| Cartographer always maps out his work Columbus Dispatch, OH - Cartographers (pronounced car-TOGG-ruh-fers) are employed by all sorts of companies. Police departments use maps to figure out where the most crimes are … |
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| National Geographic MapMachine Voice of America - Allen Carroll is chief cartographer for the National Geographic Society, whose MapMachine is online at nationalgeographic.com/maps. … |
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| Want to make maps? Columbus Dispatch, OH - Many colleges offer cartography classes. Allen Carroll, chief cartographer at the National Geographic Society, majored in environmental studies. … |
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| Rare 16th century nautical atlas found in Olomouc Radio Prague, Czech Republic - "Jaume Olives was a famous producer of portable maps in the sixteenth century and he was a member of a very famous Catalan family of cartographers. … |
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| Cartographers to defend map at public Lakeville meeting SouthCoastToday.com, MA - By LAUREN DALEY, Standard-Times staff writer. LAKEVILLE — The makers of a state map that former Selectmen Chairman Richard LaCamera decried in November will … |
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| Become a cartographer Birmingham News, AL - Many colleges offer cartography classes. Allen Carroll, chief cartographer at the National Geographic Society, majored in environmental studies. … |
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| Cartographer finds fun in lost art of hand-drawn maps KVOA.com, AZ - He also referred to old maps and township surveys from other communities to familiarize himself with what cartographers in the late 1800s did when drawing … |
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| Cartographer finds fun in lost art Casa Grande Valley Newspapers, AZ - The work, since he graduated from Northern Arizona University with a degree in geology specializing in cartography, has never been permanent for him. … |
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Ptolemy (Claudius Ptolemaeus) was a Greek mathematician,astronomer and geographer. (90 – 168 AD). Ptolemy’s main work is Geographia,written circa 150. This is a compilation of what was known about the world’s geography in the Roman Empire during his time. He relied mainly on the work of an earlier geographer, Marinos of Tyre.
Geographia contains thousands of references to various parts of the old world, with coordinates for most, which allowed cartographers to reconstruct Ptolemy’s world view when the manuscript was re-discovered around 1300 AD.
The most significant contribution of Ptolemy and his maps is the introduction of longitudes and latitudes and the specifying of terrestrial locations by celestial observations.He assigned coordinates to all the places and geographic features he knew, in a grid that spanned the globe. Latitude was measured from the equator, as it is today, but Ptolemy preferred to express it as the length of the longest day rather than degrees of arc (the length of the midsummer day increases from 12h to 24h as you go from the equator to the polar circle). He put the meridian of 0 longitude at the most western land he knew, the Canary Islands.
In the 15th century Ptolemy’s Geographia began to be printed with engraved maps; the earliest printed edition with engraved maps was produced in Bologna in 1477, followed quickly by a Roman edition in 1478 (Campbell, 1987). An edition printed at Ulm in 1482, including woodcut maps, was the first one printed north of the Alps. The maps look distorted as compared to modern maps, because Ptolemy’s data were inaccurate. One reason is that Ptolemy estimated the size of the Earth as too small.
