surajc0504
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imagine a photon (travelling with the speed of light) is moving straight towards a huge mass say 10^10 Msun. what will happen to its speed/energy as it comes closer to it?
Does a photon slow down approaching a massive object?
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surajc0504 said:imagine a photon (travelling with the speed of light) is moving straight towards a huge mass say 10^10 Msun. what will happen to its speed/energy as it comes closer to it?
The speed remains constant, the energy increases as it falls into the gravitational potential well of the large mass.
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