# Mercator projection

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Related to Mercator projection: Transverse Mercator projection

## Mercator projection

an orthomorphic map projection on which parallels and meridians form a rectangular grid, scale being exaggerated with increasing distance from the equator

## Mercator Projection

one of the cartographic projections. The Mercator projection is equiangular and cylindrical. In this projection all the loxodromes—lines on a sphere intersecting all meridians at the same angle—are represented as straight lines inclined at the same angle to the meridians. The projection is widely used in making marine and aeronautical charts, and it is also often used in oblique orientation. The projection was developed and first employed by G. Mercator in 1569.

## Mercator projection

[mər′kād·ər prə‚jek·shən]
(mapping)
A conformal cylindrical map projection in which the surface of a sphere or spheroid, such as the earth, is conceived as developed on a cylinder tangent along the Equator; meridians appear as equally spaced vertical lines, and parallels as horizontal lines drawn farther apart as the latitude increases, such that the correct relationship between latitude and longitude scales at any point is maintained.
References in periodicals archive ?
Besides, let us say that the choice of the Mercator projection has been made on purpose, as its map factor expression (hyperbolic cosine) is one of the best suited for developing a Fourier cosine series (Benard, 2004).
Nevertheless, the Mercator projection is useful for navigators, because a ship that travels in any constant compass direction moves in a straight line on the Mercator projection but in a curved line on any other type of projection.
The transverse Mercator projection is quite similar mathematically to the Lambert, except that the basic line is a meridian of longitude instead of a parallel of latitude and the scale changes in an East-West direction.
Infamous for making Greenland look huge, the Mercator projection benefits Europe because that continent lies more than halfway to the North Pole; the equator-straddling continent of Africa gets short-changed.
Although different projections have since come into fashion, Saarinen reasons that many of the older Mercator projection maps still cover the walls of classrooms around the world, quitely passing on an incorrect view of the continents to students.
In the Mercator projection, what happens to landmasses that are far from the equator?
Keith, of course, knew all about the Transverse Mercator projection, about Sir John Davidson, the Line of Zero Convergence and why two degrees west is the only line of longitude shown on the maps of the Ordnance Survey.
Most of the sky is covered by four Mercator projections that show 6 hours of right ascension apiece between declinations 60[degrees]south and 60[degrees]north.
But the need is great: Mercator projections and traditional curricula diminish the importance of this part of the world.

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