air gap

noun

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.

Nearby words

air force one, air forces, air freight, air freshener, air frost, air gap, air gauge, air guitar, air gun, air hammer, air harbor

Origin of air gap

First recorded in 1895–1900

Examples from the Web for air gap

The devices marked A in this and the following figures are air-gap arresters.
Cyclopedia of Telephony and Telegraphy, Vol. 2|Kempster Miller
Now an air-gap—a gap that is filled with air, between two conductors—is a very strong insulator.
Marvels of Scientific Invention|Thomas W. Corbin
The coil is of large dimensions, capable of passing a spark across an air-gap of ten to twelve inches.
The Romance of Modern Invention|Archibald Williams
By bending this stop the air-gap between the points may be decreased.
The Automobile Storage Battery|O. A. Witte

The Kellogg Company regularly equips its magneto telephones with air-gap arresters of the type shown in Fig. 211.
Cyclopedia of Telephony & Telegraphy Vol. 1|Kempster Miller