Caution
Fill in all input cells.
Choose all parameters unit.
ns and nl can be either numeric values or references of glasses from the catalog. If references of glasses are selected, the calculation considers the refraction indexes of these glasses at the generic wavelengths lam_min and lam_max defined in the page accessible by the general parameters/wavelength link.
Also, if references of glasses are entered, they must be the same for ns and nl.
A is positive and i is algebraic.
Angle positive way is counterclockwise according to the round arrow provided for this purpose.