Disco Ball Light
A mirror ball (also known as a disco ball light or glitter ball) is a roughly spherical
object that reflects light directed at it in many directions, producing
a complex display. Its surface consists of hundreds or thousands of facets, nearly all of approximately the same shape and size, and each having a mirrored surface. Usually it is mounted well above the heads of the people present, suspended from a device that causes it to rotate steadily on a vertical axis,
and illuminated by spotlights, so that stationary viewers experience
beams of light flashing over them, and see myriad spots of light
spinning around the walls of the room.