Thursday, June 19, 2008

Reflection of Light by 2E3 Fong Lai Guan

WHAT IS REFLECTION OF LIGHT?
Reflection of light is light ray that neither transmitted nor absorbed, but bounced back to our eyes from the surface of the medium they encounter. This happened when incident ray approaches a surface of a reflecting medium, such as a mirror, this ray is then bounces back as reflected ray.

TYPE OF REFLECTION
There are three of reflections. They are diffuse, mirror and retort reflection.
Diffuse reflection occurs when light strikes rough surface such as clothing and foliage. These surfaces cause the light to scatter in all direction. No reflection formed.
Mirror reflection occurs when light strikes surface that are smooth and glossy. The light reflects off the surface at an equal, but opposite angle to the source. Reflection is formed.
Retort reflection occurs when surfaces return a portion of directed light back to its source.

USES OF REFLECTION
For looking at yourself, making look bigger than it suppose to and checking of shoplifter etc.
I learn that there are more to learn from the internet than the textbook. The information the textbook is too limited.
Information from:http://www.tpub.com/neets/tm/106-3.htm

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