Posted: Dec 15, 2011 1:19 am
twistor59 wrote:starkiller wrote: Would it travel faster than C since it is traveling at C speed before it's affected by the gravitation field?
same question for a photon.
The key point is the bit I highlighted. In order to answer the question, you have to say exactly how you're going to define and measure the speed. The short answer is that if you measure it in a local inertial frame, then no, the speed must be less than c, and for a photon, the speed will be c.
Ok. Thats where the question and the answer do not make sense to me. If the Speed of the photon is C and it's accelerated by gravity what is the speed? my answer would be >C or else how could a photon traveling C be accelerated.