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?"
Answer Refraction when light travels from air to a transparent object it is travelling trough a different media of different densities therefore it slows down. If the ray of light
http://wiki.answers.com/Q/What_causes_light_refrac...
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
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Refraction occurs as light passes across the boundary between two medium as the wave is
http://www.chacha.com/question/why-does-light-refr...
Babybec- The word 'why' is a bit of a problem. One way of looking at it is this: The light is obeying Fermat's principle of least time. The word 'principle' means no attempt is made
http://en.allexperts.com/q/Physics-1358/optics-3.h...
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