Vacuum: from art to exact science

NOV 01, 1981

Describes the evolution of modern vacuum pumps and vacuum gauges and their interplay with science and the industry

James M. Lafferty

Vacuum is derived from the Latin word vacuus meaning empty. Absolute vacuum, a space entirely devoid of matter, is a theoretical concept only, never fully achieved by man or Nature. In modern usage, the word vacuum applies to any space at less than atmospheric pressure.

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More about the Authors

James M. Lafferty. General Electric Company, Schenectady, New York.

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