Automotive Glossary

Automotive Glossary

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Electroluminescence (EL) is an optical and electrical phenomenon in which a material emits light in response to an electric current passed through it, or to a strong electric field. It is used on in car entertainment systems and instruments on some vehicles.


A liquid that conducts electricity. Battery acid is a good example.


A magnet formed by a soft iron core and an electrical winding about the core. Becomes a magnet when an electrical current flows through the windings.


See electromagnet.

Electromagnetic Oscillation

Changes from one value to another in a circuit. Usually produces a sine wave output or similar.

Electromagnetic Solenoid

A solenoid (coil of wire) that is used to operate an actuator such as a fuel injection.

Electromagnetic Valve

A valve that is operated by a coil of wire, which becomes magnetic when switched on.


Electrons form the outer shell layers of atoms and orbit the protons and neutrons in the nucleus. The electrons have negative polarity and are electrically negative in opposition to the positive charge of the protons.

Electron Shell

Term used to describe the orbit of electrons round a nucleus.


Electrical systems operated or controlled by semi-conductor devices.

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