Find great deals on eBay for ptolemy map. For more recent exchange rates, please use the. However Ptolemy cheerfully advised readers to “hold on to descriptions of both methods, for the sake of those who will be attracted to the handier one of them because it is easy”. Amounts shown in italicized text are for items listed in currency other than Canadian dollars and are approximate conversions to Canadian dollars based upon Bloomberg's conversion rates. The oldest surviving Ptolemaic world map, redrawn according to his 1st projection by monks at …

Aristotle agreed, adding climatic zones, which led his disciples to introduce rudimentary lines of latitude and longitude.

You have successfully linked your account! It is based on the description contained in Ptolemy’s book Geography, written c. 150. Perhaps we should therefore regard Ptolemy as the first digital geographer. But there was also another astonishing reason for the success of Ptolemy’s projections.

This led him to conclude that the globe had a circumference of 250,000 stades (between 37,000 and 46,000km). For the next 1,500 years virtually every map-maker accepted Ptolemy’s Geography as the authority on the shape and size of the world. View cart for details. By drawing on what remained of the library’s resources, Ptolemy compiled his Geography, to “show the known world as a single and continuous entity” and to “investigate the Earth’s shape, size, and position with respect to its surroundings”. Some of the greatest classical scholars worked there, including the mathematicians Euclid (c325–265 BC) and Archimedes (c287–212 BC), the poet Callimachus (c310–240 BC) and the astronomer – and one of the earliest librarians at Alexandria – Eratosthenes (c275–194 BC).

Copyright © 1995-2020 eBay Inc. All Rights Reserved. Our best wishes for a productive day. Taking the name ‘Ptolemaeus’ suggests he had Greek ancestors, and ‘Claudius’ indicates he possessed Roman citizenship. For Ptolemy this decline represented a unique opportunity to summarise nearly a millennia of Greek geography. It was included in a volume of Ptolemy's maps that was the first to be printed outside Italy and the first to use woodcuts. This map takes valuable information from his famous book Geographia. Everything you ever wanted to know about... 7 famous Victorians: from Brontë to Brunel, Catherine of Aragon: Henry’s greatest queen, 12 alternative giant leaps for mankind – from carnivorism to Magna Carta, D-Day dress rehearsal: the battle for Madagascar. Using a sundial, Eratosthenes measured the angle cast at midday on the summer solstice at both Aswan and Alexandria, which he believed were on the same meridian, 5,000 stades apart (a Greek stadion measured between 148 and 185 metres). When Ptolemy came to write his Geography, he synthesised this mass of Greek learning, and drew a geometrical net of latitude and longitude over the world, preferring the consistency of mathematics over the unreliable gossip of travellers’ tales (what the Greeks called akoe, or ‘hearsay’).
Intro Ptolemy (c.100-178) was a hugely important geographer and astronomer working in Ancient Rome. Something went wrong. This page was last updated: 20-Oct 01:05. Yet expanding the world in this way made it difficult to project the globe onto a flat surface.

You can unsubscribe at any time. He began by defining geography as “an imitation through drawing of the entire known part of the world”. Customs services and international tracking provided. Columbus and Magellan both used Ptolemy to embark on their voyages of discovery, and even 16th-century map-makers like Gerard Mercator and Abraham Ortelius, who knew that Ptolemy’s geographical knowledge was limited, drew maps in homage to the man they regarded as ‘the father of modern geography’. What little we know about him is based on later Byzantine sources. Ptolemy knew that no map projection could ever represent the globe without distortions, so he used Euclidean geometry to offer two different methods of making a world map. The basic principles of Ptolemy’s map projections remain in use to this day – even Google’s ‘Earth’ application uses a projection first invented by him – and yet his life as well as his methods remain a mystery. Shop with confidence. By entering your details, you are agreeing to HistoryExtra terms and conditions. You will shortly receive a receipt for your purchase via email. Ptolemy’s maps: the father of modern Geography. His work informed mapmakers on the size of the Earth, and the co-ordinates for the positions of all the places and features indicated on the map. Number of bids and bid amounts may be slightly out of date. Jerry Brotton is professor of renaissance studies at Queen Mary, University of London. By Ptolemy’s time the library, like the Hellenic culture it represented, was in decline, ravaged by warfare, neglect and looting. Claudius Ptolemaeus (c100 AD–c170) lived in second-century Alexandria, where he wrote the Geographike hyphegesis (c150), known today simply as the Geography. The Ptolemy world map is a map of the world known to the Roman Empire in the 2nd c. AD. He was, in effect, offering subsequent generations a mapping tool-kit, and a gazetteer of places to which they could expand almost indefinitely, building up an ever-changing map of the world as new data became available. Ptolemy explained that anyone could draw such a map by using a swinging ruler and referring to his tables of latitude and longitude in the later books of the Geography. The trigonometry was more complex, and Ptolemy confessed that it was harder to construct a map on this projection, as the curved meridians could not be drawn with the aid of a swinging ruler. Using astronomy and geometry, they pieced together a map of the known world which they called the ecumene – an inhabited ‘dwelling space’. This was fine for the Greeks, who regarded the habitable world as ending somewhere in the Sahara, but it would prove a problem for 15th-century pilots when they tried to sail down the African coast. Although none of these maps survive, a reconstruction of the world map (see top) of Aristotle’s pupil Dicaearchus of Messina, who worked between c326–296 BC, shows how the Greeks began to understand the size and shape of a world centred on Rhodes.

Both Marco Polo and Christopher Columbus added extensively to Ptolemy’s maps based on their own explorations around the globe. Without Ptolemy’s mistaken calculations they would probably have never set off on such daunting voyages, and the shape of the age of discovery might have looked very different. See each listing for international shipping options and costs.

The official website for BBC History Magazine, BBC History Revealed and BBC World Histories Magazine, Jerry Brotton, author of a new book on the history of mapmaking, introduces a second-century geographer whose legacy can be traced to Christopher Columbus and even Google Earth, This article was first published in the September 2012 issue of BBC History Magazine. He was a native of Ptolemaic Egypt, which, during his lifetime, was already under the control of the Roman empire. There seems to be a problem, please try again. It defined geography, explained how to draw a world map, and offered a gazetteer of over 8,000 locations in the known world.
He is the author of A History of the World in Twelve Maps (Allen Lane, September 2012). If you subscribe to BBC History Magazine Print or Digital Editions then you can unlock 10 years’ worth of archived history material fully searchable by Topic, Location, Period and Person. Ptolemy was also able to draw on some remarkably accurate calculations of the size of the Earth, including those of Eratosthenes. Ask any geographer to name one individual responsible for founding their discipline, and they are likely to answer: “Ptolemy”.

In more recent times, interest in Ptolemy and his Geographia has renewed interest of geographers. Instead, he transmitted geographical data in digital form, using a series of numbers and diagrams that allowed later map-makers to adapt it. He calculated the angle between the two places as one-fiftieth of a circle. The known world’s breadth was estimated at just over half its length, from Thule (Iceland), 63° north of the equator, to the region of ‘Agisymba’ (modern-day Chad), 16° south of the equator, a latitudinal range of just over 79°. On the first cone-like projection (shown top) the meridians were drawn as straight lines converging at an imaginary point beyond the north pole, with the parallels shown as curved arcs of different lengths, centred on the same point. The Greeks had been drawing maps – onto a physical medium, such as wood, stone or bronze, called pinax – for centuries, and writing about them in works usually entitled periodos ge¯s (literally a ‘circuit of the Earth’). His compromise was to propose meridians forming acute angles at the equator. Ptolemy’s maps of the known world documented the Canary Islands to the Gulf of Thailand. There is no concrete evidence that Ptolemy ever drew his own maps. He therefore offered a second projection (above) that was “similarly proportioned” to the globe by drawing curved parallels and meridians. He then divided the globe’s circumference into 360° (based on the Babylonian sexagesimal system), with the known world stretching from west to east through an arc of 177°, from the Canary Islands to Cattigara in modern-day Vietnam. Please enter your number below. In Phaedo (c380 BC), Plato described the Earth as “round and in the centre of the heavens”, “marvellous for its beauty” and circular perfection.

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