Acetate: Transparent
material on which information
for an overhead projector is
written. Available in sheets or
rolls.
Ambient Light: Level of
illumination from natural
lighting sources already
existing in an environment.
Amplifier: Device which
enables sound signal to be
amplified.
Aperture: Width/height of
actual slide; film frame
dimensions.
Auditorium Lens
(Long Throw): Projection
lens used for long distances.
Boom: Adjustable support
for positioning microphones or
lighting fixtures.
Carousel Tray: Circular
holder used for projecting 35mm
slides.
CAT-5: A type of cable
used in Ethernet networks. It is
also known as simply a “patch
cable”.
CD-ROM: A compact disk
that can hold up to 700
Megabytes of data. The data can
only be read from the disk, not
erased or recorded over.
Dissolve Unit: Device
that activates fade-out and
fade-in of slides from one
projector to another by
regulating the voltage sent to
projector lamps. Dove is the
most popular unit used.
Distortion: Unclear audio
signal that results from giving
too much power to a speaker or
amplifier.
DVD-ROM: This is much
like a CD-ROM except that it can
store up to 12 times the amount
of data, 4.7GB-18GB typically.
Ethernet: A very popular
type of network. Sometimes
people refer to NIC cards as
Ethernet net cards and a network
connection as an Ethernet
connection. Also known as “10 or
100 Base T”.
Feedback: Regeneration of
sound from audio speakers back
through the audio source,
causing a hum or high-pitched
sound. |
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