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K2, at 8,611 metres (28,251 ft) above sea level, is the second-highest mountain on Earth, after Mount Everest at 8,849 metres (29,032 ft). [3] It lies in the Karakoram range, partially in the Gilgit-Baltistan region of Pakistan -administered Kashmir and partially in the China -administered Trans-Karakoram Tract in the Taxkorgan Tajik Autonomous ...
The Bottleneck is a narrow couloir, which is overhung by seracs from the ice field east of the summit. The couloir is located only 400 m (1,300 ft) below the summit, and climbers have to traverse about 100 m (330 ft) exposed to the seracs to pass it. Due to the height of 8,200 m (26,900 ft), and the steepness of 50 to 60 degrees, this stretch ...
Coordinates Country (disputed claims in italics) First Ascent Notes m ft 1 Mount Everest: Sagarmatha, Chomolungma: 8,848.86 29,032 8,848 infinite Mahalangur: China • Nepal: 1953: Highest peak in the world: 2 K2
Cartesian chart. Euclidean plane E2. Bipolar coordinates. Biangular coordinates Two-center bipolar coordinates. Euclidean space E3. Polar spherical chart. Cylindrical chart. Elliptical cylindrical, hyperbolic cylindrical, parabolic cylindrical charts. Parabolic chart.
Atlas (topology) In mathematics, particularly topology, an atlas is a concept used to describe a manifold. An atlas consists of individual charts that, roughly speaking, describe individual regions of the manifold. In general, the notion of atlas underlies the formal definition of a manifold and related structures such as vector bundles and ...
Stellar classification. In astronomy, stellar classification is the classification of stars based on their spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colors interspersed with spectral lines.
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 ...
The World Geographic Reference System ( GEOREF) is a geocode, a grid-based method of specifying locations on the surface of the Earth. GEOREF is essentially based on the geographic system of latitude and longitude, but using a simpler and more flexible notation. GEOREF was used primarily in aeronautical charts for air navigation, [1 ...