman citizen who lived in Alexandria, Egypt and wrote is scientific texts in Greek. Relief shown pictorially. In Ptolemy’s world map he identifies many modern geographic areas including Taprobane (Sri Lanka) and Aurea Chersoneus (Malay Peninsula). However, he was estimated to have lived from approximately 90 to 170 CE and worked in the library at Alexandria from 127 to 150. Biography of Eratosthenes, Greek Mathematician and Geographer, M.A., Geography, California State University - Northridge, B.A., Geography, University of California - Davis.

Why Was Africa Called the Dark Continent? © 2016 Trinity College / Oxford University, Trinity is a registered charity, number 1143755, Annual Access Programmes and Outreach Events, Central Outreach Schemes supported by Trinity.

Like many ancient books and scholarly works, especially those housed at the Library at Alexandria, the work of Ptolemy was lost for over a thousand years in Western scholarship.

His collection of place names and their coordinates reveals the geographic knowledge of the Roman empire in the second century. This gazetteer was remarkable for Ptolemy invented latitude and longitude—he was the first to place a grid system on a map and use the same grid system for the entire planet. Includes notes.

In his work Geographia, written about AD 150, Ptolemy described and compiled all knowledge about the world’s geography in the Roman Empire of the 2nd century. The Italian Jacopo d’Angelo translated the work into Latin in 1406.



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