- A conventional lighting fixture with a remotely controlled colored changeable filter over the lens. There are three kinds of mechanisms used in color changers, a wheel with lens sized holes into which. Used . colored gells can be placed, multiple fixed filters that can be moved in and out of the beam to mix the colors and a scroller which uses continuous, usually dichroic, filters to mix an even . Used . greater number of colors.
- A box truss is square in shape like a box in cross section and is useful for touring as gear can be hung inside the truss which protects it when loading and takes up less space in the truck.. Used . . Used . ...Circular
- A circular truss is a truss that is shaped like a circle and generally used in large open venues where the stage can be viewed from many angles.. Used . . Used . ...Cyc Light
- Cyc lights, also known as strip lights are long housings typically containing multiple lamps arranged along the length of the instrument and emitting light perpendicular to its length. Lamps are often. Used . covered with individual gels of multiple colors (somet . Used . ...Ohm
- A unit of measurement for the electrical resistance equal to that of a conductor in which a current of one ampere is produced by a potential of one volt across its terminals. One ohm is the resistanc. Used . e in a circuit when one volt maintains a current of one amp. The unit, originally ohma or ohmad, was first used by Charles Tilston Bright and Latimer Clark in 1861 and is still in use today.. Used . ...