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Post Closed as "Duplicate" by Níckolas Alves, Dale, Jon Custer, joseph h, John Rennie general-relativity
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Níckolas Alves
Níckolas Alves
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I know that every thingeverything that is shaped from gravity force is rotating,and gravity and gravity is a central force.but, but I want to know how we can understand that a black hole has unan angular momentum?by By which sign from the black hole?and And I want to know how we can understand the electromagnetic field of a black hole,by by knowing that no photon can escape from a black hole. Does photon Do photons exist in general relativity? How do we define the electric force between two electrons in general relativity؟doesrelativity? Does it have the same formula that was in classical physics?and And how is this force is propagated?  (by photons?)

Thanks

I know that every thing that is shaped from gravity force is rotating,and gravity is a central force.but I want to know how we can understand that a black hole has un angular momentum?by which sign from the black hole?and I want to know how we can understand the electromagnetic field of a black hole,by knowing that no photon can escape from a black hole. Does photon exist in general relativity? How we define the electric force between two electrons in general relativity؟does it have the same formula that was in classical physics?and how this force is propagated?(by photons?)

Thanks

I know that everything that is shaped from gravity force is rotating, and gravity is a central force, but I want to know how we can understand that a black hole has an angular momentum? By which sign from the black hole? And I want to know how we can understand the electromagnetic field of a black hole, by knowing that no photon can escape from a black hole. Do photons exist in general relativity? How do we define the electric force between two electrons in general relativity? Does it have the same formula that was in classical physics? And how is this force propagated?  (by photons?)

Thanks

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user324499
user324499
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How can a black hole have electromagnetic field?

I know that every thing that is shaped from gravity force is rotating,and gravity is a central force.but I want to know how we can understand that a black hole has un angular momentum?by which sign from the black hole?and I want to know how we can understand the electromagnetic field of a black hole,by knowing that no photon can escape from a black hole. Does photon exist in general relativity? How we define the electric force between two electrons in general relativity؟does it have the same formula that was in classical physics?and how this force is propagated?(by photons?)

Thanks