A large piece of fabric often used as a backdrop for lighting effects is referred to as what?

The term "cyc" refers to a large piece of fabric, often white or light-colored, primarily used as a backdrop in theatrical productions to create an illusion of expanded space or to enhance lighting effects. When lit from different colors or angles, a cyc can produce a variety of atmospheric effects, serving as a canvas for washes of color or projections. This versatility makes it a favored choice in many lighting designs, contributing significantly to the overall mood and aesthetic of a performance.

In contrast, a scrim is a fabric that becomes transparent when lit from the front but opaque when lit from behind, often used for specific effects rather than as a primary backdrop. A traveler refers to a type of curtain that opens and closes by sliding along a track, primarily used for masking or dividing stage areas. A backdrop typically refers to any cloth set at the rear of the stage, but it may not possess the specific qualities that make a cyc particularly effective for lighting techniques.