Reflection
Tuesday, February 9, 2010 @ 2:36 AM
Reflection occurs when a light ray travels from an object, hits a reflective surface and is redirected to your eye. It is the redirection of the light that causes an image to be produced.
When light hits a reflective surface, it hits at an angle. The angle is known as the Angle of Incidence. This angle is measured from the surface's Normal, which is an imaginary line which is perpendicular to the surface.
When the light ray hits the surface, an Angle of Reflection is formed.The angle of reflection, like the angle of incidence, is also measured from the normal, and they are also both equal.
There are three types of mirrors, they are,
Plain Mirrors:
-flat mirror
Concave Mirrors:
-bends inwards
-images appear enlarged
-used by dentists
Convex Mirrors:
-bends outwards
-images appear smaller and distorted