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Posted by Bruce on January 22, 2002 22:19:26 UTC

EM radiation never accelerates or decelerates. The far away observer observes the falling light to slow down as it approaches the event horizon. The local free falling observer measures the local coordinate velocity of the falling light to always be c. These are two different perspectives that have to do with frame of reference. This book has alot of godd explanations based on Einstein's theory of gravity, general relativity. You might find some of the chapters well written and informative.
http://www.mathpages.com/rr/rrtoc.htm

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