Minimum deviation |
 |
| Fig 1 - when a ray passes symmetrically through the prism, the angle of deviation, D, is a minimum. The angle D is related to both the prism angle and to the refractive index. |
Minimum deviation |
|
|
| Fig 1 - when a ray passes symmetrically through the prism, the angle of deviation, D, is a minimum. The angle D is related to both the prism angle and to the refractive index. |