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Photosynthesis ( / ˌfoʊtəˈsɪnθəsɪs / FOH-tə-SINTH-ə-sis) [1] is a system of biological processes by which photosynthetic organisms, such as most plants, algae, and cyanobacteria, convert light energy, typically from sunlight, into the chemical energy necessary to fuel their activities.
The Cordilleran ice sheet was a major ice sheet that periodically covered large parts of North America during glacial periods over the last ~2.6 million years. Extent [ edit ] The ice extent covered almost all of the continental shelf north of the Strait of Juan de Fuca and south from approximately the southwestern third of the Yukon Territory .
Bhargava cube. In mathematics, in number theory, a Bhargava cube (also called Bhargava's cube) is a configuration consisting of eight integers placed at the eight corners of a cube. [1] This configuration was extensively used by Manjul Bhargava, a Canadian-American Fields Medal winning mathematician, to study the composition laws of binary ...
In geometry, a hyperboloid of revolution, sometimes called a circular hyperboloid, is the surface generated by rotating a hyperbola around one of its principal axes.A hyperboloid is the surface obtained from a hyperboloid of revolution by deforming it by means of directional scalings, or more generally, of an affine transformation.
The beta sheet ( β-sheet, also β-pleated sheet) is a common motif of the regular protein secondary structure. Beta sheets consist of beta strands ( β-strands) connected laterally by at least two or three backbone hydrogen bonds, forming a generally twisted, pleated sheet. A β-strand is a stretch of polypeptide chain typically 3 to 10 amino ...
The 2008 Summer Olympics torch relay route involved 21 countries where the Olympic torch was carried between its lighting in Greece in March 2008 and the Olympic opening ceremony in China 's host city of Beijing in August 2008. The relay took place in four separate legs: in Greece, an international leg, in the Special Administrative Region of ...
Looking west over Dream Lake. Hallett Peak is on the left with the dramatic cliff band and prominent point. The Northcutt-Carter Route is a popular technical climbing route on Hallett Peak in Colorado 's Rocky Mountain National Park. The Northcutt-Carter Route is recognized in the historic climbing text Fifty Classic Climbs of North America. [1]
CubeSat. Ncube-2, a Norwegian CubeSat (10 cm (3.9 in) cube) A CubeSat is a class of small satellite with a form factor of 10 cm (3.9 in) cubes. [1] CubeSats have a mass of no more than 2 kg (4.4 lb) per unit, [2] and often use commercial off-the-shelf (COTS) components for their electronics and structure. CubeSats are deployed into orbit from ...