Purpose:Show the view of a slide through a prism and argue about color theory.
Description:A 60 degree prism is mounted in front of a slide projector lens such that it can be rotated. The slide used is that of a plain white surface with some marking to show orientation. When projected so that the prism disperses, it adds color only to the edges of the field of the projected slide At another prism angle a mirror image of the slide is seen due to internal reflection in the prism.
Because of the great contrast, the print on the slide cannot be seen in the photograph.