(a) given an interface between clear tissue (i. e. water) n_1 = 1.33 and glass (n_g = 1.5), compute the transmission angle for a beam incident in the water at 45 degree. if the transmitted beam is reversed, so that it impinges on the interface from the glass side, calculate what the transmitted angle will be through the tissue. does this make sense? explain.
(b) using matlab, or some other software, plot (r_ = r_ ^2) and (r_p = r_p^2) as a function of the input angle, theta_i for a glass (n_t = 1.5) and air (n_t - 1.0) interface. explain what it means.