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glossary
 
A-BC-DE-FG-KL-NO-ST-Z



G

Gel
A plastic colour media for modifying a beam of light.

Gobo
A silhouette pattern used to project images from an ellipsoidal spotlight.

Grid
The structure above the stage, usually used to support the battens.

Ground Cyc
A cyclorama light used from the floor.

Ground Row
Lighting strips aimed up from the base of a cyclorama or drop. The masking piece concealing these strips.

H

Hard Edge
A beam pattern edge that is very clear and distinguishable.

Hard Wired
A term used to describe an electrical connection that is intended to be permanent.

Hot Patching
Putting a circuit into a dimmer or hot pocket while it is on.

Hot Restrike
A term applied to an ignitor that will hot start an arc lamp.

House Lights
General lighting provided for the audience area.

House Position
A lighting position located in Front-Of-House.

I

Image
The actual design of a pattern. The reproduction of an object formed by an optical system.

Incandescent
A term used to describe a lamp, or a luminaire that utilizes such a lamp, that employs the incandescence of a filament such as a light source.

Inky
A small fresnel spotlight with a 1.5" to 3" lens.

Instrument
A lighting unit.

Iris
An arrangement of thin, movable, heat-resistant metal plates (leaves) that form an adjustable circular opening.

J

Jumper
An electric cable and connector assembly.

K

Kelvin
In the metric system, a graduated scale used to measure temperature with 0O (-2730C) being the total absence of heat (absolute zero). Each degree is the same magnitude as a degree in the centigrade scale. This is the unit of temperature used to designate the colour temperature of a light source.

Key Light
The principal source of light which establishes the character of the actor and mood of the scene.

Kilowatt (kW)
1000 watts.

kVA
Abbreviation for Kilovolt-Ampere.


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