 | ||
 |  |  |
Air Pump
To use any of the clipart images above (including the thumbnail image in the top left corner), just click and drag the picture to your desktop. You may also control-click (Mac) or right-click (Windows) and choose "Save file to disk" from the pop-up menu. Click here for help downloading and using clipart files.
* A TIFF file is a high-resolution (240 dpi) format. TIFF files should be used only if you are printing the clipart. Do NOT use TIFF files for clipart that will displayed on a computer screen. Click here for help downloading and using TIFF files. File Name: air_pump_28261
Description: "The air pump is an engine by which the air can be pumped out of a vessel, or withdrawn from it. The vessel so exhausted, is called a receive, and the space thus left in the vessel, after withdrawing the air, is called a vacuum. The principles on which the air pump is constructed are readily understood, and are the same in all instruments of this kind, though the form of the instrument itself is often considerably modified. Let R be a glass vessel, or receiver, closed at the top, and open at the bottom, standing on a perfectly smooth surface, which is called the plate of the air pump. Through thie plate is an aperture, which communicates with the inside of the receiver, and the barrel of the pump. The piston rod works air tight through the barrel. At the extremity of the barrel, there is a valve which opens upwards, and is closed as the piston rises." —Comstock, 1850
Source: J. L. Comstock A System of Natural Philosophy: Principles of Mechanics (: Pratt, Woodford, and Company, 1850) 141
Keywords: Air, Pump, Engine, Vessel, Plate, Aperture,
Copyright: 2009, Florida Center for Instructional Technology. See license.
| Main Menu | Site Map | Search | License | Clipart Help |
Clipart ETC is a part of the Educational Technology Clearinghouse and is funded by various grants. Produced by the Florida Center for Instructional Technology, College of Education, University of South Florida. Email the project manager.