geodetic level
41Table of the most isolated major summits of North America — Main article: Mountain peaks of North America See also: Table of the highest major summits of North America, Table of the most prominent summits of North America, and Table of the major 100 km summits of North America The following sortable… …
42List of the most prominent summits of North America — Main article: Mountain peaks of North America The following sortable table lists the 200 most topographically prominent mountain peaks of greater North America. This article defines greater North America as the portion of the continental landmass …
43Geographic coordinate system — Map of Earth showing lines of latitude (horizontally) and longitude (vertically), Eckert VI projection; large version (pdf, 3.12MB) …
44List of Colorado fourteeners — Main article: Fourteener See also: 4000 meter peaks of Colorado In mountaineering in the United States, a fourteener (or 14er ) is a mountain peak that exceeds 14,000 feet (4267.2 meters) elevation. (This term is not usually significant …
45Post-glacial rebound — A model of present day mass change due to post glacial rebound and the reloading of the ocean basins with seawater. Blue and purple areas indicate rising due to the removal of the ice sheets. Yellow and red areas indicate falling as mantle… …
46Mountain peaks of North America — Main article: Geography of North America Mount McKinley (Denali) in Alaska is the highest mountain peak of North America. This article comprises three sortable tables of major mountain peaks of greater North America. This article defines grea …
47Abkürzungen/Luftfahrt/S–Z — Dies ist der fünfte Teil der Liste Abkürzungen/Luftfahrt. Liste der Abkürzungen Teil 1 A A Teil 2 B–D B; C; D Teil 3 E–K E; F; G; H; I; J; …
48Surveying — For other uses, see Survey (disambiguation). US Navy Surveyor at work with a leveling instrument …
49Earth radius — The Earth s shape, like that of all major planets, approximates a sphere. A true sphere has a unique radius, but on Earth the distance from the mean sea level at each point on the surface to the center (the radius of the Earth at a point on the… …
50Geoid — The geoid is that equipotential surface which would coincide exactly with the mean ocean surface of the Earth, if the oceans were in equilibrium, at rest, and extended through the continents (such as with very narrow canals). According to C.F.… …
