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air gap

noun
  1. Electricity. the space between two objects magnetically related, as between the rotor and the stator in a dynamo, or between two objects electrically related, as between the electrode and the tip of a spark plug.
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Origin of air gap

First recorded in 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for air gap

Historical Examples

  • By bending this stop the air-gap between the points may be decreased.

    The Automobile Storage Battery

    O. A. Witte

  • Spark-gap, with the hyphen, means the air-gap between the opposed faces of the electrodes in which sparks are produced.

    The Radio Amateur's Hand Book

    A. Frederick Collins

  • The air-gap is determined by the thickness of the separator between the carbon blocks.

  • The Kellogg Company regularly equips its magneto telephones with air-gap arresters of the type shown in Fig. 211.

  • Fig. 213 suggests the relation between such an impedance and air-gap arrester.