"A mirrored sphere, positioned in the middle of a crossbar reflects the image of surrounding space. Two video cameras, attached to each end of the crossbar are looking in at the mirrored surface. The crossbar — now an assembly of mirrored sphere and two cameras — slowly rotates on the turntable with cameras orbiting the sphere. Since each camera sees half of the reflected space, the whole space becomes observable." Steina Vasulka Website, retrieved July 5, 2019.