Saturday, August 14, 2010

What is reflection


What is reflection:
In this blog we are going to learn about two interesting  physics topics what is Reflection and light reflection.
     Reflection is the change in direction (position) of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated.Reflection follow some laws.they are:
1.     The incident and the reflected ray and then normal to the reflection surface at the point of the incidence lie in the same plane.
2.     The angle which the incident ray (i) makes with the normal is equal to the given angle which the reflected ray makes to the same normal.
3.     Light paths are reversible.
 
Now come to the next topic light reflection.
Reflection of light can be further classified as specular reflection and diffuse reflection.

Specular reflection is the perfect, mirror-like reflection of light.
In this type of reflection the reflected rays are also parallel to each other

Diffuse reflection is uniform reflection of light with no directional dependence for the viewer, e.g., a matte surface such as cardboard.

Next blog we will discuss more about various kind of reflection.

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