Fig. 1

Refraction of a ray of monochromatic light passing through a triangular prism with an apex angle α and refractive index n1. i, incident angle; e, emergent angle; δ, deviation angle; n0 and n2, refractive indices of the media.

Refraction of a ray of monochromatic light passing through a triangular prism with an apex angle α and refractive index n1. i, incident angle; e, emergent angle; δ, deviation angle; n0 and n2, refractive indices of the media.