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  2. Cassini projection - Wikipedia

    en.wikipedia.org/wiki/Cassini_projection

    The Cassini projection (also sometimes known as the Cassini–Soldner projection or Soldner projection [1]) is a map projection first described in an approximate form by César-François Cassini de Thury in 1745. Its precise formulas were found through later analysis by Johann Georg von Soldner around 1810. [2]

  3. Gall–Peters projection - Wikipedia

    en.wikipedia.org/wiki/Gall–Peters_projection

    Peters brought the projection to a wider audience beginning in the early 1970s through his "Peters World Map". The name "Gall–Peters projection" was first used by Arthur H. Robinson in a pamphlet put out by the American Cartographic Association in 1986. [2] The Gall–Peters projection achieved notoriety in the late 20th century as the ...

  4. Sinusoidal projection - Wikipedia

    en.wikipedia.org/wiki/Sinusoidal_projection

    The sinusoidal projection is a pseudocylindrical equal-area map projection, sometimes called the Sanson–Flamsteed or the Mercator equal-area projection. Jean Cossin of Dieppe was one of the first mapmakers to use the sinusoidal, using it in a world map in 1570.

  5. 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 ...

  6. Aitoff projection - Wikipedia

    en.wikipedia.org/wiki/Aitoff_projection

    The Aitoff projection is a modified azimuthal map projection proposed by David A. Aitoff in 1889. Based on the equatorial form of the azimuthal equidistant projection , Aitoff first halves longitudes, then projects according to the azimuthal equidistant, and then stretches the result horizontally into a 2:1 ellipse to compensate for having ...

  7. Mercator projection - Wikipedia

    en.wikipedia.org/wiki/Mercator_projection

    The length of the chord AB is 2(a cos φ) sin ⁠ λ / 2 ⁠. This chord subtends an angle at the centre equal to 2arcsin(cos φ sin ⁠ λ / 2 ⁠) and the great circle distance between A and B is 2a arcsin(cos φ sin ⁠ λ / 2 ⁠).) In the extreme case where the longitudinal separation is 180°, the distance along the parallel is one half ...

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  9. 10 Years Later - Wikipedia

    en.wikipedia.org/wiki/10_Years_Later

    10 Years Later or Ten Years Later may refer to: 10 Years Later (song), a song by Collective Soul; 10 Years Later (TV series), a Georgian TV series;