"OPTICS: REFLECTANCE OF NATURAL LIGHT AT AN INTERFACE. incident reflected \/ /\ \ / air n[i] angle Θ[i] \ / ╔════════════════════════════════╗ ╠ glass interface n[t] ╢ ╚════════════════════════════════╝ R[N] is % reflectance of natural light which is the average of the magnitudes of its perpendiclar R┴ and parallel R║ components. Θ[I] is the angle of incidence of the beam in degrees. N[I] is the index of refraction of air (=1.0)and N[T] is the index of refraction of the glass substrate. *** Answer to Problems *** (c) PCSCC, Inc., 1993 Set N[I]=1, N[T]=1.61 and Θ[I]=75. The reflectance is 27.1%. Type any key to exit. || (a) What percentage of incoming unpolarized light is reflectedat an air-glass interface (N[glass]=1.61) for a beam of natural light incident at 75°? Type comma key to see answers. Type (F2) to return to application file."