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- Light is fixed in a vacum but slower in a medium
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Different types of glass slow light at different levels. This effect is what cause different degrees of refraction AKA refractive index. The more the glass slows light down, the more it can bend light. Fiber optic glass has a relatively high refractive index which allows it to bend light in such a way that the light will not escape the fiber even if the fiber is bent.
See here for a reference on refractive indexes.
http://www.is.kiruna.se/~cjo/d2i/REFRACTION.INDEX3.html
This has nothing to do with exceeding the speed of light "c". - Posted by: george_ou Posted on: 09/28/04 You are currently: a Guest | Members login | Terms of Use
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