Mercator

From ICA Map Projections
Revision as of 23:19, 19 March 2006 by DaanStrebe (Talk)

Jump to: navigation, search

Projection name: Mercator

English Français Deutsch 日本語 Русский Español Polski Português
Mercator メルカートル


Chronology of projection development

  • 1511: Erhard Etzlaub (Nuremburg) creates maps using an accurate Mercator projection. He records nothing of his method.
  • 1537: Pedro Nunes (Portugal) describes the rhumb.
  • 1566 (ca): Nunes describes for the first time a way to approximate a large-scale projection that keeps rhumbs straight, but does not construct any maps based on it. Whether he realized the principle could be generalized to a small-scale projection remains unclear.
  • 1569: Gerardus Mercator (Flanders; probably christened Gerhard Kremer) produces a small-scale map based on the loxodromic principle, and promotes it for the purpose of navigation. His method of construction remains unknown.
  • 1599: Edward Wright (London) describes the exact mathematics of the spherical Mercator projection for the first time, although his description amounts to an infinite series rather than the modern, closed form obtained from the calculus.
  • 1600 (ca): Thomas Harriot (London), in unpublished manuscripts, develops the modern logarithmic form of the projection.
  • 1610: Wright publishes accurate tables for the construction of the Mercator projection, unaware of Harriot’s unpublished work.
  • 1645: Henry Bond (London) publishes the modern logarithmic form of the projection in Norwood’s Epitome of Navigation, also unaware of Harriot’s unpublished work.