I was wondering how long it would take for extra dimensions to be added to the mix. :P

To be honest, I have trouble enough with the math of 3 dimensions plus time, adding a fourth (or more) spatial dimensions to cosmological discussions has always sounded like the scientist's version of a 'God of the Gaps.'

Question: wouldn't a spinning universe slow down with time? As more and more matter, energy, etc get thrown to the outer edges, it would slow down, like the age old example of a figure skater? Arms out, she slows down, arms in, she speeds up.

And if so, does that mean that in the past it was spinning faster. Presumably, at the instant of the Big Bang, it would have been spinning at quite a clip. Possibly even spinning at infinite speed.

Anyway, the moment you bring extra dimensions into the mix I bow out. Way over my head. Let me know when the Nobel Committee calls and I'll be the first to stand up and publicly proclaim that I was wrong, you were right, and the universe is expanding because it is spinning. :)

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Pure mathematics is, in its way, the poetry of logical ideas.

Albert Einstein

The spin would slow down but the matter would still accelerate at the end of the "string". The force(acceleraton) would still increase due to the increasing radius ??

If we assume that Einstein was reasonably close to being right then as the matter at the edge nears the speed of light, mass would increase and time would slow. Might be problematical.

OTOH if the increase in speed of distant objects is due to the increase of space between here and there, relativity still applies.

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Pure mathematics is, in its way, the poetry of logical ideas.

Albert Einstein

If we assume that Einstein was reasonably close to being right then as the matter at the edge nears the speed of light, mass would increase and time would slow. Might be problematical.

Relativistic effects suggests that the matter never reaches the black hole, possibly not for the lifetime of our universe. (Time to us appears to stop for the infalling material.)

Have large black holes been noted where they appear to have accretion disks falling off the red end of the spectrum?

Hence my question earlier about whether the physical effects of that matter upon the rest of the universe are 'smeared out' across time and so are diluted for what we see 'now'...

OTOH if the increase in speed of distant objects is due to the increase of space between here and there, relativity still applies.

Indeed, and we cannot 'see' the dimensions that are additional to those that we normally sense. Unless that is there are some interesting 'side effects' that we can observe...

Keep searchin',
Martin

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See new freedom: Mageia Linux
Take a look for yourself: Linux Format
The Future is what We all make IT (GPLv3)

Energy is conserved, momentum is conserved, angular momentum is conserved. Energy and mass are equivalent.

Or, maybe this one from Monty Python is more appropriate:

"So remember, when you're feeling very small and insecure,
How amazingly unlikely is your birth,
And pray that there's intelligent life somewhere up in space,
'Cause there's bugger all down here on Earth. "

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Energy is conserved, momentum is conserved, angular momentum is conserved. Energy and mass are equivalent.

So, as you approach closer to a black hole, how does that all play out as you progress through the increasing gravity and subsequent ever increasing time dilation?

In the locality of an object, our understanding of physics suggests that those properties are conserved. Especially, "Energy can neither be created nor destroyed, but merely converted".

However, what happens with respect to a non-local observer (and the rest of the universe) for when the "when" of energy is time shifted ('smeared') to be spread into the future?

For example, someone falling into a black hole would feel their descent progress as they would expect. They would feel that time progresses at a steady pace. However, an outside observer watching them fall would see them slow and appear to take forever to pass over the event horizon.


Are relativistic effects surrounding black holes storing up and 'hiding' energy to proportionately ever more slowly release that energy throughout the future?...


Keep searchin',
Martin

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See new freedom: Mageia Linux
Take a look for yourself: Linux Format
The Future is what We all make IT (GPLv3)