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A
ADVANCE BAR
Lighting bar positioned just downstage of the proscenium arch. Also known as
ANTI PROSCENIUM.
AERO
A type of high intensity Par lamp that derives its name from its use as an
aircraft landing lamp. The true Aero is 28V and 250W, although there are
many variations. The lamp has a very tight beam.
AIRCRAFT CABLE
A stainless steel stranded cable commonly used for theatrical rigging.
A.J. / AJ
n. Jargon for an Adjustable Spanner. (UK) Known in the US as a C Wrench
(short for Crescent Wrench).
A.L.D.
Association of Lighting Designers.
ALPHAPACK
Portable 3 way dimmer pack manufactured by Zero 88.
AMPERE
The standard unit for measurement of electrical current passing through a
circuit (usually abbreviated to AMP). Written as "I" in equations. Cables,
fuses and switches are designated by their current carrying capacity.
(Following phrase refers to UK standards). Square pin plugs are rated at 13
Amps maximum and Round pin plugs at either 5 Amps or 15 Amps maximum,
depending on the size of the pins. If a cable rated at 5 Amps is used with a
load of 15 Amps (for example), the cable will overheat and possibly catch
fire.
AMPLIFIER
Used to power speakers
AMALGAM CFL
Amalgam technology (two or three metals alloyed with mercury) is used in
compact fluorescent lamps to control mercury vapor pressure, thus
controlling lumen output.
AMBIENT LIGHTING
Lighting that is designed to provide a substantially uniform light level
throughout an area, exclusive of any provision for special local
requirements.
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