Problem 5.177

A narrow beam of natural light with wavelength \(\lambda=\) \(=589\) nm falls normally on the surface of a Wollaston polarizing prism made of Iceland spar as shown in Fig. 5.32. The optical axes of the two parts of the prism are mutually perpendicular. Find the angle \(\delta\) between the directions of the beams behind the prism if the angle \(\theta\) is equal to \(30^{\circ}\).