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. Since the lenses of their eyes modify reciprocally the paths of the incoming and outgoing light the effect is that the eyes act as a strong retroreflector, sometimes seen at night when walking in wildlands with a flashlight. The structure of these surfaces is such that light is returned in the direction from which it came. In this process (which is also known as phase conjugation), light bounces exactly back in the direction from which it came due to a nonlinear optical process. Some surfaces exhibit retroreflection. The shift in the direction of the radio waves, when it enters medium with different density, is known as refraction. Find more ways to say reflect, along with related words, antonyms and example phrases at, the world's most trusted free thesaurus. One common model for diffuse reflection is Lambertian reflectance, in which the light is reflected with equal luminance (in photometry) or radiance (in radiometry) in all directions, as defined by Lambert's cosine law. As the waves interact at low angle with the surface of this tunnel they are reflected toward the focus point (or toward another interaction with the tunnel surface, eventually being directed to the detector at the focus). Reflective: given to or marked by long, quiet thinking. A conventional reflector would be useless as the X-rays would simply pass through the intended reflector. When these electrons oscillate with the incident light, the phase difference between their radiation field and the incident field is π (180°), so the forward radiation cancels the incident light, and backward radiation is just the reflected light. Refraction means the shift in direction of the radio waves, when it enters medium with different density. When light reflects off of a material with higher refractive index than the medium in which is traveling, it undergoes a 180° phase shift. In reflection, the waves bounce off the surface. This partial retro-reflection is created by the refractive properties of the curved droplet's surface and reflective properties at the backside of the droplet. In the diagram, a light ray PO strikes a vertical mirror at point O, and the reflected ray is OQ. Common examples include the reflection of light, sound and water waves. In classical electrodynamics, light is considered as an electromagnetic wave, which is described by Maxwell's equations. This is analogous to the way impedance mismatch in an electric circuit causes reflection of signals. If the reflecting surface is very smooth, the reflection of light that occurs is called specular or regular reflection.