Why Does Light Refraction Occur?

Answer

Light refraction occurs due to the passage of light through or across the boundary of two media of varying refractive indices. It is at the boundary that the light wave will change direction, which will be accompanied by a change in both speed and wavelength of the wave.
Q&A Related to "Why Does Light Refraction Occur?"
In rooms where a light is on.
http://wiki.answers.com/Q/Why+is+violet+refracted+...
1. Fill a glass about two-thirds of the way with water. Leave at least a few inches at the top of the glass empty so that you will be able to observe the results of the experiment
http://www.ehow.com/how_2086049_bend-light-refract...
For this explanation we need to consider light travelling as a series of 'wave-fronts' rather than as rays (a line of sea waves approaching a beach form straight wave-fronts) Wave-fronts
http://answers.yahoo.com/question/index?qid=201203...
Refraction is a change on the direction of the light when pass from a medium to another one. For example when light pass from air to water, the direction of the light changes on
http://www.quora.com/What-is-refraction-of-light
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