layer of air

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• Air knife — An air knife is normally used in manufacturing or as the first step in a recursive recycling process to separate lighter or smaller particles from other components for use in later or subsequent steps, post manufacturing parts drying and conveyor …   Wikipedia

• air equivalent — noun : the absorbency of a layer of material in terms of the thickness of a layer of air that would have the same absorbency for the same radiation * * * Physics. a measure of the effectiveness of a material in absorbing nuclear radiation,… …   Useful english dictionary

• air — n. & v. n. 1 an invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen. 2 a the earth s atmosphere. b the free or unconfined space in the atmosphere (birds of the air; in the open air). c the atmosphere as a… …   Useful english dictionary

• Air caster — An air caster is a pneumatic lifting device used to move heavy loads on flat, non porous surfaces. Its operation is similar to a hovercraft, in that it uses a thin layer of air as a way to float a very small distance off the ground. Compressed… …   Wikipedia

• air bearing — noun a bearing in which moving surfaces are kept apart by a layer of air forced between the surfaces …   English new terms dictionary

• air cushion — noun the layer of air supporting a hovercraft or similar vehicle …   English new terms dictionary

• Air pollution dispersion terminology — describes the words and technical terms that have a special meaning to those who work in the field of air pollution dispersion modeling. Governmental environmental protection agencies (local, state, province and national) of many countries have… …   Wikipedia

• Air safety — is a term encompassing the theory, investigation and categorization of flight failures, and the prevention of such failures through regulation, education and training. It can also be applied in the context of campaigns that inform the public as… …   Wikipedia

• Air New Zealand Flight 901 — Most of the wreckage of Flight 901 remains on the slopes of Mount Erebus. This photo, taken on the 25th anniversary in 2004, shows part of the DC 10 s upper fuselage skin with entry door and cabin windows. Part of the opposite side skin, with… …   Wikipedia

• Air pollution — from World War II production Smog over …   Wikipedia

• Air America (airline) — Air America was an American passenger and cargo airline covertly owned and operated by the Central Intelligence Agency (CIA) from 1950 to 1976. It supplied and supported covert operations in Southeast Asia during the Vietnam War. Organization In… …   Wikipedia