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What is Physical Cosmology?
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Lestov16
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What is Physical Cosmology?

Is a "physical cosmology" an equivalent term for "reality", or "universe". If I were to say one could "rewrite cosmology in any way they wish, even if logically impossible", would that be an equivalent statement as saying one has omnipotent control over energy/matter, spacetime, and the physical laws and constants?


Odd question yes.


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Old Post Jul 22nd, 2012 03:37 PM
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Symmetric Chaos
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Cosmology is "the study of the universe" not "the universe".


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Old Post Jul 22nd, 2012 03:44 PM
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Lestov16
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couldn't it mean like a cosmological model, or a religious cosmology, both of which mean universe?


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Old Post Jul 22nd, 2012 03:46 PM
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Omega Vision
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quote: (post)
Originally posted by Lestov16
couldn't it mean like a cosmological model, or a religious cosmology, both of which mean universe?

No they don't, they are representations/ideas of the shape/form of the Universe, not the Universe itself.

It's like saying a charcoal sketch of a person 'means' the person.


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Old Post Jul 22nd, 2012 03:50 PM
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Lestov16
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I know those aren't the whole, or even true cosmologies, but I'm talking about the word in and of itself. If I were talking about a universe's "cosmology", wouldn't I be talking about it's spacetime, matter/energy, and physical laws/constants, as I am talking about it as a totality, including it's beginning and end?


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Old Post Jul 22nd, 2012 03:53 PM
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Omega Vision
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quote: (post)
Originally posted by Lestov16
I know those aren't the whole, or even true cosmologies, but I'm talking about the word in and of itself. If I were talking about a universe's "cosmology", wouldn't I be talking about it's spacetime, matter/energy, and physical laws/constants, as I am talking about it as a totality, including it's beginning and end?

You don't seem to understand the point Sym and I are making.

Cosmology literally means 'study of the cosmos'

Cosmos being Universe.


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Where the faint murmurs now dwindling
echo o’er tide and shore."

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Old Post Jul 22nd, 2012 04:02 PM
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Astner
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Re: What is Physical Cosmology?

And here I thought this was a thread directed towards me. Turns out it has nothing to do with physics. Oh well.

quote: (post)
Originally posted by Lestov16
Is a "physical cosmology" an equivalent term for "reality", or "universe".

No. As explained below. The cosmological model wouldn't suffice either as it's simply a theoretical model based off our understanding of the universe.

quote: (post)
Originally posted by Lestov16
If I were to say one could "rewrite cosmology in any way they wish, even if logically impossible", would that be an equivalent statement as saying one has omnipotent control over energy/matter, spacetime, and the physical laws and constants?

A restriction is a consequence of logic. So if you're not limited by logic then there shouldn't be anything that you wouldn't be able to do. In other words; yes, you would be omnipotent.

Old Post Jul 22nd, 2012 04:17 PM
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Omega Vision
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Re: Re: What is Physical Cosmology?

quote: (post)
Originally posted by Astner
And here I thought this was a thread directed towards me. Turns out it has nothing to do with physics. Oh well.

You think any thread regarding physics is directed at you?


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“Where the longleaf pines are whispering
to him who loved them so.
Where the faint murmurs now dwindling
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-A Grave Epitaph in Santa Rosa County, Florida; I wish I could remember the man's name.

Old Post Jul 22nd, 2012 04:19 PM
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Symmetric Chaos
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Re: Re: Re: What is Physical Cosmology?

quote: (post)
Originally posted by Omega Vision
You think any thread regarding physics is directed at you?


Have you not noticed his enormous ego that makes it treat everything as a direct personal threat?


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Old Post Jul 22nd, 2012 04:32 PM
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Astner
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Re: Re: Re: Re: What is Physical Cosmology?

quote: (post)
Originally posted by Symmetric Chaos
Have you not noticed his enormous ego that makes it treat everything as a direct personal threat?

While I'm not without self-esteem, I am rather humble.

Old Post Jul 22nd, 2012 04:40 PM
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Lestov16
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Re: Re: What is Physical Cosmology?

quote: (post)
Originally posted by Astner
No. As explained below. The cosmological model wouldn't suffice either as it's simply a theoretical model based off our understanding of the universe.


I mean if someone were able to "rewrite the cosmology of their universe", what would that imply? What would they be able to affect, and on what scale?


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Old Post Jul 22nd, 2012 04:43 PM
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Omega Vision
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Re: Re: Re: What is Physical Cosmology?

quote: (post)
Originally posted by Lestov16
I mean if someone were able to "rewrite the cosmology of their universe", what would that imply? What would they be able to affect, and on what scale?

Publishing a very evocative, very convincing new religious/philosophical text. That's what it would mean.

You don't understand what the word means.

Wikipedia defines Physical Cosmology as "the study of the largest-scale structures and dynamics of the universe and is concerned with fundamental questions about its formation and evolution"


__________________

“Where the longleaf pines are whispering
to him who loved them so.
Where the faint murmurs now dwindling
echo o’er tide and shore."

-A Grave Epitaph in Santa Rosa County, Florida; I wish I could remember the man's name.

Last edited by Omega Vision on Jul 22nd, 2012 at 04:58 PM

Old Post Jul 22nd, 2012 04:49 PM
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Lestov16
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I don't know which term to use. What if I said "rewrite physical laws and constants"? Would that include spacetime and matter/energy? I need a term that is all-compassing. Thank you for the assistance


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Old Post Jul 22nd, 2012 05:02 PM
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tsilamini
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"rewrite the physical laws of the universe" would probably work, "constraints" is redundant in that phrase.


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Old Post Jul 22nd, 2012 05:11 PM
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Lestov16
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"physical constants"


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Old Post Jul 22nd, 2012 05:13 PM
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tsilamini
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the laws are what constrain things; or, constraints are a product of the laws


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Old Post Jul 22nd, 2012 05:15 PM
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Lestov16
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But when I say "physical laws", that includes spacetime, and matter and energy?


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Old Post Jul 22nd, 2012 05:37 PM
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Shakyamunison
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There are far more mathematical models of the universe, than there are universes.


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Old Post Jul 22nd, 2012 05:46 PM
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tsilamini
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avoiding a conversation about what phenomenon may or may not be a product of our universe, yes, I believe so


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Old Post Jul 22nd, 2012 05:46 PM
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Lestov16
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So if I were to say "one could rewrite the laws of physics anyway they wished, even if physically, mathematically, or logically impossible", that would intrinsically imply within it "omnipotent control over matter and energy"?


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Old Post Jul 22nd, 2012 06:45 PM
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