The bouncing back of light is known as reflection of light which enables us to see .Through reflection of light we can see all kinds of normal matter in the known Universe .There are two kinds of reflection:
Irregular reflection: The reflection of light on a irregular surface like a rock .Its the reflection which are observed mostly in every place .It is also called diffuse reflection .
Regular reflection: The reflection of light on a regular surface or a smooth surface like the mirrors these are not observed in every place .
Science and technology 