Search results
Results from the WOW.Com Content Network
Description: Mercator's 1595 map of the Arctic. Mercator, Gerhard, 1512-1594. "Septentrionalium Terrarum descriptio" [1595]. First state, from his posthumously published atlas, Atlantis pars altera.
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 ...
Modified from azimuthal equal-area equatorial map. Boundary is 2:1 ellipse. Variants are oblique versions, centred on 45°N. 1994 Strebe 1995: Pseudoazimuthal Equal-area Daniel "daan" Strebe Formulated by using other equal-area map projections as transformations. 1921 Winkel tripel: Pseudoazimuthal Compromise Oswald Winkel
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.
Another early example of this system is the world map by ‛Ali b. Ahmad al-Sharafi of Sfax in 1571. [3] The projection appears in many Renaissance maps, and Gerardus Mercator used it for an inset of the north polar regions in sheet 13 and legend 6 of his well-known 1569 map.
Gerardus Mercator's map of the North Pole from 1595 C.G. Zorgdragers map of the North Pole from 1720. As early as the 16th century, many prominent people correctly believed that the North Pole was in a sea, which in the 19th century was called the Polynya or Open Polar Sea. [7]
As with the Mercator projection, the region near the tangent (or secant) point on a Stereographic map remains very close to true scale for an angular distance of a few degrees. In the ellipsoidal model, a stereographic projection tangent to the pole has a scale factor of less than 1.003 at 84° latitude and 1.008 at 80° latitude.
Figure 3. The MGRS grid around the South Pole. Figure 4. The MGRS grid around the North Pole. In the polar regions, a different convention is used. [7] South of 80°S, UPS South (Universal Polar Stereographic) is used instead of a UTM projection. The west half-circle forms a grid zone with designation A; the east half-circle forms one with ...