Dispersion of Light through a Prism

Initializing live version
Download to Desktop

Requires a Wolfram Notebook System

Interact on desktop, mobile and cloud with the free Wolfram Player or other Wolfram Language products.

This Demonstration shows the dispersion of white light through a prism as the incidence angle is varied.


When a light ray passes from one medium to another at an angle, it refracts (or bends). The refraction of light at the interface is governed by Snell's law. White light is a combination of different colors in the visible spectrum, and different colors have different indexes of refraction. Thus, when the ray of white light passes through a prism, the colors refract at different angles. The frequency variation of the index of refraction has been slightly exaggerated for better graphic representation.

Borosilicate optical glass has an index of refraction varying between 1.51 to 1.53 in the visible range.


Contributed by: Siva Perla (August 2007)
Open content licensed under CC BY-NC-SA




Feedback (field required)
Email (field required) Name
Occupation Organization
Note: Your message & contact information may be shared with the author of any specific Demonstration for which you give feedback.