OPTICAL ILLUSIONS CREATED IN THE ROOM
Look inside. You can see a white light on the projection wall. Now look on the opposite side. You can see three spotlights in three basic colours: red, green, blue. How is it possible that they are forming a white light together? An illusion? Just to give you a hint, a light illusion is formed and the overlapping beam of light is white. This phenomenon is called “Theory Of Colour Addition”.