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The Atlas Portal

Political and physical world map from the end of 2005

An atlas is a collection of maps, traditionally bound into book form, but now found in multimedia formats. As well as geographic features and political boundaries, many often feature geopolitical, social, religious and economic statistics.

The first book that could be called an atlas was constructed from the calculations of Claudius Ptolemy, a Greek geographer working in Alexandria circa A.D. 150. The first edition was published in Bologna in 1477 and was illustrated with a set of 27 maps, though scholars say that it is not known whether the printed maps were engraved versions of original maps made by Ptolemy, or whether they were constructed by medieval Greek scholars from Ptolemy's text.

Atlas of Greek mythology

The origin of the term atlas is a common source of misconception, perhaps because two different mythical figures named 'Atlas' are associated with mapmaking. King Atlas, a mythical King of Mauretania, was, according to legend, a wise philosopher, mathematician and astronomer who supposedly made the first celestial globe. However, the more widely known Atlas is a figure from Greek mythology.

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Featured map

Tracks of all tropical cyclones, 1985 to 2005
Credit: Nilfanion
Map of the cumulative tracks of all tropical cyclones during the 1985–2005 time period. The Pacific Ocean west of the International Date Line sees more tropical cyclones than any other basin, while there is almost no activity in the Atlantic Ocean south of the Equator.

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Portion of an electronic chart of the Bering Strait

A nautical chart is a graphic representation of a maritime area and adjacent coastal regions. Depending on the scale of the chart, it may show depths of water and heights of land (topographic map), natural features of the seabed, details of the coastline, navigational hazards, locations of natural and man-made aids to navigation, information on tides and currents, local details of the Earth's magnetic field, and man-made structures such as harbors, buildings and bridges. Nautical charts are essential tools for marine navigation; many countries require vessels, especially commercial ships, to carry them. Nautical charting may take the form of charts printed on paper or computerised electronic navigational charts.

Conventional nautical charts are printed on large sheets of paper at a variety of scales. Electronic navigational charts, which use computer software and electronic databases to provide navigation information, can augment or in some cases replace paper charts, though most mariners carry paper charts as a back up in case the electronic charting system fails.

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Nicolaas Witsen's Map of Tartary

Nicolaes Witsen (8 May 1641 - 10 August 1717) was a Dutch diplomat, cartographer, writer and thirteenth mayor of Amsterdam between 1682-1706. He was a representative to the States-General, administrator of the VOC and extraordinary-ambassador extraordinaris to the English court. Witsen was an authority on shipbuilding and his books on the subject are important sources on Dutch shipbuilding in the 17th century.

Nicolaes Witsen was the son of Cornelis Jan Witsen, mayor of Amsterdam, head bailiff and administrator of the Dutch West India Company. Witsen published the first map of Siberia, and in 1692 a treatise titled "Noord en Oost Tartaryen", describing Siberia and the surrounding areas.

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WikiProject: Geography
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