Pepper's Projector
The Pepper's Projector is a visual trick that uses optics to make your brain believe that there is a ghostly figure/ illusion projecting in front of you.
Experimental Steps
Video
Optics Experimental Review
What did we learn?
The Pepper’s Ghost projector experiment demonstrates how light can be reflected to create a visual illusion that appears three-dimensional. By placing translucent paper or another reflective surface at a 45-degree angle above a screen, light from the image is reflected toward the viewer’s eyes. This setup follows the law of reflection, which states that the angle of incidence equals the angle of reflection. As a result, the image on the screen is reflected at the same angle it strikes the surface, making it appear as if it is floating in midair. This simple experiment shows how the law of reflection can be used to create realistic optical illusions.


