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A vertical datum is a reference surface for vertical positions, such as the elevations of Earth features including terrain, bathymetry, water level, and human-made structures. An approximate definition of sea level is the datum WGS 84 , an ellipsoid , whereas a more accurate definition is Earth Gravitational Model 2008 (EGM2008), using at least ...
e. The School of Diplomacy ( simplified Chinese: 纵 横 家; traditional Chinese: 縱橫家; pinyin: Zōng héng Jiā ), or the School of Vertical and Horizontal Alliances was a political and diplomatic clique during the Warring States period of Chinese history (476-220 BCE). According to the Book of Han, the school was one of the Nine Schools ...
Cartesian coordinate system with a circle of radius 2 centered at the origin marked in red. The equation of a circle is (x − a)2 + (y − b)2 = r2 where a and b are the coordinates of the center (a, b) and r is the radius. Cartesian coordinates are named for René Descartes, whose invention of them in the 17th century revolutionized ...
Edmund Gustav Albrecht Husserl (/ ˈ h ʊ s ɜːr l / HUUSS-url, [14] [15] [16] US also / ˈ h ʊ s ər əl / HUUSS-ər-əl, [17] German: [ˈɛtmʊnt ˈhʊsɐl]; [18] 8 April 1859 – 27 April 1938 [19]) was an Austrian-German philosopher and mathematician who established the school of phenomenology.
Page orientation is the way in which a rectangular page is oriented for normal viewing. The two most common types of orientation are portrait and landscape. [ 1] The term "portrait orientation" comes from visual art terminology and describes the dimensions used to capture a person's face and upper body in a picture; in such images, the height ...
The zipper system, also known as "vertical parity" or the "zebra system", [ 1][ 2] is an electoral mechanism intended to enforce gender parity in countries using party-list proportional representation with closed lists. It requires that parties alternate between candidates of either gender on their candidate lists, meaning that 50% of the ...
The most common horizontal position representation is latitude and longitude. The parameters are intuitive and well known, and are thus suited for communicating a position to humans, e.g. using a position plot. However, latitude and longitude should be used with care in mathematical expressions (including calculations in computer programs).
The word horizontal is derived from the Latin horizon, which derives from the Greek ὁρῐ́ζων, meaning 'separating' or 'marking a boundary'. [2] The word vertical is derived from the late Latin verticalis, which is from the same root as vertex, meaning 'highest point' or more literally the 'turning point' such as in a whirlpool.