'''Reflection''' is the change in direction of [[energy]] from one point to another so that its motion is turned back toward the point of its origination. Common examples include the reflection of [[light]], [[sound]] and water waves. The ''law of reflection'' says that for smooth surfaces, the angle at which light is incident on the surface equals the angle at which it is reflected. | '''Reflection''' is the change in direction of [[energy]] from one point to another so that its motion is turned back toward the point of its origination. Common examples include the reflection of [[light]], [[sound]] and water waves. The ''law of reflection'' says that for smooth surfaces, the angle at which light is incident on the surface equals the angle at which it is reflected. |