71. The plane-polarized light whose wavelength in vacuum λ = 589 nm is incident on Iceland spar plate perpendicular to its optical axis. Taking the refractive indices of Iceland spar for the ordinary and extraordinary rays, respectively, n0 = 1,66 and ne = 1,49, determine the wavelengths of these rays in the crystal.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)