Custom Reflection Professional Stable Optical Polygonal Glass Prism
Prism, in optics, a piece of glass or other transparent material cut with precise angles and plane faces, useful for analyzing and reflecting light. An ordinary triangular prism can separate white light into its constituent colours, called a spectrum.
Prisms can be made from any clear compound and are generally cut with specially angled facets. The defining optical property of prisms is that they bend light. The material that the prism is made from and the number and angle of the facets affect how light coming through the prism is reflected, refracted and dispersed.