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  2. Mercator projection - Wikipedia

    en.wikipedia.org/wiki/Mercator_projection

    For example, a Mercator map printed in a book might have an equatorial width of 13.4 cm corresponding to a globe radius of 2.13 cm and an RF of approximately ⁠ 1 / 300M ⁠ (M is used as an abbreviation for 1,000,000 in writing an RF) whereas Mercator's original 1569 map has a width of 198 cm corresponding to a globe radius of 31.5 cm and an ...

  3. List of map projections - Wikipedia

    en.wikipedia.org/wiki/List_of_map_projections

    Gott, Goldberg and Vanderbei’s double-sided disk map was designed to minimize all six types of map distortions. Not properly "a" map projection because it is on two surfaces instead of one, it consists of two hemispheric equidistant azimuthal projections back-to-back. [5] [6] [7] 1879 Peirce quincuncial: Other Conformal Charles Sanders Peirce

  4. Tissot's indicatrix - Wikipedia

    en.wikipedia.org/wiki/Tissot's_indicatrix

    The Behrmann projection with Tissot's indicatrices The Mercator projection with Tissot's indicatrices. In cartography, a Tissot's indicatrix (Tissot indicatrix, Tissot's ellipse, Tissot ellipse, ellipse of distortion) (plural: "Tissot's indicatrices") is a mathematical contrivance presented by French mathematician Nicolas Auguste Tissot in 1859 and 1871 in order to characterize local ...

  5. Map projection - Wikipedia

    en.wikipedia.org/wiki/Map_projection

    A controversy in the 1980s over the Peters map motivated the American Cartographic Association (now the Cartography and Geographic Information Society) to produce a series of booklets (including Which Map Is Best [46]) designed to educate the public about map projections and distortion in maps. In 1989 and 1990, after some internal debate ...

  6. Universal Transverse Mercator coordinate system - Wikipedia

    en.wikipedia.org/wiki/Universal_Transverse...

    Each of the 60 zones uses a transverse Mercator projection that can map a region of large north-south extent with low distortion. By using narrow zones of 6° of longitude (up to 668 km) in width, and reducing the scale factor along the central meridian to 0.9996 (a reduction of 1:2500), the amount of distortion is held below 1 part in 1,000 ...

  7. Sinusoidal projection - Wikipedia

    en.wikipedia.org/wiki/Sinusoidal_projection

    With no distortion along the central meridian and the equator, distances along those lines are correct, as are the angles of intersection of other lines with those two lines. Distortion is lowest throughout the region of the map close to those lines. A sinusoidal projection shows relative sizes accurately, but distorts shapes and directions.

  8. The Overdue, Under-Told Story Of The Clitoris

    projects.huffingtonpost.com/projects/cliteracy

    Chances are high that one of the first things that comes to mind is not Earth itself, but a map of it. One map in particular: Credit: Getty Images. Known as the Mercator projection, after the cartographer Gerardus Mercator, who first conceived of it in 1569, it’s ubiquitous in classrooms around the world. The map demands authority.

  9. Miller cylindrical projection - Wikipedia

    en.wikipedia.org/wiki/Miller_cylindrical_projection

    Miller projection with 1,000 km indicatrices of distortion. The Miller cylindrical projection is a modified Mercator projection, proposed by Osborn Maitland Miller in 1942. The latitude is scaled by a factor of 4 ⁄ 5, projected according to Mercator, and then the result is multiplied by 5 ⁄ 4 to retain scale along the equator. [1] Hence: