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Maps of the world are often either 'political' or 'physical'. The most important purpose of the political map is to show territorial borders; the purpose of the physical map is to show features of [[geography]] such as mountains, soil type or land use. Geological maps show not only the physical surface, but characteristics of the underlying rock, [[Geologic fault|fault]] lines, and subsurface structures. |
Maps of the world are often either 'political' or 'physical'. The most important purpose of the political map is to show territorial borders; the purpose of the physical map is to show features of [[geography]] such as mountains, soil type or land use. Geological maps show not only the physical surface, but characteristics of the underlying rock, [[Geologic fault|fault]] lines, and subsurface structures. |
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==Projections== |
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{{main|Map projection}} |
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Maps that depict the surface of the Earth use a [[map projection|projection]], a way of translating the three-dimensional real surface of the [[geoid]] to a two-dimensional picture. Perhaps the best-known world-map projection is the [[Mercator Projection]], originally designed as a form of [[nautical chart]]. |
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Airplane pilots use aeronautical charts based on a [[Lambert conformal conic projection]], in which a cone is laid over the section of the earth to be mapped. The cone intersects the sphere (the earth) at one or two parallels which are chosen as standard lines. This allows the pilots to plot a great-circle route approximation on a flat, two-dimensional chart. |
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== Gallery == |
== Gallery == |
Revision as of 01:38, 10 October 2006
A world map is a map of the surface of the Earth, which may be made using any of a number of different map projections.
Maps of the world are often either 'political' or 'physical'. The most important purpose of the political map is to show territorial borders; the purpose of the physical map is to show features of geography such as mountains, soil type or land use. Geological maps show not only the physical surface, but characteristics of the underlying rock, fault lines, and subsurface structures.
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Gallery
Some examples of world maps:
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Dymaxion projection
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Elevation map
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Mercator projection
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Topographical map of the world
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A reversed map, challenging the tradition of north as "up"
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A blank political map of the world
See also
Projections
- Albers projection
- Azimuthal conformal projection: see Stereographic projection
- Azimuthal equidistant projection
- Behrmann projection
- Bonne projection
- Bottomley projection
- Chamberlin projection
- Craig retroazimuthal projection
- Dymaxion projection
- Equirectangular projection
- Gall-Peters projection
- Gnomonic projection
- Goode homolosine projection
- Hammer projection
- Hobo-Dyer projection
- Lambert azimuthal equal-area projection
- Lambert conformal conic projection
- Lambert cylindrical equal-area projection
- Littrow projection
- Mercator projection
- Miller cylindrical projection
- Mollweide projection
- Orthographic projection
- Peters Projection Map: see Gall-Peters projection
- Plate carrée projection
- Polyconic projection
- Robinson projection
- Sinusoidal projection
- Stereographic projection
- Transverse Mercator projection
- Werner projection
- Winkel Tripel projection
External links
- Map of the World at World Map Finder
- Interactive World Map
- World map at WikiMapia
- World map
- World maps from the CIA World Factbook
- Thematic World Maps
- Digital Vector Maps
- A small collection of world maps viewed from a reversed perspective
- Shaded Relief Map of the World
- http://www.atlapedia.com/online/mapresources.htm - large world maps
- http://www.passportstamp.com/world_map - world map showing popularity of visits to each country
- http://world-map.nl - find online world maps