Quote:
Originally Posted by PORKAV
Hi,Would you please help me in this case:
According to relativity , the clocks work slower in a gravitational field and the stronger the field is, the slower the clock works.It means in the frame of an observer far from the event horizon of a blackhole, it takes an infinite time for an object(a spacecraft for example) to reach the event horizon so
the mass of a blackhole should never increase during the time because in our frame no object has fallen onto the event horizon.
Is this true? 
|
This is a popular misconception.It just
appear to have not fallen, in fact it has already fallen there and so the gravitational field changes accordingly with increasing mass.
Gravity fields are curvatures in spacetime, more mass = deeper curvature.
Hope that helps.
BTW sorry if my grammar is very bad in some posts, I don't know how to properly formulate some things as I am a foreign speaker.