The reflection of light can be roughly categorized into two types of reflection. Specular reflection is defined as light REFLECTED from a smooth surface at a definite angle, WHEREAS diffuse reflection is produced by rough surfaces that tend to reflect light in all directionsthe principle that when a ray of light, radar pulse, or the like, is reflected from a smooth surface the angle of reflection is EQUAL to the angle of incidence, and the incident ray, the reflected ray, and the normal to the surface at the point of incidence all lie in the same plane.Any mirror obeys the three laws of reflection, flat, CURVED, convex or concave.The two laws of reflection are as follows: ... The incidenct ray, the reflected ray, and the normal to the reflecting interface at the point of incidence all lie in the same plane. 2. The angle of incidence equals the angle of reflectionCommon examples include the reflection of light, sound and water waves. The law of reflection SAYS that for specular reflection the angle at which the wave is incident on the surface equals the angle at which it is reflected. Mirrors exhibit specular reflection.