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Circulation (UK Duo)
Circulation may refer to: Science and technology * Atmospheric circulation, the large-scale movement of air * Circulation (physics), the path integral of the fluid velocity around a closed curve in a fluid flow field * Circulatory system, a biological organ system whose primary function is to move substances to and from cells * Circulation problem, a generalization of network flow problems * Circulation (architecture), the flow of people through a building * Circulation (currency), all currency held by consumers and businesses, but not by financial institutions and governments * Exhaust gas recirculation, a nitrogen oxide reduction technique used in most gasoline and diesel engines * Library circulation, the activities around the lending of library books and other material to users of a lending library * Ocean circulation, the large-scale movement of water * Rhetorical circulation, the ways that texts and discourses move through time and space Other uses * Print circulation, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atmospheric Circulation
Atmospheric circulation is the large-scale movement of Atmosphere of Earth, air and together with ocean circulation is the means by which thermal energy is redistributed on the surface of the Earth. The Earth's atmospheric circulation varies from year to year, but the large-scale structure of its circulation remains fairly constant. The smaller-scale weather systems – middle latitudes, mid-latitude low-pressure area, depressions, or tropical convective cells – occur chaotically, and long-range weather predictions of those cannot be made beyond ten days in practice, or a month in theory (see chaos theory and the butterfly effect). The Earth's weather is a consequence of its illumination by the Sun and the laws of thermodynamics. The atmospheric circulation can be viewed as a heat engine driven by the Sun's energy and whose heat sink, energy sink, ultimately, is the blackness of space. The work produced by that engine causes the motion of the masses of air, and in that process ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
