Light of (angular) frequency ro passes from medium 1, through a slab (thickness d) of medium 2, and into medium 3 (for instance, from water through glass into air, as in Fig. 9.27). Show that the transmission coefficient for normal incidence is given by

T-1 = 1 4n1n3 (n +n3) + Water O (n-n)(n-n) sin n 0 Glass Air nwd 2 d)]. C