A light projector illuminates the back wall of a room, while two heating elements placed at different levels produce two shadows. One heating element casts a shadow at eye level in front of the projector; the other one casts a shadow on the ground. A colour filter below the upper heating element creates a blue surface underneath the top shadow. The heat from the heating element creates a shadowy image that flutters on the wall.
|Light projector, colour filter, heating elements|