spark gap

noun

, Electricity.

1. a space between two electrodes, across which a discharge of electricity may take place.
2. the electrodes and the space between, considered as a unit: used in ignition systems.

spark gap

noun

1. the space between two electrodes across which a spark can jump Sometimes shortened togap

spark gap

1. A gap in an otherwise closed electric circuit across which a discharge occurs at a prescribed voltage. The discharge often causes ionization of the surrounding gas and thereby very high temperatures, and can be exploited, as in spark plugs, to ignite engine fuel in a combustion chamber.

Word History and Origins

Origin of spark gap¹

First recorded in 1885–90

Example Sentences

A spark gap in a vacuum, connected with a free end of wire, gave a continuous discharge.

From Project Gutenberg

The secondary charges a condenser until its potential becomes high enough to produce a discharge across a spark gap, SG.

From Project Gutenberg

By lengthening the wires between the spark gap and the camera the light is allowed to arrive first.

From Project Gutenberg

Almost immediately after Dawson disappeared the crash of the spark across the spark-gap and up the wires was heard.

From Project Gutenberg

The crash of his call soon sounded at the spark-gap and quivered on its lightning way up the aerials.

From Project Gutenberg