In this photograph, the light rays are reflecting parallel to the ground and, because the shutters provide a smooth surface, they are going through regular reflection. Regular reflection is also illustrated and proven by looking at the reflected rays. The rays are not going in various directions; Rather, they are parallel to one-another. Also, this picture represents the law of reflection. The law of reflection states that the angle of incidence is equal to the angle of reflection. Although it may appear that the rays are cast at an angle of reflection which is much larger than the angle of incidence, the two angles are actually equal. The key is to look at the angle of the shutters. The rays arrive parallel to the front end of the shutters (the end closest to the window) and are reflected by said end of the shutters at an angle parallel to the angle of the shutters. In other words, both the angle of incidence and the angle of reflection are parallel angles to the surface, making them equal and following the law of reflection.
