Portal:Atlas
The Atlas Portal An atlas is a collection of maps, traditionally bound into book form, but now most often found in multimedia formats. As well as geographic features and political boundaries, many often feature geopolitical, social, religious and economic statistics. The first known 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.  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. An atlas is a collection of maps; it is typically a map of Earth or a region of Earth, but there are atlases of the other planets (and their satellites) in the Solar System. Furthermore, atlases of anatomy exist, mapping out the human body or other organisms.[1] Atlases have traditionally been bound into book form, but today many atlases are in multimedia formats. In addition to presenting geographic features and political boundaries, many atlases often feature geopolitical, social, religious and economic statistics. They also have information about the map and places in it More about Atlases...
Featured map Selected article In mathematics, the polar coordinate system is a two-dimensional coordinate system in which each point on a plane is determined by an angle and a distance. The polar coordinate system is especially useful in situations where the relationship between two points is most easily expressed in terms of angles and distance; in the more familiar Cartesian or rectangular coordinate system, such a relationship can only be found through trigonometric formulation. As the coordinate system is two-dimensional, each point is determined by two polar coordinates: the radial coordinate and the angular coordinate. The radial coordinate (usually denoted as ) denotes the point's distance from a central point known as the pole (equivalent to the origin in the Cartesian system). The angular coordinate (also known as the polar angle or the azimuth angle, and usually denoted by θ or ) denotes the positive or anticlockwise (counterclockwise) angle required to reach the point from the 0° ray or polar axis (which is equivalent to the positive x-axis in the Cartesian coordinate plane). Related portalsSelected biography Abu Abd Allah Muhammad al-Idrisi (1100 - 1165 or 1166) was an Arab cartographer, geographer and traveller who lived in Sicily, at the court of King Roger II. Muhammad al-Idrisi was born in Ceuta and died in Sicily, or maybe in Sabtah. Al Idrisi claimed that he was a direct descendant of the prophet Muhammad. Al-Idrisi's best known work is his map of the world "lawh al-tarsim" (plank of draught), of 1154. He worked on the commentaries and illustrations for eighteen years at the court of King Roger II of Sicily. His map is now known as the 'Tabula Rogeriana', his book as the 'Geografia'. His maps were used extensively during the explorations of the era of the renaissance like the journeys of Christopher Columbus. Related WikiProjectsSelected quote
TopicsAtlas - Geography - Topography Cartography: Cartographers - History of cartography - Ancient world maps - World maps - Compass rose - Generalization - Geographic coordinate system - Relief depiction - Scale - Terra incognita - Planetary cartography Map projection: Azimuthal equidistant - "Butterfly" - Dymaxion - Gall–Peters - General Perspective - Goode homolosine - Mercator - Mollweide - Orthographic - Peirce quincuncial - Robinson - Sinusoidal - Stereographic Maps: Cartogram - Estate map - Geologic map - Linguistic map - Nautical chart - Pictorial map - Reversed map - Road atlas - Thematic map - Topographic map - Weather map - Web mapping - World map Things you can do
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