PEPPER's GHOST

For the Philadelphia, Pennsylvania-based rock ensemble, see Pepper's Ghost (band). For the album by Buckethead, see Pepper's Ghost (album). Pepper's ghost is an illusionary technique used in theater and in some magic tricks. Using a plate glass and special lighting techniques, it can make objects seem to appear or disappear, or make one object seem to "morph" into another.In order for the illusion to work, the viewer must be able to see into the main room, but not into the hidden mirror room. The edge of the glass may be hidden by a cleverly designed pattern in the floor. Both rooms may be identical mirror-images; this approach is useful in making objects seem to appear or disappear. This effect can also be used to make an actor reflected in the mirror appear to turn into an actor behind the mirror (or vice versa). This is the principle behind the Girl-to-Gorilla trick found in many haunted houses. The mirror room may instead be painted black, with only light-coloured objects in it. When light is cast on the objects, they reflect strongly in the glass, making them appear as ghostly images superimposed in the visible room.
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