Light reflects from a smooth surface at the same angle as it hits the surface. For a smooth surface, reflected light rays travel in the same direction. This is called specular reflection.
When light reaches matter it can be reflected, refracted, absorbed, or scattered. Lightbouncing back off a surface is reflected light. ... The extent to which it bends is called the index of refraction. The higher the index of refraction, the more the light bends.
