Description The Snell's Law page computes the refraction at the boudary between two materials of different indices n1 and n2. The incident ray in material 1 is incident on the interface at angle θ1 with respect to the surface normal. The ray then refracts at the surface and enters material 2 at an angle of θ2 relative to the optical axis. The ray is deviated by a total angle shown as δ in the figure. n1sin(θ1) = n2sin(θ2)  This page allows you to enter any 3 of the 4 values and compute the fourth. After you fill in the known quantities, select the value you want to calculate by pressing the appropriate equal sign. Note that the ray deviation &delta is computed automatically.  A Note On Units All angles are in degrees. Phone: (860) 276-0450 • Fax: (860) 620-9026 • e-mail: btruax@dld-llc.com dld-llc.com |
