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Air Pump
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Description: This air pump contains a glass or metal cylinder called the barrel, in which a piston works. The piston has an opening through it which is closed at the lower end by a valve S opening upwards. The barrel communicates with a passage leading to the centre of a brass surface
Source: A. Privat Deschanel Elementary Treatise on Natural Philosophy (New York: D. Appleton and Company, 1884)179
Keywords: air pump,
Copyright: 2009, Florida Center for Instructional Technology. See license.
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