Optics of the Moon presents methods for interpreting optics of surfaces on the Moon with complicated structures. For example, the book illustrates how phase-ratio techniques can lead to the detection of surface structure anomalies, describes polarimetric studies of the lunar surface and their use, and addresses many other questions relating to the regolith-like surfaces of the Moon, such as why the Moon looks like a ball at a large phase angle and like a disk in full moon, why the lunar surface has slight color variations, and why at large phase angles its polarization degree closely correlates with albedo.