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COLOR SCROLLER
A mechanical device usually used as an accessory to a conventional lighting fixture to remotely change the color of the light produced by the unit. A color scrollor gel stringconsists of individual color filters taped end to end to form a long string. Gel strings typically contain between 10 and 32 different colors. The color scroller utilizes a remote controlled stepping motorand sensors to be able to correctly position the scroll so that any individual color is in the beam of light. Scrolls can also usually be moved continuously from one end to the other at varying speeds.
COLOR TEMPERATURE
- Measurement of the color quality of a lamp measured in Kelvin degrees.
- A method of measuring the Whiteness of a light source. The Higher the color temperature the Whiter the lamp.
- The measurement of a the color quality of a lamp measured in degrees Kelvin. A standard 1000 watt tungsten halogen theatrical lamp has a color temperature of around 3200. Kelvin.
- A measure of the "warmth" or "coolness" of light sources and colors. Measured in degrees Kelvin. A higher color temperature light source will
- appear whiter (colder). The human brain automatically compensates for different color temperatures - a film or video camera cannotand thus what we see as white may appear to have a blue or green tint when no color correction is used for video. Most video cameras have a "White Balance" control to make color temperature adjustmentsto ensure white looks white on camera.
Daylight is approximately 5600°KTungsten Halogen is approx. 3200°K and standard incandescent lamps are 2800°K. Many discharge light sources are in use in modern theatrical productions using discharge followspots or moving lights - color correction filters are used to balance the color temperatures.
COLOR WHEEL
Dichroic glass filters used in illuminators to change the color of the light conducted through the fibers.
COMPANY SWITCH
A disconnect or electrical connecting/switching device in a theater or venue which is traditionally used by a touring company to connect all of its touring electrical equipment. Portable lighting dimming systems are usually "tied-into" the company switch.
COMPLEMENTARY COLORS
Pairs of colors whichwhen additively mixedcombine to produce white light. Examples are red + cyangreen + magentaand yellow + blue.
COMPRESSOR
Device to increase sound volume and eliminate peaks in the signal.
COMPUTER MEMORY CONSOLE
A lighting console in which cues can be stored and executed electronically. Computer consoles also employ many show editing and cue building functions which make the cue writing or programming process easier. Computer consoles can be divided into three basic types: cue-only type consolestheatrical "classic" tracking consolesand automated fixture control consoles.
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