# A report onLight and Reflection (physics)                  Common examples include the reflection of light, sound and water waves.

- Reflection (physics)

Newton's theory could be used to predict the reflection of light, but could only explain refraction by incorrectly assuming that light accelerated upon entering a denser medium because the gravitational pull was greater.

- Light ## 2 related topics with Alpha ## Refractive index                    In optics, the refractive index ( refraction index) of an optical medium is a dimensionless number that gives the indication of the light bending ability of that medium.

Apart from the transmitted light there is also a reflected part. ## Normal (geometry)

Object such as a line, ray, or vector that is perpendicular to a given object.

Object such as a line, ray, or vector that is perpendicular to a given object.     The normal is often used in 3D computer graphics (notice the singular, as only one normal will be defined) to determine a surface's orientation toward a light source for flat shading, or the orientation of each of the surface's corners (vertices) to mimic a curved surface with Phong shading.

In reflection of light, the angle of incidence and the angle of reflection are respectively the angle between the normal and the incident ray (on the plane of incidence) and the angle between the normal and the reflected ray.