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The projection found on these maps, dating to 1511, was stated by John Snyder in 1987 to be the same projection as Mercator's. [6] However, given the geometry of a sundial, these maps may well have been based on the similar central cylindrical projection, a limiting case of the gnomonic projection, which is the basis for a sundial. Snyder ...
Map of western Europe, anonymous and undated, preserved in the Ambrosiana Library, dating from the 14th [21] or 15th centuries. In addition there is a detailed description of a nautical Arab map of the Mediterranean in the Encyclopedia of the Egyptian Ibn Fadl Allah al-'Umari, written between 1330 and 1348. [19]
In addition to the traditional maps, Martellus added a number of new maps (tabulae modernae) including maps of Mediterranean islands, Asia Minor, northern Europe, the British Isles and a nautical map of the north African coast. In a preface he claims his maps contain all the ports and coasts newly discovered by the Portuguese. [13]
Mercator's 1569 map was a large planisphere, [3] i.e. a projection of the spherical Earth onto the plane. It was printed in eighteen separate sheets from copper plates engraved by Mercator himself. [4]
The average portolan chart had sixteen such roses (or confluence of lines), spaced out equally around the circumference of a large implicit circle. The cartographer Cresques Abraham of Majorca, in his Catalan Atlas of 1375, was the first to draw an ornate compass rose on a map. By the end of the 15th century, Portuguese cartographers began ...
His nautical charts are among the earliest to map the Mediterranean and ... Elsewhere, the map betrays a decorative rather than practical purpose, particularly in the ...