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Originally posted by ChaoticOrder
reply to post by LilDudeissocool
Interesting thread... what you explain is how mass, velocity and time are deeply interrelated... but I still don't see a reason for concluding gravity creates time. The mass gets larger as you go faster, producing more gravity, and that might cause gravity time dilation as you say... you even said yourself for any object which could reach the speed of light time would stop, which is counter-intuitive if one is to accept your theory that gravity creates time, because more gravity should mean more time. This implies mass and the velocity of any mass interact with space-time in a very observable way, but it does not imply they create space-time. It just implies mass can alter space-time... and that's only logical if one is to assume mass is made from braided space-time as in LQG theory.edit on 4-6-2012 by ChaoticOrder because: (no reason given)
en.wikipedia.org... That means time is passing more slowly, and if there was enough gravity time could theoretically stop completely. The same is true with increase velocity, and with that mass is gained thus more gravity. Velocity creates gravity, are they mutually inclusive when it comes to time dilation? What is it that affects time, Could it be simply be gravity which is the determining factor? Velocity across space allows matter to depress an ever larger indentation in the fabric of space with increase of velocity without adding matter, and time dilation occurs according to scale. If matter is added to other matter without increasing velocity a depression in the fabric of space is increased, and gravitational time dilation occurs according to scale. Do you see any correlating factors between the two affecting time dilation?
Gravitational time dilation is the effect of time passing at different rates in regions of different gravitational potential; the lower the gravitational potential (the closer the clock is to the source of gravitation), the more slowly time passes
Originally posted by CLPrime
reply to post by spy66
Microwave background hemisphere? Technically, there is no such thing. The CMB is pervasive throughout all of space, it's not just a hemisphere (or even a sphere, for that matter).
Professor Krauss is saying that the energy found in the quantum vacuum causes an expansion of space - that is, it has negative pressure, which precisely mimics the cosmological constant. Matter or empty space, it doesn't matter...vacuum energy will cause space to expand. The only matter will do is locally counteract that expansion with its own gravity.
Originally posted by CLPrime
reply to post by spy66
Vacuum energy causes space to expand the same way gravity warps space. Space-time is a maleable 4-dimensional manifold. The negative pressure of vacuum energy causes it to expand.
Do you know what a metric is?
Originally posted by spy66
If your are talking about a 4 dimensional manifold.
Originally posted by ImaFungi
reply to post by LilDudeissocool
I will watch in a second,,,,, but what was being talked about was an infinite realm of space.....i dont see how space intrinsically is "space-time" without the addition of all the energy/matter of the universe.... I think the way the groupings of high powered and forceful energy reacts with each other in the medium of space creates effects in space - time ,,,,, like how air can be wind,,,,,, the spinning and revolving and torquing of the stuff of the universe gives the space between the stuff interesting properties.... is that not right?
the hang up for me is either space and energy/matter are not very closely related or they are.... if they are not related then energy/matter is the something while space is the nothing, the something occupies,,, if they are related then matter/energy can be birthed from space, for matter/energy is a brand of "whatever it is that space actually is"...
Originally posted by CLPrime
Originally posted by spy66
If your are talking about a 4 dimensional manifold.
Did I stutter?
That's what I said...a 4 dimensional manifold.
A 4-dimensional manifold is infinite in all 4 dimensions.
In any dimension other than 4, a compact topological manifold has only a finite number of essentially distinct PL or smooth structures. In dimension 4, compact manifolds can have a countable infinite number of non-diffeomorphic smooth structures.
Originally posted by LilDudeissocool
reply to post by ImaFungi
Just thinking here, if you think of expanding space in terms of a copier scanner scanning a V printed on a the document beginning scanned you can visualize what expanding space is really all about. With a scanner it is scanning in two dimensions, but is slicing the data one dimension at a time. The entire V printed on the document represents expanding matter in space from beginning to end. Where the scanning bar is at any given point represents the present. The sheet of paper represents the entire complete fourth dimension. It does all exist now, but only one segment at a time in 3D. We are trapped in the third dimension so we are unable to observe the document, again, the document representing all of the fourth dimension.