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  1. Naked Science Forum
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  4. Can the vacuum be affected by gravity?
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Can the vacuum be affected by gravity?

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Offline Professor Mega-Mind

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Re: Can the vacuum be affected by gravity?
« Reply #20 on: 23/09/2018 07:56:12 »
Nyuck , nyuck , nyuck !......nyuck .
..........P.M.
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guest45734

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Re: Can the vacuum be affected by gravity?
« Reply #21 on: 23/09/2018 11:54:46 »
Quote from: dead cat on 22/09/2018 22:11:28
Quote from: Bill S on Yesterday at 16:02:03
First, you would need to answer the question: Did anything exist before the BB?  That's a familiar minefield.

Alan Guths expansion theory has some suggestions on what came before the BB which you might be interested in. It didnt start with the outdated super heated singularity. Heres a pop science article from forbes. https://www.forbes.com/sites/startswithabang/2017/09/21/the-big-bang-wasnt-the-beginning-after-all/#5f46a7ac55df.

Here is an article on Lindes ideas on the inflationery universe, he thinks there is a multiverse out there. There may not have been a single big bang. https://alumni.stanford.edu/get/page/magazine/article/?article_id=32024

With inflation theory the concept of faster than light expansion is a bit odd. I wonder if the author was looking from the outside in or from the inside outwards relatively speaking :). Our universe is expanding at approx 3c wrt us on earth. Could the inflationery stage of this theory be viewed in a similar way as nothing special. Beyond the visual horizon of the universe how fast is space moving away from us.

Does any one have a comment on this. Did things accelerate away in the inflationary phase from a big bang flt or did space expand between things, increasing the distance between objects faster than light.

Edit a quick google revealed this paper " abrief history of a multiverse" by Andrei Linde so ive gone for a read https://arxiv.org/pdf/1512.01203.pdf
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Offline Bill S

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Re: Can the vacuum be affected by gravity?
« Reply #22 on: 23/09/2018 16:38:59 »
Quote from: Pete
Yes. Recall Hawking Radiation.

Sorry, Pete, I'm not clear as to what this links to.

BTW; I look forward to seeing you in the "Does gravity have an infinite range?" thread.  Nudge, nudge!
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Offline Professor Mega-Mind

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Re: Can the vacuum be affected by gravity?
« Reply #23 on: 23/09/2018 16:55:33 »
'pparently , it opened , it expanded , it unfolded , but there was nothing there for it to expand away from .  If a bear spits in the woods , does it really stink ? or something like that .  Subjectively , the universe does not expand .  Our big heads expand even as it does .  The light-waves are dusted ( temporally ) as we speed up , and what they show us is a Big Heat , not a Big Boom !
Whoa !  The Mechanic's Guide to the Universe ! Haha haha haha ha !
................P.M.
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Offline Professor Mega-Mind

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Re: Can the vacuum be affected by gravity?
« Reply #24 on: 01/12/2018 00:00:20 »
.........Answering the Question .
 IF one accepts that the vacuum has intrinsic energy , and IF one accepts that the vacuum has virtual mass as a consequence , then you have Dark Matter/Mass .  Thus ; gravity MUST profoundly affect " The Vacuum " .
P.M.
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Offline yor_on

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Re: Can the vacuum be affected by gravity?
« Reply #25 on: 05/12/2018 17:36:45 »
Well you have 'frame dragging', and that one is presumably experimentally confirmed. And as gravity is result of 'energy' not only 'mass', and if we presume a 'infinite energy' at some Big Bang event? Damn it, it shouldn't have happened at all !!!
=

Now, if you want to make it even more confusing you could ask yourself what happens inside a black hole, then look around :) Now, and again, that should change our BB into a BImp (The B_ig Imp_losion)
« Last Edit: 05/12/2018 18:19:49 by yor_on »
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Offline Professor Mega-Mind

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Re: Can the vacuum be affected by gravity?
« Reply #26 on: 06/12/2018 00:51:58 »
Is not Frame Dragging prima facia evidence that the substance of space is far stronger than any of the forces it conveys ?
P.M.
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