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A world map is a map of most or all of the surface of Earth. World maps, because of their scale, must deal with the problem of projection. Maps rendered in two dimensions by necessity distort the display of the three-dimensional surface of the Earth. While this is true of any map, these distortions reach extremes in a world map.
The ratio of the Earth's size to the generating globe's size is called the nominal scale ... whereas the world map, which is a small scale map, might be on a scale of ...
The production of a 1:2,500,000 scale map of the world had been discussed since the late 1940's, partly because many cartographers were dissatisfied with the work on the International Map of the World (or Millionth Map, after its scale of 1:1,000,000).
Mercator projection of the world between 85°S and 85°N. Note the size comparison of Greenland and Africa. The Mercator projection with Tissot's indicatrix of deformation. Mercator 1569 world map (Nova et Aucta Orbis Terrae Descriptio ad Usum Navigantium Emendate Accommodata) showing latitudes 66°S to 80°N.
Scale is important to include on a map because it explains the size relationship between map features and the real world. Scale is commonly represented with a scale bar, a representative fraction ("1:100,000"), or a verbal scale ("1 inch = 1 mile"). [14]
Size of this PNG preview of this SVG file: 512 × 269 pixels. ... World map of long and short scales. Date: 15 June 2012: Source: used blank map from wikipedia ...