On 1/24/2014 4:41 PM, Edgar L. Owen wrote:
Brent,
No, my proposed dark matter effect has nothing to do with black holes. Black holes are
caused by accumulations of actual visible matter, not by the Hubble expansion of space...
However I do have a question for you. Since gravitational changes propagate at the speed
of light how does the mass inside a black hole produce gravitational effects outside the
black hole? If light can't come out how can gravitational effects come out?
You are thinking of gravity as mediated by force particles, like photons mediate the EM
forces. But (at least classically) gravity isn't a force, it's just a shape of space and
as I responded to Liz, there's not mass in a black hole, no T_u_v term in the Einstein
equation. It's a vacuum solution. That's why it doesn't make any different what falls in
to create the black hole. The effects outside the event horizon are just that the space
is warped there just *as if* the black hole were a massive object.
Brent
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