The name honors William Pitt, Earl of Chatham, and head of government at the time. This selection of maps and views presents a history of the city and region from that moment to near the present; some can be seen on other pages of this website. There are few earlier large scale maps of the region because there was nothing there of interest. The earliest regional map appears to be the manuscript Mercer’s Map The Historic Pittsburgh project has maps from the G. Hopkins Pittsburgh atlas and subsequent editions, as well as other maps and views of the city and some books that show maps. Sanborn real estate maps dating from to near the present can be found on some websites; the earliest seen for Pittsburgh dates to the s. It contains a large number of views and illustrations including maps, especially for the early years. For a potpourri of Pittsburgh views, do an Internet image search. This woodcut map has sometimes been called the “first map of Pittsburgh,” since General Forbes’ army seized control of the Forks of the Ohio and renamed it “Pittsburgh” in November,

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Ptolemy with an armillary sphere model, by Joos van Ghent and Pedro Berruguete , , Louvre , Paris Ptolemy’s Almagest is the only surviving comprehensive ancient treatise on astronomy. Babylonian astronomers had developed arithmetical techniques for calculating astronomical phenomena; Greek astronomers such as Hipparchus had produced geometric models for calculating celestial motions. Ptolemy, however, claimed to have derived his geometrical models from selected astronomical observations by his predecessors spanning more than years, though astronomers have for centuries suspected that his models’ parameters were adopted independently of observations.

Its list of forty-eight constellations is ancestral to the modern system of constellations, but unlike the modern system they did not cover the whole sky only the sky Hipparchus could see.

Latest geographia map buy, sale and trade ads. Save your time by getting us to do the searching. Once we find something we think you’ll find interesting, we’ll email you.

How were they made? A mathematical analysis offers some clues. MATH One of the most remarkable and mysterious technical advances in the history of the world is written on the hide of a 13th-century calf. Inked into the vellum is a chart of the Mediterranean so accurate that ships today could navigate with it. Most earlier maps that included the region were not intended for navigation and were so imprecise that they are virtually unrecognizable to the modern eye.

For the first time, Europeans could accurately visualize their continent in a way that enabled them to improvise new navigational routes instead of simply going from point to point.

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Archeologists have found remnants of their settlements dating back to AD. In the Europeans arrived when the Spanish explorer Alonso de Ojeda led an expedition to the island. The Spanish eventually decided that Curacao, as well as Aruba and Bonaire were without much value, so in they forcibly deported the natives to work as slaves in the copper mines on the island of Hispaniola. He quickly brought back some of the original Caquetios Indian inhabitants to Bonaire and Curacao as laborers.

Geographia A blog about anything Geo and applying spatial thought to the world! These maps then need to be converted into a raster file and eventually digitize to extract the generated information on the map into vector files. The Sumerians are known in world history as being the first civilization dating back to around B.C. They.

It failed during the Great Depression. Clason maps are notorious for having no date information. Instead, various elements of the maps changed over time. Use the link above to connect to a site at Michigan State University to learn more about dating Clason maps. Diversified Maps The following information was provided by Jim Wakefield: Some, but not all, Diversified maps contianed a three or four digit date code.

It was often, but not always in the bottom left or bottom right corner of the body of the map. If the code contains three digits, the first digit appears to reference the base map. If the code contains four digits, the first two digits reference the base map. The second to last digit which, in my experience, is always a 1 or a 2 appears to stand for a first or a second edition of the year of issue. Finally, the last digit of the code is the last digit of the year of issue.

Diversified appeared to have started producing maps in and stopped production in the early 70’s. However, it did not start using this code until

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Opening text of Ptolemy, Almagestum. For some forty years he made the astronomical observations which are the basis for the Syntaxis, which has since become more commonly known as the Almagest, Arabic for “The Greatest. Ptolemy rejected the idea that the earth turned on its axis. We should not laugh too much. Identifying particular star locations as points on a grid requires the same techniques that are used in mapping the earth.

ATLAS MODERNE ‘Atlas Moderne’ which was published in Has the very important maps of North America and Maps of western hem, showing a large inland lake The very hard to find FIRST EDITION of Rigobert Bonne’s larger than the State of Texas.

History of Technology Heroes and Villains – A little light reading Here you will find a brief history of technology. Initially inspired by the development of batteries, it covers technology in general and includes some interesting little known, or long forgotten, facts as well as a few myths about the development of technology, the science behind it, the context in which it occurred and the deeds of the many personalities, eccentrics and charlatans involved.

You may find the Search Engine , the Technology Timeline or the Hall of Fame quicker if you are looking for something or somebody in particular. Scroll down and see what treasures you can discover. Background We think of a battery today as a source of portable power, but it is no exaggeration to say that the battery is one of the most important inventions in the history of mankind.

Volta’s pile was at first a technical curiosity but this new electrochemical phenomenon very quickly opened the door to new branches of both physics and chemistry and a myriad of discoveries, inventions and applications. The electronics, computers and communications industries, power engineering and much of the chemical industry of today were founded on discoveries made possible by the battery.

Pioneers It is often overlooked that throughout the nineteenth century, most of the electrical experimenters, inventors and engineers who made these advances possible had to make their own batteries before they could start their investigations. They did not have the benefit of cheap, off the shelf, mass produced batteries. For many years the telegraph, and later the telephone, industries were the only consumers of batteries in modest volumes and it wasn’t until the twentieth century that new applications created the demand that made the battery a commodity item.

In recent years batteries have changed out of all recognition.

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The name was also reported to Europeans by the Greek geographer Megasthenes around BC, and was later adopted by Ptolemy in his own geographical treatise to identify a relatively large island south of continental Asia. Though the exact place to which the name referred remains uncertain, some scholars consider it to be a wild misinterpretation of any one of several islands, including Sumatera and Sri Lanka.

The island entered European consciousness during the conquests of Alexander the Great. Nearchus sailed around the southern tip of India, describing the smells of cinnamon that wafted from the fabulous island he passed along the way. After the fall of Rome, European geography entered a Dark Age more profound than that of most other disciplines.

pittsburgh maps and views. The year is the th anniversary of the founding of Pittsburgh. General John Forbes bestowed the name on the Forks of the Ohio in November, , after chasing out the French & Indians and occupying an abandoned Fort Duquesne.

Advertising road map about Old road maps of Delaware can be interesting collectibles and valuable research sources. Such maps were issued by oil companies, the state, banks, chambers of commerce, the American Automobile Association, and a number of commercial publishers such as Franklin Survey Co. Dating road maps is often difficult. They usually have no date on them, probably so they could be sold until stock was exhausted.

Even today, it is common to find outdated maps sold at news stands after new editions are issued. Detective work and a knowledge of local history help in dating maps. A list of housing developments and their subdivision dates is invaluable. In New Castle County, the construction of I provides an instant horizon.

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List of Publications by Marcel P. Abraham Ortelius as depicted by Paul Rubens By courtesy of the Plantijn-Moretus Museum of Antwerp, where the original is displayed. Abraham Ortelius’monumental work Theatrum Orbis Terrarum is regarded as the first atlas to appear. An atlas is defined in this instance as a uniform collection of map sheets of similar size, with sustaining text, compiled for the purpose of binding the sheets together to form a coherent book.

Sep 26,  · Containing instructions for drawing maps of the entire oikoumenè (inhabited world), Geographia was what we would now call an atlas. It included a world map, 26 regional maps, and 67 maps of smaller areas.

This is all true but would it carry any weight if you were to say this to a Muslim, Buddhist, or even an atheist? This article will help the reader in gaining some basic awareness about how have the non-Armenian geographers regarded the Armenians and the country of Armenia over the past two millennia. The article also contains some basic information about Armenian cartography. Armenia has appeared in all the maps of the area of Near and Middle East, sometimes as an independent state and at other times as a country divided between its neighbouring empires.

In one form or other, it invariably does appear in the texts and the maps of the ancient Greeks and the Romans as well as in Islamic and Western literature and maps. It must be noted that during the earlier periods and even up to the fourteenth and fifteenth centuries lands were mainly called by the names of their autochthonous people. The name appeared on the general area where the Armenian homeland, where they had lived for centuries.

Despite being landlocked, Armenia even appears on portolan marine charts, which were produced for navigational purposes and generally covered coastal countries and towns only.

Geographia Polonica Vol. 86 No. 4 (2013) Georeferencing of historical …

Also, major thoroughfares need to have consistent connectivity for travelers as well as be able to handle the influx of users on a cellular network. This site provides maps showing FCC licensing data, regulated towers, and market area boundaries. These maps then need to be converted into a raster file and eventually digitize to extract the generated information on the map into vector files.

Cartography is the art and science of map making. It requires a steady hand, attention to detail, and comprehensive knowledge of geography. Though most people can’t name one cartographer off of the tops of their heads, let alone a group of them, maps play an influential role in everyone’s lives.

In a small minority of cases, he was able to source new material from a recent survey, such as the maps of Schleswig-Holstein by Johannes Meyer, but this was a rarity. These copies were often changed to match Blaeu’s style, aesthetics and ornamentation: As a final fallback, the plates of the great masters such as Ortelius and Mercator could also be used. This brief summary of the sources for each volume is primarily taken from the more detailed listing by Koeman , Chapter 5.

Several of the maps of Sweden derive from Andreas Bureus, head of the Swedish Land Survey, which was founded in , and the maps date from a decade around this time. However, some of the other detailed maps of Russia were more recent:

The Mystery of Extraordinarily Accurate Medieval Maps

The Columbia Encyclopedia, 6th ed. Copyright The Columbia University Press map, conventionalized representation of spatial phenomena on a plane surface. Unlike photographs, maps are selective and may be prepared to show various quantitative and qualitative facts, including boundaries, physical features, patterns, and distribution. Each point on such a map corresponds to a geographical position in accordance with a definite scale and projection see map projection.

Maps may also represent such comparative data as industrial power, population density, and birth and death rates.

Dacia and Dacians were the ancient region and people located at the crossroads of Central and Southeastern Europe, north of the Balkan Peninsula, on the Lower Danube. This gallery includes content related not only to Dacians but also to Getae and Moesi.

Danville Under the Patronage of the Duke of Orleans. Bolton,” with added outline color, 4 sheets joined, 98 x 95 cm. London, probably the 3rd edition of His true identity is obscure. In the vacuum caused by the lack of firsthand information, early cartographers were forced to draw heavily on the ancients, primarily Ptolemy and al-Idrisi, for their geographic details of Africa. Even as late as the s, Mr. Bolton makes references to both men in his numerous notes.

Not to be confused with Egyptian kings of the same name, Ptolemy lived in Alexandria and wrote on such subjects as astronomy, astrology, music, history, optics, and geography. His Geographia, written in Alexandria around , was a manual on the construction and drawing of maps. What happened to the manuscript over the next thousand years is not known, but fortunately copies of it survived in Greek manuscripts dating between the 12th and 14th centuries and brought to Italy around the year on the collapse of the Byzantine Empire.

These manuscripts were divided into eight books and contained mapmaking instructions with the first fully worked out map projections, tables of towns and physical features with their latitude and longitude coordinates, and in Book VIII twenty-seven maps: Of the maps of Africa, only the fourth dipped below the equator, showing the fabled Mountains of the Moon and two lake sources for the Nile, as well as unidentified, vaguely located mountain groups in the west.

Schemes of Annotation in Ptolemy’s Geography