Irregular reflection light is light that is reflected off of an uneven, unpredictable surface. This type of reflection occurs when the surface of the material is not flat or regular, such as a rough stone or a rough wall. The reflection is caused by the irregular arrangement of the material’s surface molecules, which results in an unpredictable reflection pattern. The light is reflected according to the Law of Reflection, but the angles of incidence and reflection may not be equal.