Take the 2-minute tour ×
Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. It's 100% free, no registration required.

As photons reach a black hole and begin fall in - is their speed increased as they go down (like a vacuum cleaner does to dust).

share|improve this question

marked as duplicate by Kyle Kanos, Brandon Enright, John Rennie, Jim, Qmechanic Apr 3 at 19:21

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

3  
Possible duplicates: physics.stackexchange.com/q/24319/2451 , physics.stackexchange.com/q/98980/2451 , and links therein. –  Qmechanic Apr 2 at 20:29
    
Also, photons travel at the speed of light, thus their speeds cannot increase. –  Kyle Kanos Apr 3 at 0:52