Re: space: gravity's effect on time and expansion?

Dear Ben Shoemate:

On Feb 4, 2:03 pm, Ben Shoemate <ben.shoem...@xxxxxxxxx> wrote:
...
Thanks for the response. I have been looking around
online trying to find where someone explains
"gravitational time dilation". What I would like to
find is the 2 extremes - I have seen claims that at
the event horizon of a black hole - time may stop
(relative to us although that makes me wonder how
matter can actually still "fall in" without time
passing)

Time does not stop at the event horizon. Light emitted just as
something crosses the event horizon is essentially "infinitely" red
shifted and takes "forver" to climb out of the gravity well (even
assuming the BH does not swallow even more matter / energy, swell, and
grab this light too).

but if a black hole is one extreme where 1 sec on
earth is equal to infinite time at the black hole,

Not.

and 1 second on earth is equal to
.99999999999999999999 seconds in earth orbit,

Inverse, and few decimal points too long, I think. More time passes
outside the well, not less.

what is the other extreme?

Not very much different than high Earth orbit. 0.000000001% maybe.

If you have a continuum of relative time:

Black hole event-horizon  >  star surface  >
 earth > earth orbit > inner-stellar space >
inner-galactic space > remotest spot in
universe

what is the relative difference in the "pace"
of time along this continuum (compared to
earth-time)?

Problem is, you cannot orbit at the event horizon (radius 2M), you
cannot receive signals from it, and you cannot hover near it (with
less than infinite energy). The closest stable orbit is circular at
radius 6M, and this orbit also has the distinction of having an
orbital speed of a significant fraction of c. So becomes slower
still, just not stopped.

infinity:1 (time stops) > 2:1 (slow motion,
half-time) > 1:1 (same) > 1:0.99.. (slightly
faster) > 1:0.5 (double time) > 1:0.25 (4x time) >
1:0.000...1 (super fast)

I'm hoping I can eventually word my question in a
way that will get others to comment or to point
me to something on the web that addresses this -
I'm thinking that I must be a common amature
mistake in understanding the effect of time
dilation and that as you said - maybe the maximum
effect is orders or magnitude smaller than I think.

Not so much the "maximum effect", but the difference between "minimum
effect" and Earth's surface will be a few years out of 14.7 billion
years. And will there be some matter orbitting at 6M around some
black hole that will have the Big Bang happen some few months ago?
Could have been, if such BH did not continue to consume matter, and
swallow those things at 6M too.

I guess I am just not sure what you are trying to get to.

David A. Smith
.

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