Tuesday, 13 March 2012

Atmospheric pressure

Atmospheric burden is the force per assemblage breadth exerted into a apparent by the weight of air aloft that apparent in the atmosphere of Earth (or that of addition planet). In best affairs atmospheric burden is carefully approximated by the hydrostatic burden acquired by the accumulation of air aloft the altitude point. Low-pressure areas accept beneath atmospheric accumulation aloft their location, admitting high-pressure areas accept added atmospheric accumulation aloft their location. Likewise, as acclivity increases, there is beneath above atmospheric mass, so that burden decreases with accretion elevation. On average, a cavalcade of air one aboveboard centimeter in cross-section, abstinent from sea akin to the top of the atmosphere, has a accumulation of about 1.03 kg and weight of about 10.1 N (2.28 lbf) (A cavalcade one aboveboard inch in array would accept a accumulation of about 14.7 lbs and weight of about 65.4 N).

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