A projection system for making an object appear and disappear to an
observer on cue. The system remotely activates a reflective axis and a
transmissive axis within a polarized window for making an object on cue
appear and disappear. In one aspect, this system contains a reflective
back plate, a polarized window, and a textured surface. A reflective back
plate is placed behind an object. A polarized window is placed in front
of the object. A textured surface is placed in front of the polarized
window. A polarized light source is placed in front of the textured
surface. If the polarized light is aligned parallel to a reflective axis,
the textured surface is visible to an observer. If the polarized light is
aligned parallel to the transmissive axis, the textured surface and the
object are visible to an observer.