Science > Physics > Article: EXPANSION OF UNIVERSE SOLE EXPLANATION OF RED SHIFT
| Topic: |
Science > Physics |
| User: |
"Robert Karl Stonjek" |
| Date: |
16 Jul 2005 01:09:36 AM |
| Object: |
Article: EXPANSION OF UNIVERSE SOLE EXPLANATION OF RED SHIFT |
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EXPANSION OF UNIVERSE SOLE EXPLANATION OF RED SHIFT
Are the distant nebulae redder than the nearer ones because they are =
receding with enormous speed or, as many like to believe, is there some =
other explanation, such as attributing the red shift to the action of =
electrons in free space?=20
Prof. Roy Kennedy and Walter Barkas of the University of Washington =
announced at the meeting of the Pacific division of the American =
Association for the Advancement of Science that they had tested the =
matter experimentally and found that electrons could not be held =
responsible because there are not enough of them.=20
They used a special instrument called an interferometer, designed by =
Prof. Kennedy, which is capable of detecting a change of a billionth of =
an inch in a foot. Still no effect of electrons could be seen even with =
millions of millions present. Prof. R.C. Tolman, new president of the =
Pacific division of the Association, announced that he and Dr. Edwin P. =
Hubble, recent winner of the Barnard medal for his work on the red =
shift, were practically convinced that no known effect other then =
recession of the nebulae was competent to account for the observations =
of the red shift.
From scienceNews, July 13, 1935, issue
http://www.sciencenews.org/articles/20050716/timeline.asp
Comment:
Some revisionists (on this forum and on others) have tried to claim that =
"we knew all along that it was space that was expanding" or similar =
wishful thinking. This report in a science magazine contemporary to the =
events reports that scientists believed that it was objects travelling =
at high velocity (away from the observer) that was the cause of the red =
shift. They were quite wrong.
Edwin Hubble did not discover the redshift but was the first to =
correlate the amount of redshift with the distance of stellar objects.
RC Tolman practically invented the field of relativistic thermodynamics. =
His books, such as "The Principles of Statistical Mechanics" and =
"Relativity Thermodynamics and Cosmology" are still available and well =
worth occupying the shelf of the serious relativist/thermodynamicist.
--=20
Posted by
Robert Karl Stonjek
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<DIV><FONT face=3DArial size=3D2><FONT face=3D"Times New Roman" =
size=3D4>
<H2><FONT size=3D4>EXPANSION OF UNIVERSE SOLE EXPLANATION OF RED =
SHIFT</FONT></H2>
<P><FONT size=3D3>Are the distant nebulae redder than the nearer ones =
because they=20
are receding with enormous speed or, as many like to believe, is there =
some=20
other explanation, such as attributing the red shift to the action of =
electrons=20
in free space? </FONT>
<P><FONT size=3D3>Prof. Roy Kennedy and Walter Barkas of the University =
of=20
Washington announced at the meeting of the Pacific division of the =
American=20
Association for the Advancement of Science that they had tested the =
matter=20
experimentally and found that electrons could not be held responsible =
because=20
there are not enough of them. </FONT>
<P><FONT size=3D3>They used a special instrument called an =
interferometer,=20
designed by Prof. Kennedy, which is capable of detecting a change of a =
billionth=20
of an inch in a foot. Still no effect of electrons could be seen even =
with=20
millions of millions present. Prof. R.C. Tolman, new president of the =
Pacific=20
division of the Association, announced that he and Dr. Edwin P. Hubble, =
recent=20
winner of the Barnard medal for his work on the red shift, were =
practically=20
convinced that no known effect other then recession of the nebulae was =
competent=20
to account for the observations of the red shift.</FONT></P>
<P>From scienceNews, July 13, 1935, issue<BR><A=20
href=3D"http://www.sciencenews.org/articles/20050716/timeline.asp">http:/=
/www.sciencenews.org/articles/20050716/timeline.asp</A><FONT=20
face=3DArial size=3D2><BR><BR>Comment:<BR>Some revisionists (on this =
forum and on=20
others) have tried to claim that "<EM>we knew all along that it was =
space that=20
was expanding</EM>" or similar wishful thinking. This report in a =
science=20
magazine contemporary to the events reports that scientists believed =
that it was=20
objects travelling at high velocity (away from the observer) that was =
the cause=20
of the red shift. They were quite wrong.<BR><BR>Edwin Hubble did =
not=20
discover the redshift but was the first to correlate the amount of =
redshift with=20
the distance of stellar objects.<BR>RC Tolman practically invented the =
field of=20
relativistic thermodynamics. His books, such as "The Principles of =
Statistical Mechanics" and "Relativity Thermodynamics and Cosmology" are =
still=20
available and well worth occupying the shelf of the serious=20
relativist/thermodynamicist.</FONT><FONT face=3DArial =
size=3D2><BR></FONT><FONT=20
face=3DArial size=3D2><BR>-- <BR>Posted by<BR>Robert Karl=20
Stonjek</FONT></P></FONT></DIV></FONT></BODY></HTML>
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| User: "Sam Wormley" |
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| Title: Re: Article: EXPANSION OF UNIVERSE SOLE EXPLANATION OF RED SHIFT |
16 Jul 2005 07:29:45 AM |
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Move a lightbulb in the lab.
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| User: "Tom Roberts" |
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| Title: Re: Article: EXPANSION OF UNIVERSE SOLE EXPLANATION OF RED SHIFT |
16 Jul 2005 08:25:37 PM |
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Robert Karl Stonjek wrote:
EXPANSION OF UNIVERSE SOLE EXPLANATION OF RED SHIFT
From scienceNews, July 13, 1935, issue
[...]
Perhaps you should read things more recent than that.
Tom Roberts tjroberts@lucent.com
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| User: "Bjoern Feuerbacher" |
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| Title: Re: Article: EXPANSION OF UNIVERSE SOLE EXPLANATION OF RED SHIFT |
18 Jul 2005 04:34:40 AM |
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Robert Karl Stonjek wrote:
[snip all]
Oh, hi, here you are! I've been waiting for you in the old thread for
about a week now! I *still* would like you to support that claim of you:
If these points were all predicted by exactly the same theory
before > they were discovered then that would be impressive, but the
reality > is that there are more than 20 models still in circulation
and none > of them predicted all the above.
Well? What are these "more than 20 models"? Will you tell me finally,
or will you admit that you were just blowing hot air?
Bye,
Bjoern
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| User: "Robert Karl Stonjek" |
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| Title: Re: Article: EXPANSION OF UNIVERSE SOLE EXPLANATION OF RED SHIFT |
21 Jul 2005 08:29:29 AM |
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"Bjoern Feuerbacher" <bjoern.feuerbacher@pci.uni-heidelberg.de> wrote in
message news:dbft3g$era$2@news.urz.uni-heidelberg.de...
Robert Karl Stonjek wrote:
[snip all]
Oh, hi, here you are! I've been waiting for you in the old thread for
about a week now! I *still* would like you to support that claim of you:
If these points were all predicted by exactly the same theory
before > they were discovered then that would be impressive, but the
reality > is that there are more than 20 models still in circulation
and none > of them predicted all the above.
Well? What are these "more than 20 models"? Will you tell me finally,
or will you admit that you were just blowing hot air?
Bye,
Bjoern
I didn't mean to keep you away from your colleagues and family, but now that
I see how you hang on my every word I'd better address your concerns.
I was distracted when the replacement motherboard of my main computer
arrived - I found reassembling the computer a somewhat more pressing
project. I've only just gotten around to reinstalling the usegroups (can
send news alerts without being subscribed).
Anyway, its all up and running now, as far as I've tested. Still have some
peripherals to test - A3 printer, scanner, Epson R800 printer etc etc.
The early models up till Gamow weren't included under the Big Bang theory
but there have been various attempts to rehash them, such as the primeval
atom and later versions such as Sternglass' 'revised primeval atom' theory
that considers an electron-positron pair in such a high energy bound orbit
that the total energy-mass is equal to that of the entire universe.
The inflation theory of Guth relied on a grand unifying theory which in turn
relied on some formulation of string theory being correct. To give an idea
of how many possible string theories there are: "In the summer of 1989,
Henry Tye, a Super-String theorist from Cornell University, developed a
program to generate Super-String theories. You input a rough description of
your universe, tell it the dimensions of spacetime and something of how your
world should look. Sometimes the program doesn't succeed, but other times a
number of theories pass for your description [from 'The Life of the Cosmos'
by Lee Smolin] Considering how much more complicated Super String theory is
than General Relativity, it is clear that Einstein could also have used a
computer to formulate general relativity and could even come up with
possible solutions to his five space model." I quoted myself from another
note which in turn was probably quoted from 'Hyperspace' by Michio Kaku.
From another note:
"Working with the same raw data we have models of the Hot Big Bang, numerous
inflation theories, and other models such as 'cosmic evolution' (Lee
Smolin), Revised primeval atom (Sternglass), chaotic inflation and numerous
multiple universe theories.
All these theories differ in some fundamental way or other from each other.
This includes the anticipated expansion rate. The weight of theories, as
far as I can tell, favour a continuing accelerating expansion because it
space that is expanding and there isn't enough matter in the universe to
slow it down.
One is reminded of the original Inflation theory as postulated by Allan
Guth. It predicted that the Grand Unifying Theory was right (of the day)
and that it would soon be complete and the predictions it made tested.
The original inflation theory required protons to decay and monopoles to be
real and not just theoretical objects. Accept for one false alarm in 1975
published in Scientific American, Monopoles haven't been discovered.
Further, huge swimming pool sized tanks buried deep underground (disused
mine
shafts are favoured) were supposed to detect the decay of a proton. The
longer it takes, the longer the calculated half life. They were hoping to
see their first event in a couple of years. Twenty years on, no events and
the minimum half-life of the proton is getting incredibly long."
There are also plenty of BBTs that comfortably cross the border into
philosophy, such as Andrei Linde, an expatriate Russian American, who was a
co-founder of the inflation theory. He says (P.101 'The End of Science' by
John Horgan) that "In a way, the old steady state theory of Hoyle was
right." His theory is that another universe could evolve from an atom on
your nose (for instance) and that would be a Big Bang in another universe.
There are also plenty of theories about the first moments of the universe -
did it begin etc, as well as speculation about the end. These have narrowed
down in recent years, but the total number of hypothesis that once flew the
Big Bang banner is mind boggling - 20 is too small a number.
As for the main stream, I don't know what they are up to these days. A 1998
book I just picked off a shelf lists, under inflation theory, OLD Inflation
(Guth etc); NEW Inflation (no potential barrier, so phase transition is
second order); CHAOTIC Inflation; STOCHASTIC Inflation; MODIFIED GRAVITY;
EXTENDED Inflation (Theories based on Brans-Dicke Modified Gravity); and so
it goes on. I'm not sure what books might list all the different Big Bang
Models/theories. Quite a few are listed 'The New Cosmology' by Peter Coles,
which is only an introductory level (general) book on cosmology, handy for
discussion such as this (especially when it was a bit fresher :(
The sad truth is that BBTs have been put up by scientists from a variety of
fields, and who knows which ones will be taken seriously and incorporated.
Quantum theory seemed to be quite remote from large scale structure, but
when we decided that the universe might have been about the size of a pea
and then much smaller still, quantum theory was the obvious tool, especially
if a unifying theory could be made to work.
Multiple universe theories are even harder to stomach - the original
formulation only considered quantum events (I seem to recall reading this in
a book by Wheeler "Geons...") where it was perfectly plausible. But entire
universes in parallel? Is science trying to outdo Steven Spielberg?
So, can you show, in the midst of all this, that there are only one or two
generally accepted Big Bang formulations? It is my understanding that only
around 40% of physicists find inflation plausible at all - editor of the
journal Nature for 25 years, Sir John Maddox, in his book "What Remains to
be Discovered" points out some of the general weaknesses in the Big Bang
theory and especially with inflation - he doesn't seem to hold the whole
concept in a very high regard at all.
--
Kind Regards
Robert Karl Stonjek
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| User: "Bjoern Feuerbacher" |
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| Title: Re: Article: EXPANSION OF UNIVERSE SOLE EXPLANATION OF RED SHIFT |
21 Jul 2005 10:03:49 AM |
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Robert Karl Stonjek wrote:
"Bjoern Feuerbacher" <bjoern.feuerbacher@pci.uni-heidelberg.de> wrote in
message news:dbft3g$era$2@news.urz.uni-heidelberg.de...
Robert Karl Stonjek wrote:
[snip all]
Oh, hi, here you are! I've been waiting for you in the old thread for
about a week now! I *still* would like you to support that claim of you:
If these points were all predicted by exactly the same theory
before they were discovered then that would be impressive, but the
reality is that there are more than 20 models still in circulation
and none of them predicted all the above.
Well? What are these "more than 20 models"? Will you tell me finally,
or will you admit that you were just blowing hot air?
Bye,
Bjoern
I didn't mean to keep you away from your colleagues and family, but now that
I see how you hang on my every word I'd better address your concerns.
Not on your "every word" - just on your most ridiculous claims.
I was distracted when the replacement motherboard of my main computer
arrived - I found reassembling the computer a somewhat more pressing
project. I've only just gotten around to reinstalling the usegroups (can
send news alerts without being subscribed).
Anyway, its all up and running now, as far as I've tested. Still have some
peripherals to test - A3 printer, scanner, Epson R800 printer etc etc.
Sounds like "the dog ate my homework".
The early models up till Gamow weren't included under the Big Bang theory
but there have been various attempts to rehash them, such as the primeval
atom and later versions such as Sternglass' 'revised primeval atom' theory
that considers an electron-positron pair in such a high energy bound orbit
that the total energy-mass is equal to that of the entire universe.
I have no idea what you are talking about. References, please.
Especially for the assertion that these models have been "rehashed".
And for the assertion that any of these models predicted any of the
observations I originally lined out.
The inflation theory of Guth relied on a grand unifying theory which in turn
relied on some formulation of string theory being correct.
Irrelevant. The main idea and math of inflation theory doesn't need to
rely on any other theory, so it doesn't matter that one special
version of it relied on something for which we do not know if it is
correct yet.
Additionally, none of the evidences I listed had anything to do with
inflation; they are all based on developments in the universe long
after the inflationary period. They would still support the BBT if it
could be shown that inflation theory is utterly wrong.
To give an idea
of how many possible string theories there are: "In the summer of 1989,
Henry Tye, a Super-String theorist from Cornell University, developed a
program to generate Super-String theories. You input a rough description of
your universe, tell it the dimensions of spacetime and something of how your
world should look. Sometimes the program doesn't succeed, but other times a
number of theories pass for your description [from 'The Life of the Cosmos'
by Lee Smolin] Considering how much more complicated Super String theory is
than General Relativity, it is clear that Einstein could also have used a
computer to formulate general relativity and could even come up with
possible solutions to his five space model." I quoted myself from another
note which in turn was probably quoted from 'Hyperspace' by Michio Kaku.
Nice. Even if this were relevant (which it isn't), you still have nit
shown that one needs *several* of these theories in order to make all
the predictions I listed, that one alone is not necessary.
That was your original claim, remember?
From another note:
"Working with the same raw data we have models of the Hot Big Bang, numerous
inflation theories, and other models such as 'cosmic evolution' (Lee
Smolin), Revised primeval atom (Sternglass), chaotic inflation and numerous
multiple universe theories.
Still not supporting your original claim above that there is not one
single theory making all the predictions I listed.
All these theories differ in some fundamental way or other from each other.
This includes the anticipated expansion rate. The weight of theories, as
far as I can tell, favour a continuing accelerating expansion because it
space that is expanding and there isn't enough matter in the universe to
slow it down.
Wow. Thanks for showing that you don't understand some of the most
basic things about the BBT. Hint: no matter how few matter there is,
the universe will *always* get slowed down. The acceleration can
*only* be explained by the presence of Dark Energy.
[snip a lot of totally irrelevant stuff]
There are also plenty of theories about the first moments of the universe -
did it begin etc, as well as speculation about the end. These have narrowed
down in recent years, but the total number of hypothesis that once flew the
Big Bang banner is mind boggling - 20 is too small a number.
But your original claim was that there is not one of those 20 or more
theories which made all the predictions I listed. You *still* have not
supported that claim. (and all you have brought up so far was totally
irrelevant to all these predictions, see above)
As for the main stream, I don't know what they are up to these days.
If you are that ignorant about what cosmologists actually say today,
you should stop attacking the BBT. Hint: Lambda CDM.
[snip more irrelevant stuff on inflation; wow, you really have no
clue what this is all about...]
The sad truth is that BBTs have been put up by scientists from a variety of
fields, and who knows which ones will be taken seriously and incorporated.
Nonsense. Apparently you confuse inflation theories with BBTs.
Quantum theory seemed to be quite remote from large scale structure, but
when we decided that the universe might have been about the size of a pea
and then much smaller still,
Oh my goodness. Thanks for showing yet again that you don't know some
of the most basic facts of the BBT.
Try this: <http://www.astro.ucla.edu/~wright/infpoint.html>
quantum theory was the obvious tool, especially
if a unifying theory could be made to work.
Multiple universe theories are even harder to stomach - the original
formulation only considered quantum events (I seem to recall reading this in
a book by Wheeler "Geons...") where it was perfectly plausible. But entire
universes in parallel? Is science trying to outdo Steven Spielberg?
So if something looks strange to you, it has to be wrong?
So, can you show, in the midst of all this, that there are only one or two
generally accepted Big Bang formulations?
Lambda CDM.
For the very earliest times, there are differing inflation theories
(and other suggestions, true) - BUT THAT IS WHOLLY IRRELEVANT TO YOUR
ORIGINAL CLAIM ABOVE!
It is my understanding that only
around 40% of physicists find inflation plausible at all
40% of all physicists or 40% of those who have actually studied
cosmology? If it's the first, why should I bother? That would be like
pointing out that there are lots of engineers who don't accept
evolution.
- editor of the
journal Nature for 25 years, Sir John Maddox, in his book "What Remains to
be Discovered" points out some of the general weaknesses in the Big Bang
theory and especially with inflation - he doesn't seem to hold the whole
concept in a very high regard at all.
Are you trying to argue from authority?
What qualifications in cosmology does Maddox have?
Bye,
Bjoern
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| User: "" |
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| Title: Re: Article: EXPANSION OF UNIVERSE SOLE EXPLANATION OF RED SHIFT |
21 Jul 2005 11:11:09 AM |
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All these theories differ in some fundamental way or other from each other.
This includes the anticipated expansion rate. The weight of theories, as
far as I can tell, favour a continuing accelerating expansion because it
space that is expanding and there isn't enough matter in the universe to
slow it down.
Wow. Thanks for showing that you don't understand >some of the most
basic things about the BBT. Hint: no matter how >few matter there is,
the universe will *always* get slowed down. The >acceleration can
*only* be explained by the presence of Dark Energy.
Wrong. The observed acceleration of the far reached regions of the
universe can be due to matters moving radially away from the point of
the BB. In that case, no dark energy is required.
Ken Seto
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| User: "Robert Karl Stonjek" |
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| Title: Re: Article: EXPANSION OF UNIVERSE SOLE EXPLANATION OF RED SHIFT |
23 Jul 2005 07:02:40 AM |
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The early models up till Gamow weren't included under the Big Bang
theory
but there have been various attempts to rehash them, such as the
primeval
atom and later versions such as Sternglass' 'revised primeval atom'
theory
that considers an electron-positron pair in such a high energy bound
orbit
that the total energy-mass is equal to that of the entire universe.
I have no idea what you are talking about. References, please.
Especially for the assertion that these models have been "rehashed".
And for the assertion that any of these models predicted any of the
observations I originally lined out.
The book "Before the Big Bang: The Origins of the Universe" by Ernest J
Sternglass outlines the rehashed primeval atom. All the papers etc that the
new theory relies on or has published are mentioned in the bibliography.
The inflation theory of Guth relied on a grand unifying theory which in
turn
relied on some formulation of string theory being correct.
Irrelevant. The main idea and math of inflation theory doesn't need to
rely on any other theory, so it doesn't matter that one special
version of it relied on something for which we do not know if it is
correct yet.
RKS:
That was not just "one special version", it was the original version.
For the universe to be as compact as its it as 10^-40 seconds, there can't
be intrinsically separate forces and particles - some sort of unifying
theory must be correct. But this is an assumption, just like the entire
inflation theory is based on some outrageous assumptions about the nature of
gravity.
Earlier BBTs were quite plausible. But as the flaws in each successive
model are revealed, ever less plausible, ever more exotic models are put up,
inflation is but one of these.
Additionally, none of the evidences I listed had anything to do with
inflation; they are all based on developments in the universe long
after the inflationary period. They would still support the BBT if it
could be shown that inflation theory is utterly wrong.
There is no viable model, that I am aware of, that does not include
inflation. Therefore, for the BB to have occurred, inflation theory must
also be correct.
To give an idea
of how many possible string theories there are: "In the summer of 1989,
Henry Tye, a Super-String theorist from Cornell University, developed a
program to generate Super-String theories. You input a rough description
of
your universe, tell it the dimensions of spacetime and something of how
your
world should look. Sometimes the program doesn't succeed, but other
times a
number of theories pass for your description [from 'The Life of the
Cosmos'
by Lee Smolin] Considering how much more complicated Super String theory
is
than General Relativity, it is clear that Einstein could also have used
a
computer to formulate general relativity and could even come up with
possible solutions to his five space model." I quoted myself from
another
note which in turn was probably quoted from 'Hyperspace' by Michio Kaku.
Nice. Even if this were relevant (which it isn't), you still have not
shown that one needs *several* of these theories in order to make all
the predictions I listed, that one alone is not necessary.
That was your original claim, remember?
I think you meant "that one alone is not sufficient." Whenever a new bit of
evidence is about to be revealed, a new observation etc, the BBT fragments
into numerous competing versions that spread their predictions across the
entire range of plausible observations. Take the ripples in the background
radiation. It seems that every man and his dog had a different formulation
that predicted different amplitudes of the ripples. As it turned out, they
were all wrong, the amplitude of the ripples was much smaller than expected.
When there is no new data about, the number of variations might reduce down
to one or two dominant versions and a few lesser variations. But if, for
instance, a gravitational wave detector was set into place or some new way
of observing the universe becomes available, there will be another
fragmentation as numerous scientists try to cash in on the paper publishing
bonanza ahead of the new observations, and like a lottery, some variation is
bound to be right and this is put up as further proof of the BBT. And if
no-one gets it right, as with the ripples, BBT theorists will claim that
they have been vindicated anyway.
In 'Wrinkles in Time: The Imprint of Creation' by George Smoot, he spoke of
'heroes of the BBT' (p.42), 'threats to the BBT' (p.17) and speaks of the
effort to save the BBT as an heroic effort (p.18). Very objective - clearly
there was only one result he was interested in. He speaks about the search
for the ripples as if they must be found to save the theory. He is
pragmatic enough to know that if they find something imaginary (wishful
thinking) that they will be found out by subsequent scientific
investigation. So he is very careful to verify his findings ahead of
publication.
And Smoot is actually observing something real, the light that can be
measured. What hope do we have when this emotion is applied to purely
theoretical models - are the theorists open to other ideas, other possible
models? Sure, 1% effort just to show that the alternatives are non-viable.
In my opinion, rationality goes out the window when emotion is the guide for
scientific theory. It is tolerable where verifiable experiments or
observations can be performed and emotion, whether they wish to admit it or
not, has driven many a scientist to some pretty amazing discoveries. But
when pure theory is called upon, the theory toward which the passion is
directed is the one that will always appear to be more plausible, even if we
have to make up additional never observed dark matter, epicycles, expanding
space or dark energy to make the theory work.
All these theories differ in some fundamental way or other from each
other.
This includes the anticipated expansion rate. The weight of theories,
as
far as I can tell, favour a continuing accelerating expansion because it
space that is expanding and there isn't enough matter in the universe to
slow it down.
Wow. Thanks for showing that you don't understand some of the most
basic things about the BBT. Hint: no matter how few matter there is,
the universe will *always* get slowed down. The acceleration can
*only* be explained by the presence of Dark Energy.
RKS:
Don't forget Dark Time. If all else fails you can always make up a theory
about that as well. Actually, Andreas Albrecht and Joao Mangueijo put up a
theory to challenge inflation. In their theory, the speed of light can
change its rate in the early universe. This is reported in NewScientist,
24th of July, 1999. That's not far off dark time.
There are also plenty of theories about the first moments of the
universe -
did it begin etc, as well as speculation about the end. These have
narrowed
down in recent years, but the total number of hypothesis that once flew
the
Big Bang banner is mind boggling - 20 is too small a number.
But your original claim was that there is not one of those 20 or more
theories which made all the predictions I listed. You *still* have not
supported that claim. (and all you have brought up so far was totally
irrelevant to all these predictions, see above)
You mentioned the background radiation. That was predicted by the Gamow
model which is no longer used. Predicting something that has already
occurred and can not be repeated only shows consistency in a model, it
doesn't prove it.
Which model correctly predicted the amplitude of the ripples in the
background radiation, the accelerating expansion of the universe and the
existence of dark energy?
And when was that theory formulated?
As for the main stream, I don't know what they are up to these days.
If you are that ignorant about what cosmologists actually say today,
you should stop attacking the BBT. Hint: Lambda CDM.
So that's your cosmic flavour. Easy enough to call in experts to pull it
apart:-
"These are the simplest assumptions for a consistent, physical model of
cosmology. However, ?CDM is a model. Cosmologists anticipate that not all of
them will not be borne out exactly when more is known about the fundamental
physics. In particular, cosmic inflation predicts spatial curvature at the
level of one part in ten or one hundred thousand. It would also be
surprising if the temperature of dark matter were absolute zero. Moreover,
?CDM says nothing about the fundamental physical origin of dark matter, dark
energy and the nearly scale-invariant spectrum of primordial curvature
perturbations: in that sense, it is merely a useful parameterization of
ignorance."
http://en.wikipedia.org/wiki/Lambda-CDM_model
It seems there are at least four 'popular' CDM models, "These are high
resolution simulations of cosmological volumes of dark matter carried out in
four different cosmologies: ?CDM and Lambda CDM, SCDM and OCDM" (The Nature
of Galaxy Bias and Clustering A. J. Benson, S. Cole, C. S. Frenk, C. M.
Baugh, and C. G. Lace 1999).
SNIa data have reached to high enough redshift to see the expected turnover
in Lambda models, enough to exclude grey dust (now we worry about
"replenishing grey dust"), and to infer w = -1.0 ± 0.1; see
arXiv:astro-ph/0402512
RKS:
Why is the university physics course page referring to "Lambda ModelSSSS".
I thought you were advocating the "One Model Policy"??
I can't find any mention of how old this model/s is, but it looks to me like
an invention of the late 90s. No doubt theorists, or their apologists, still
claim that the theory correctly predicted the CMBR, discovered more than 30
years earlier.
If we talk of the BBT/Lambda-CDM we are talking about a model just a few
years old, not a model that was cooked up by Gamow or anticipated by
Einstein.
The sad truth is that BBTs have been put up by scientists from a variety
of
fields, and who knows which ones will be taken seriously and
incorporated.
Nonsense. Apparently you confuse inflation theories with BBTs.
Lambda CDM includes inflation - are you trying to devest yourself of the
shakier parts of the model??
Quantum theory seemed to be quite remote from large scale structure, but
when we decided that the universe might have been about the size of a
pea
and then much smaller still,
Oh my goodness. Thanks for showing yet again that you don't know some
of the most basic facts of the BBT.
Try this: <http://www.astro.ucla.edu/~wright/infpoint.html>
Interesting. None of the models I read about, mostly in '98, included an
infinite universe, so this concept must be quite recent. Infinite space was
included in some but not all models. Some theorist hypothesised that space
was somehow created ahead of the expansion. Now I see what Andrei Linde
meant when he said that "In a way, the old steady state theory of Hoyle was
right."
I'd like to know just when the 'all the matter squished' changed to 'some of
the matter squished'. I'm aware that inflation theory of Guth had multiple
universes where the visible universe was just one small part, but in his
model ALL the universe (visible and otherwise) began together in one
confined place.
Or is the story that Linde like to tell about a an atom in your nose could
potentially expand into another (visible) universe correct?
--
Kind Regards
Robert Karl Stonjek
.
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| User: "Bjoern Feuerbacher" |
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| Title: Re: Article: EXPANSION OF UNIVERSE SOLE EXPLANATION OF RED SHIFT |
26 Jul 2005 04:47:36 AM |
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Robert Karl Stonjek wrote:
The early models up till Gamow weren't included under the Big Bang
theory
but there have been various attempts to rehash them, such as the
primeval
atom and later versions such as Sternglass' 'revised primeval atom'
theory
that considers an electron-positron pair in such a high energy bound
orbit
that the total energy-mass is equal to that of the entire universe.
I have no idea what you are talking about. References, please.
Especially for the assertion that these models have been "rehashed".
And for the assertion that any of these models predicted any of the
observations I originally lined out.
The book "Before the Big Bang: The Origins of the Universe" by Ernest J
Sternglass outlines the rehashed primeval atom. All the papers etc that the
new theory relies on or has published are mentioned in the bibliography.
That book is not available in my university library. Could you provide
some of the references, please?
A search for "Sternglass" in the astro-ph section of the Arxiv gives
no results. A search there for "primeval atom" also gives no results.
So apparently Mr. Sternglass and his ideas are not very well-known in
astronomy...
A Google search reveals that he is a "professor of radiological
physics". Doesn't sound as if he is qualified to talk about cosmology...
And judging from the reviews the book got at Amazon, it contains a lot
of nonsense.
BTW, you have not given any evidence that any of these models
predicted any of the observations I originally lined out.
The inflation theory of Guth relied on a grand unifying theory which in
turn relied on some formulation of string theory being correct.
Irrelevant. The main idea and math of inflation theory doesn't need to
rely on any other theory, so it doesn't matter that one special
version of it relied on something for which we do not know if it is
correct yet.
RKS:
That was not just "one special version", it was the original version.
Clear, but still irrelevant.
For the universe to be as compact as its it as 10^-40 seconds, there can't
be intrinsically separate forces and particles - some sort of unifying
theory must be correct. But this is an assumption, just like the entire
inflation theory is based on some outrageous assumptions about the nature of
gravity.
Still entirely irrelevant for the original point of discussion. Stop
obfuscating.
Earlier BBTs were quite plausible. But as the flaws in each successive
model are revealed, ever less plausible, ever more exotic models are put up,
inflation is but one of these.
If you did not notice: inflation already made some very specific
predictions, some of which have already been confirmed.
Additionally, none of the evidences I listed had anything to do with
inflation; they are all based on developments in the universe long
after the inflationary period. They would still support the BBT if it
could be shown that inflation theory is utterly wrong.
There is no viable model, that I am aware of, that does not include
inflation. Therefore, for the BB to have occurred, inflation theory must
also be correct.
That's like saying "evolution can't be true because we don't
understand abiogenesis yet". I.e. a complete non sequitur.
[snip]
Nice. Even if this were relevant (which it isn't), you still have not
shown that one needs *several* of these theories in order to make all
the predictions I listed, that one alone is not necessary.
That was your original claim, remember?
I think you meant "that one alone is not sufficient."
Yes, sorry.
Whenever a new bit of
evidence is about to be revealed, a new observation etc, the BBT fragments
into numerous competing versions that spread their predictions across the
entire range of plausible observations.
Absolute complete nonsense. Care to tell me what on earth you are
talking about?
Maybe this has happened in earlier decades, when the cosmological
parameters were still unsure. But in the last years, something like a
Standard Model of cosmology has emerged, with the parameters fixed to
a quite satisfying accuracy.
Take the ripples in the background
radiation. It seems that every man and his dog had a different formulation
that predicted different amplitudes of the ripples.
I have no clue what you are talking about. References, please.
BTW: this is *still* all irrelevant for your original claim. Stop
obfuscating!
As it turned out, they
were all wrong, the amplitude of the ripples was much smaller than expected.
Indeed, and now we know the reason: the presence of Dark Energy. It
all fits together rather nicely since this component of the universe
had been discovered.
When there is no new data about, the number of variations might reduce down
to one or two dominant versions and a few lesser variations. But if, for
instance, a gravitational wave detector was set into place or some new way
of observing the universe becomes available, there will be another
fragmentation as numerous scientists try to cash in on the paper publishing
bonanza ahead of the new observations, and like a lottery, some variation is
bound to be right and this is put up as further proof of the BBT.
Why not wait until this happens instead of making silly predictions?
And if
no-one gets it right, as with the ripples, BBT theorists will claim that
they have been vindicated anyway.
Nonsense.
In 'Wrinkles in Time: The Imprint of Creation' by George Smoot, he spoke of
'heroes of the BBT' (p.42), 'threats to the BBT' (p.17) and speaks of the
effort to save the BBT as an heroic effort (p.18). Very objective - clearly
there was only one result he was interested in.
If you did not notice: such language is also used in other parts of
science. After all, science is a human endavour like many others, and
people are often emotionally very involved in it.
He speaks about the search
for the ripples as if they must be found to save the theory.
Well, that's true, so where is the problem?
He is pragmatic enough to know that if they find something imaginary
(wishful
thinking) that they will be found out by subsequent scientific
investigation. So he is very careful to verify his findings ahead of
publication.
And Smoot is actually observing something real, the light that can be
measured. What hope do we have when this emotion is applied to purely
theoretical models
What are you talking about?
- are the theorists open to other ideas, other possible
models? Sure, 1% effort just to show that the alternatives are non-viable.
Plain nonsense.
In my opinion, rationality goes out the window when emotion is the guide for
scientific theory.
Fortunately, emotion is not the guide for the BBT.
It is tolerable where verifiable experiments or
observations can be performed and emotion, whether they wish to admit it or
not, has driven many a scientist to some pretty amazing discoveries. But
when pure theory is called upon, the theory toward which the passion is
directed is the one that will always appear to be more plausible,
What "pure theory" are you talking about?
even if we
have to make up additional never observed dark matter,
Dark Matter was *not* postulated because the BBT "needed" it. It had
been proposed already decades before, due to wholly different reasons.
And Dark Matter models *also* make *testable* predictions, some of
which have already been confirmed.
epicycles,
You really have no clue what "epicycles" actually are.
expanding space or dark energy to make the theory work.
Expanding space is predicted by General Relativity. Dark Energy is
essentially predicted by Quantum Field Theory.
Both make testable predictions, some of which already have been confirmed.
All these theories differ in some fundamental way or other from each
other.
This includes the anticipated expansion rate. The weight of theories,
as
far as I can tell, favour a continuing accelerating expansion because it
space that is expanding and there isn't enough matter in the universe to
slow it down.
Wow. Thanks for showing that you don't understand some of the most
basic things about the BBT. Hint: no matter how few matter there is,
the universe will *always* get slowed down. The acceleration can
*only* be explained by the presence of Dark Energy.
RKS:
Don't forget Dark Time. If all else fails you can always make up a theory
about that as well.
Using ridicule won't help you to cover up your major blunder above.
Actually, Andreas Albrecht and Joao Mangueijo put up a
theory to challenge inflation. In their theory, the speed of light can
change its rate in the early universe. This is reported in NewScientist,
24th of July, 1999.
Indeed. So what?
That's not far off dark time.
Says the one who has just above demonstrated that he has no clue of
the most basic aspects of the BBT...
[snip]
But your original claim was that there is not one of those 20 or more
theories which made all the predictions I listed. You *still* have not
supported that claim. (and all you have brought up so far was totally
irrelevant to all these predictions, see above)
You mentioned the background radiation.
Not in the list we are talking about. I'll repeat it here for convenience.
* Changing temperature of the CMBR. Confirmed.
* CMBR should be polarized. Confirmed.
* Time dilation in supernova brightness curves. Confirmed.
* Surface brightness of galaxies depends on (1+z)^(-4). Confirmed.
* Power spectrum of the CMBR should be scale-independent. Confirmed.
* Large-scale structure should have formed from the initial
fluctuations in the CMBR. Confirmed.
And now please *finally* support your original claim that there is not
one theory which predicts all of this, that several are needed, that
at least 20 models predicted parts of this. Or admit that you did not
know what you were talking about and were wrong.
That was predicted by the Gamow
model which is no longer used. Predicting something that has already
occurred and can not be repeated only shows consistency in a model, it
doesn't prove it.
Since *no* observation *ever* proves *any* scientific theory, but only
provides evidence for it, i.e. shows consistenty, where exactly do you
see the problem here?
Do you also claim that there is a problem with the theory of evolution
because the Cambrian explosion has already occured and we can't repeat it?
Which model correctly predicted the amplitude of the ripples in the
background radiation,
Irrelevant to the original list above.
the accelerating expansion of the universe and the
existence of dark energy?
Hint: these two belong together, the second implies the first.
And this is indeed described by Lambda CDM, the Standard Model of
cosmology.
And when was that theory formulated?
The main idea had been around for decades. The parameters were
determined beginning about in 1998, with the observation of the
acceleration by examining supernovae, and became more and more precise
with the years. 2003, the WMAP satellite made such precise
measurements that now the parameters of the model are quite well
established.
As for the main stream, I don't know what they are up to these days.
If you are that ignorant about what cosmologists actually say today,
you should stop attacking the BBT. Hint: Lambda CDM.
So that's your cosmic flavour.
Hint: that's the "flavour" of essentially all cosmologists today.
Easy enough to call in experts to pull it apart:-
"These are the simplest assumptions for a consistent, physical model of
cosmology. However, ?CDM is a model. Cosmologists anticipate that not all of
them will not be borne out exactly when more is known about the fundamental
physics. In particular, cosmic inflation predicts spatial curvature at the
level of one part in ten or one hundred thousand. It would also be
surprising if the temperature of dark matter were absolute zero. Moreover,
?CDM says nothing about the fundamental physical origin of dark matter, dark
energy and the nearly scale-invariant spectrum of primordial curvature
perturbations: in that sense, it is merely a useful parameterization of
ignorance."
http://en.wikipedia.org/wiki/Lambda-CDM_model
1) Why do you think that the above "pulls apart" the model?
2) Why do you think this was written by an "expert"?
It seems there are at least four 'popular' CDM models, "These are high
resolution simulations of cosmological volumes of dark matter carried out in
four different cosmologies: ?CDM and Lambda CDM, SCDM and OCDM" (The Nature
of Galaxy Bias and Clustering A. J. Benson, S. Cole, C. S. Frenk, C. M.
Baugh, and C. G. Lace 1999).
Look at the date. This was six years ago. In the meantime,
cosmologists have agreed on Lambda CDM.
Thanks for showing *yet again* that you have no clue what you are
talking about.
SNIa data have reached to high enough redshift to see the expected turnover
in Lambda models, enough to exclude grey dust (now we worry about
"replenishing grey dust"), and to infer w = -1.0 ± 0.1; see
arXiv:astro-ph/0402512
This is one of the predictions of Dark Energy I talked about; do you
see the nice confirmation?
RKS:
Why is the university physics course page referring to "Lambda ModelSSSS".
I thought you were advocating the "One Model Policy"??
There are some small variants out there, but *all* of them make *all*
the predictions in my list above, so your original claim that there is
not one single theory making all these predictions is *still* wrong.
Stop obfuscating.
I can't find any mention of how old this model/s is, but it looks to me like
an invention of the late 90s.
Early 1990s, I would say.
No doubt theorists, or their apologists, still
claim that the theory correctly predicted the CMBR, discovered more than 30
years earlier.
Hint: a prediction in science does not necessarily have to come before
the observation.
Thanks for showing that you don't understand science.
If we talk of the BBT/Lambda-CDM we are talking about a model just a few
years old, not a model that was cooked up by Gamow or anticipated by
Einstein.
We are talking about a model which was initially devised by Einstein
and over the decades more and more refined by the cosmologists.
The sad truth is that BBTs have been put up by scientists from a variety
of
fields, and who knows which ones will be taken seriously and
incorporated.
Nonsense. Apparently you confuse inflation theories with BBTs.
Lambda CDM includes inflation - are you trying to devest yourself of the
shakier parts of the model??
For the 10th time: inflation is not important for the predictions I
listed above, so why do you keep harping on this instead of finally
providing evidence for your original silly claim?
Quantum theory seemed to be quite remote from large scale structure, but
when we decided that the universe might have been about the size of a
pea and then much smaller still,
Oh my goodness. Thanks for showing yet again that you don't know some
of the most basic facts of the BBT.
Try this: <http://www.astro.ucla.edu/~wright/infpoint.html>
Interesting. None of the models I read about, mostly in '98, included an
infinite universe, so this concept must be quite recent.
Absolute utter nonsense. That the universe could be infinite has been
known almost right from the start of the theory, for decades.
Thanks for showing *yet again* that you have no clue what you are
talking about.
Infinite space was
included in some but not all models.
You just said that *none* of the models you read about included an
infinite universe. Care to make up your mind?
Some theorist hypothesised that space
was somehow created ahead of the expansion.
I have no clue what you are talking about.
Now I see what Andrei Linde
meant when he said that "In a way, the old steady state theory of Hoyle was
right."
I'd like to know just when the 'all the matter squished' changed to 'some of
the matter squished'.
Thanks for showing *yet again* that you have no clue what you are
talking about.
An infinite universe does *not* mean "some of the matter squished" only!!!
I'm aware that inflation theory of Guth had multiple
universes where the visible universe was just one small part, but in his
model ALL the universe (visible and otherwise) began together in one
confined place.
Reference, please.
Or is the story that Linde like to tell about a an atom in your nose could
potentially expand into another (visible) universe correct?
That's quite garbled version of what Linde actually says, and we don't
know yet if his ideas are true.
Bye,
Bjoern
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| User: "Robert Karl Stonjek" |
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| Title: Re: Article: EXPANSION OF UNIVERSE SOLE EXPLANATION OF RED SHIFT |
26 Jul 2005 08:49:49 PM |
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The book "Before the Big Bang: The Origins of the Universe" by Ernest J
Sternglass outlines the rehashed primeval atom. All the papers etc that
the
new theory relies on or has published are mentioned in the bibliography.
That book is not available in my university library. Could you provide
some of the references, please?
A search for "Sternglass" in the astro-ph section of the Arxiv gives
no results. A search there for "primeval atom" also gives no results.
So apparently Mr. Sternglass and his ideas are not very well-known in
astronomy...
A Google search reveals that he is a "professor of radiological
physics". Doesn't sound as if he is qualified to talk about cosmology...
And judging from the reviews the book got at Amazon, it contains a lot
of nonsense.
BTW, you have not given any evidence that any of these models
predicted any of the observations I originally lined out.
Pages 263-267 contain 'endnotes' which includes references. I didn't think
much of the book or his theory, but thought no less of it than other books
on the BBT and its variations. I'm not going to filter out the relevant
references as that would require re-reading sections of the book, which I'd
rather not do.
Earlier BBTs were quite plausible. But as the flaws in each successive
model are revealed, ever less plausible, ever more exotic models are put
up,
inflation is but one of these.
If you did not notice: inflation already made some very specific
predictions, some of which have already been confirmed.
Do you mean that Lambda CDM made these predictions, or did some other theory
make these predictions. Simply referring to 'inflation theory' is
insufficient as not all variations can possibly be right and it is quite
unethical for one variation to claim proof based on the correct prediction
of a different variation. Thus you must specify either the particular
version of inflation theory that made these confirmed predictions or one
must assume that all variations made the later confirmed prediction.
Additionally, none of the evidences I listed had anything to do with
inflation; they are all based on developments in the universe long
after the inflationary period. They would still support the BBT if it
could be shown that inflation theory is utterly wrong.
There is no viable model, that I am aware of, that does not include
inflation. Therefore, for the BB to have occurred, inflation theory
must
also be correct.
That's like saying "evolution can't be true because we don't
understand abiogenesis yet". I.e. a complete non sequitur.
On the contrary.
Natural selection can be shown to occur in bacteria and viruses in the lab.
Natural selection is a process that is occurring today just as much as it
occurred at any time in the past.
Inflation theory, as I understand it, assumes that there is an infinite
space and near infinite universe (depending on the variation of the theory).
The Big Bang Theory originally, as one of its founding tenants, postulated
that the universe is finite and had a beginning as opposed to the Steady
State Theory that said the universe is infinite and had no beginning.
Inflation theories make very wild claims about what the universe,
particularly our visible universe, must have been like at various times and
is supposed to explain some of the large scale structure of the universe
such as the distribution of matter and the ripples in the CMBR.
As it turned out, they
were all wrong, the amplitude of the ripples was much smaller than
expected.
Indeed, and now we know the reason: the presence of Dark Energy. It
all fits together rather nicely since this component of the universe
had been discovered.
You mean it has been hypothesised. Now I know what it must have been like
in the early days of astronomy when astronomers 'discovered' a new
epicycle'. Of course neither you nor I could argue against them unless we
could show that we had studied and understood every epicycle and the math
PROVING its validity.
The Earth centred universe never went out of fashion, it was merely confined
to explaining the orbit of the moon and other Earth satellites, just as the
sun centred universe was later restricted to explain only the paths of
planets, comets etc. Models are no longer, in most cases, seems as strictly
right or wrong but are used to explain or model some phenomena but not all.
It seems that the BBT theorists still have this 'all or nothing' attitude,
though the umbrella of BBT seems to incorporate ever more models, such as
parts of the old steady state. Even you seem to be more comfortable with a
two stage formulation with the very early universe modelled separately to
the later universe so that one is not dependant on the other being
absolutely correct and complete.
He speaks about the search
for the ripples as if they must be found to save the theory.
Well, that's true, so where is the problem?
But you claim that the BBT has a number of confirmed predictions under its
belt - why would it need saving??
even if we
have to make up additional never observed dark matter,
Dark Matter was *not* postulated because the BBT "needed" it. It had
been proposed already decades before, due to wholly different reasons.
And Dark Matter models *also* make *testable* predictions, some of
which have already been confirmed.
Of course there is regular dark matter - dead stars, gas clouds and other
space debris. But that only makes up a small portion of this 90% dark
matter (depending on theory, I think I read that your favoured version
predicts about 90%).
epicycles,
You really have no clue what "epicycles" actually are.
They are 'circles within circles' when plotting the path of an orbiting
object. Thus an object, say, seen moving across the sky and then changing
directions and moving back again then reversing its direction again before
proceeding it can be explained by plotting a 'loop' in its circular orbit -
an epicycle. There were ever more epicycles introduced into the Earth
centred universe model to explain the path of planets. But if one plots
planets around the sun you can get a good approximation with circular
orbits, even closer with simple ellipses.
Actually, Andreas Albrecht and Joao Mangueijo put up a
theory to challenge inflation. In their theory, the speed of light can
change its rate in the early universe. This is reported in
NewScientist,
24th of July, 1999.
Indeed. So what?
Why would two scientists of their calibre think that there was any need for
a new theory?
Easy enough to call in experts to pull it apart:-
"These are the simplest assumptions for a consistent, physical model of
cosmology. However, ?CDM is a model. Cosmologists anticipate that not
all of
them will not be borne out exactly when more is known about the
fundamental
physics. In particular, cosmic inflation predicts spatial curvature at
the
level of one part in ten or one hundred thousand. It would also be
surprising if the temperature of dark matter were absolute zero.
Moreover,
?CDM says nothing about the fundamental physical origin of dark matter,
dark
energy and the nearly scale-invariant spectrum of primordial curvature
perturbations: in that sense, it is merely a useful parameterization of
ignorance."
http://en.wikipedia.org/wiki/Lambda-CDM_model
1) Why do you think that the above "pulls apart" the model?
2) Why do you think this was written by an "expert"?
and you are an expert?
No doubt theorists, or their apologists, still
claim that the theory correctly predicted the CMBR, discovered more than
30
years earlier.
Hint: a prediction in science does not necessarily have to come before
the observation.
You can prove the consistency and validity of a theory by showing that it
models known outcomes, but to prove a theory generally it must predict
something that has not been observed. A good example of this would be the
prediction of the age of galaxy clusters at extreme distance (at the limits
of Hubble's deep space probes). Cosmologists predicted that new structures
would be found, but old structures were actually discovered, though too few
have been observed to discount the hypothesis regarding new structures (as,
to my knowledge, all that was predicted was the average or typical age
range).
If we talk of the BBT/Lambda-CDM we are talking about a model just a few
years old, not a model that was cooked up by Gamow or anticipated by
Einstein.
We are talking about a model which was initially devised by Einstein
and over the decades more and more refined by the cosmologists.
Rubbish. Einstein did not propose any model currently used by cosmologists.
He only considered the Milky Way, as this was once thought to be the entire
universe. And he was wrong about the Milky way - the Milky way does not
have to either expand or contract, it rotates.
Einstein's 'model' considered matter moving through space, which is nothing
like the expanding space model.
I think this attribution of the earlier roots to new models is simply
wishful thinking. Sure, there is always something brought forward, but the
just what if Einstein's model that he didn't himself reject still exists.
Lambda CDM includes inflation - are you trying to devest yourself of the
shakier parts of the model??
For the 10th time: inflation is not important for the predictions I
listed above, so why do you keep harping on this instead of finally
providing evidence for your original silly claim?
My original claim was:
Comment:
Predictions made by the Big Bang model have been consistently wrong, either
wholly or by orders of magnitude eg:
The magnitude of the ripples in CMBR (predictions were not even close);
The rate of the deceleration of the expansion of the universe (it is
accelerating);
Prediction of average age of galaxies at the greatest distances viewable by
Hubble (around 10 billion light years - the two furthest galaxies have both
been found to be old galaxies, not young forming galaxies as predicted); the
complete list is far too long to catalogue here.
My subsequent claim was that no model is complete - you gave a list of
predictions made by the Lambda CDM model, but there are other predictions
that were made, including what the very early universe was like and that
inflation occurred - I include not just the limited list you gave, but the
complete list of predictions ever made by models under the BBT banner.
Inflation is part of the Lambda CDM model. If you were to tell me that
there were two models, one of the early universe and one of the universe
after a certain age, then you would have a case. But the same model covers
both eras, so you can't excise the bits you don't like and still claim
advocacy of this model.
Interesting. None of the models I read about, mostly in '98, included
an
infinite universe, so this concept must be quite recent.
Absolute utter nonsense. That the universe could be infinite has been
known almost right from the start of the theory, for decades.
Thanks for showing *yet again* that you have no clue what you are
talking about.
Infinite universe was not always the accepted norm in cosmology. Of course
there were theories that said the universe is infinite - the steady state
theory. Olber's paradox was put up as proof that this could not be so.
Anyway, pre-inflation cosmology had the entire universe compacted in a small
space. I'm sure I've read of some versions that have a pre-existing
infinite space, and some that don't (that space expands into nothingness, or
expands only between particles). And some were advocating an infinite yet
bound universe.
Of course you ignore all the older models that are not consistent with
Lambda CDM and pick out only those ideas consistent with the current
formulation, so creating the illusion of a long lineage.
George Smoot, in 'Wrinkles in Time', describes the following: "Remember, the
universe did not expand into existing space after the big bang; its
expansion created space and time as it went" (p.283 of the paperback.) He
also speaks of the universe "generating space and putting it between
galaxies." P.177
Infinite space was
included in some but not all models.
You just said that *none* of the models you read about included an
infinite universe. Care to make up your mind?
Infinite space as opposed to infinite matter filled space.
Or is the story that Linde like to tell about a an atom in your nose
could
potentially expand into another (visible) universe correct?
That's quite garbled version of what Linde actually says, and we don't
know yet if his ideas are true.
But they are no less credible than inflation, right?
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| User: "Bjoern Feuerbacher" |
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| Title: Re: Article: EXPANSION OF UNIVERSE SOLE EXPLANATION OF RED SHIFT |
27 Jul 2005 05:21:18 AM |
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Robert Karl Stonjek wrote:
I notice that you snipped my list of succesful predictions. I wonder
why........
The book "Before the Big Bang: The Origins of the Universe" by Ernest J
Sternglass outlines the rehashed primeval atom. All the papers etc that
the
new theory relies on or has published are mentioned in the bibliography.
That book is not available in my university library. Could you provide
some of the references, please?
A search for "Sternglass" in the astro-ph section of the Arxiv gives
no results. A search there for "primeval atom" also gives no results.
So apparently Mr. Sternglass and his ideas are not very well-known in
astronomy...
A Google search reveals that he is a "professor of radiological
physics". Doesn't sound as if he is qualified to talk about cosmology...
And judging from the reviews the book got at Amazon, it contains a lot
of nonsense.
BTW, you have not given any evidence that any of these models
predicted any of the observations I originally lined out.
Pages 263-267 contain 'endnotes' which includes references.
I said the book is not available in my university library, so how does
that help me?
I didn't think
much of the book or his theory, but thought no less of it than other books
on the BBT and its variations.
May I ask you what qualifications you have for judging the validity of
a scientific theory?
I'm not going to filter out the relevant
references as that would require re-reading sections of the book, which I'd
rather not do.
Well, you said that his theory has been re-hashed recently. So why don't
you simply give me some of the most recent references? That would only
require a quick scan through the few pages of endnotes.
Earlier BBTs were quite plausible. But as the flaws in each successive
model are revealed, ever less plausible, ever more exotic models are put
up, inflation is but one of these.
If you did not notice: inflation already made some very specific
predictions, some of which have already been confirmed.
Do you mean that Lambda CDM made these predictions, or did some other theory
make these predictions.
I said specifically "inflation".
Lambda CDM is mainly about the development of the universe *long
after* inflation (as is the whole BBT, essentially). Inflation
addresses the very earliest times in the development of the universe
only.
Simply referring to 'inflation theory' is
insufficient as not all variations can possibly be right and it is quite
unethical for one variation to claim proof based on the correct prediction
of a different variation.
Fortunately, no one did do that.
Thus you must specify either the particular
version of inflation theory that made these confirmed predictions or one
must assume that all variations made the later confirmed prediction.
Try looking here:
<http://lambda.gsfc.nasa.gov/product/map/pub_papers/firstyear/inflation/wmap_inflation.pdf>
Additionally, none of the evidences I listed had anything to do with
inflation; they are all based on developments in the universe long
after the inflationary period. They would still support the BBT if it
could be shown that inflation theory is utterly wrong.
There is no viable model, that I am aware of, that does not include
inflation. Therefore, for the BB to have occurred, inflation theory
must also be correct.
That's like saying "evolution can't be true because we don't
understand abiogenesis yet". I.e. a complete non sequitur.
On the contrary.
In no way.
Natural selection can be shown to occur in bacteria and viruses in the lab.
Natural selection is a process that is occurring today just as much as it
occurred at any time in the past.
Indeed. Hint: expansion of the universe can also be shown to occur and
to have occured.
Inflation theory, as I understand it, assumes that there is an infinite
space and near infinite universe (depending on the variation of the theory).
The Big Bang Theory originally, as one of its founding tenants, postulated
that the universe is finite
Support that assertion, please. That *really* would be news to me.
and had a beginning as opposed to the Steady
State Theory that said the universe is infinite and had no beginning.
Inflation theories make very wild claims about what the universe,
particularly our visible universe, must have been like at various times
Inflation theories are *specifically* only about the *very earliest
time* of the universe, not about "various times".
and
is supposed to explain some of the large scale structure of the universe
such as the distribution of matter and the ripples in the CMBR.
Very vaguely right.
As it turned out, they
were all wrong, the amplitude of the ripples was much smaller than
expected.
Indeed, and now we know the reason: the presence of Dark Energy. It
all fits together rather nicely since this component of the universe
had been discovered.
You mean it has been hypothesised.
*sigh* That dark energy may exist had been "hypothesised" already
decades ago. What we now have is *evidence* that it indeed exists -
because several, quite different lines of observation all are in nice
agreement with predictions of the Lambda CDM model.
Now I know what it must have been like
in the early days of astronomy when astronomers 'discovered' a new
epicycle'. Of course neither you nor I could argue against them unless we
could show that we had studied and understood every epicycle and the math
PROVING its validity.
You really have not the *faintest* clue of what constitutes an "epicycle".
Hint: epicycles are invented specifically to explain *one* phenomenon,
they can't be used to make predictions about further phenomena (or if
they do that, the predictions turn out to be wrong). That is not at
all like what has happened with Dark Energy!
[snip more nonsense]
He speaks about the search
for the ripples as if they must be found to save the theory.
Well, that's true, so where is the problem?
But you claim that the BBT has a number of confirmed predictions under its
belt - why would it need saving??
Say, do you have no clue of science at all?????????
*No* theory is *ever* conclusively "proven". The only thing we can do
is gather evidence supporting it. As soon as evidence emerges which
seems to contradict a theory, the theory is in serious trouble, no
matter how much supporting evidence there has been accumulated
previously. So it is quite clear what was meant when he said that
this *has* to be found in order to "save" the theory!
even if we
have to make up additional never observed dark matter,
Dark Matter was *not* postulated because the BBT "needed" it. It had
been proposed already decades before, due to wholly different reasons.
And Dark Matter models *also* make *testable* predictions, some of
which have already been confirmed.
Of course there is regular dark matter - dead stars, gas clouds and other
space debris. But that only makes up a small portion of this 90% dark
matter (depending on theory, I think I read that your favoured version
predicts about 90%).
Indeed, but what has that to do with the argument above?
I'm not sure here what exactly you mean with the "90%" here? That 90%
of all matter is dark? That Dark Matter makes up 90% of the universe?
[snip more nonsense]
Actually, Andreas Albrecht and Joao Mangueijo put up a
theory to challenge inflation. In their theory, the speed of light can
change its rate in the early universe. This is reported in
NewScientist, 24th of July, 1999.
Indeed. So what?
Why would two scientists of their calibre think that there was any need for
a new theory?
*gaping mouth*
Yes, you indeed have not the *faintest* clue of science!
Scientist *all the time* try to invent new theories. No scientist
would ever believe that the current theories are The Truth (tm).
No matter how well supported a theory is, there will always be people
who try to figure out alternatives.
Easy enough to call in experts to pull it apart:-
"These are the simplest assumptions for a consistent, physical model of
cosmology. However, ?CDM is a model. Cosmologists anticipate that not
all of
them will not be borne out exactly when more is known about the
fundamental
physics. In particular, cosmic inflation predicts spatial curvature at
the
level of one part in ten or one hundred thousand. It would also be
surprising if the temperature of dark matter were absolute zero.
Moreover,
?CDM says nothing about the fundamental physical origin of dark matter,
dark
energy and the nearly scale-invariant spectrum of primordial curvature
perturbations: in that sense, it is merely a useful parameterization of
ignorance."
http://en.wikipedia.org/wiki/Lambda-CDM_model
1) Why do you think that the above "pulls apart" the model?
I notice you did not answer that.
2) Why do you think this was written by an "expert"?
I notice you did not answer that.
and you are an expert?
I'm not working specifically on this area of physics, but I have
regular contact with cosmologists (e.g. Ned Wright and Ryan Scranton),
I learned lots on cosmology during my physics studies, read several
books (you know, real textbooks, not these pop science books you seem
to prefer), and even part of my master exams were on cosmology.
So, what are *your* qualifications?
No doubt theorists, or their apologists, still
claim that the theory correctly predicted the CMBR, discovered more that
30 years earlier.
Hint: a prediction in science does not necessarily have to come before
the observation.
You can prove the consistency and validity of a theory by showing that it
models known outcomes, but to prove a theory generally it must predict
something that has not been observed.
This requirement is nonsense.
For starters, theories are never "proved". Thanks for showing yet
again that you have no clue of science.
But nevertheless, the BBT *has* made predictions about things which
not yet had been observed. Take e.g. the abundance of light elements.
Or most of the things in my list, which you conveniently snipped.
A good example of this would be the
prediction of the age of galaxy clusters at extreme distance (at the limits
of Hubble's deep space probes). Cosmologists predicted that new structures
would be found, but old structures were actually discovered, though too few
have been observed to discount the hypothesis regarding new structures (as,
to my knowledge, all that was predicted was the average or typical age
range).
And although I told you that *repeatedly*, you *still* ignore that this
predictions was *not* based simply on the BBT, but also to a very
large part on our ideas on structure formation. Which mainly come from
computer simulations, for which even the people doing them freely
admit in the literature that they are still inadequate for realistic
modelling of many aspects.
Additionally, although I told you that *repeatedly*, you *still*
ignore that these galaxies with "old" structures contain only *young*
stars, with ages very nicely consistent with the age of the universe
obtained in other ways.
If we talk of the BBT/Lambda-CDM we are talking about a model just a few
years old, not a model that was cooked up by Gamow or anticipated by
Einstein.
We are talking about a model which was initially devised by Einstein
and over the decades more and more refined by the cosmologists.
Rubbish.
No, perfectly right.
Einstein did not propose any model currently used by cosmologists.
Utter nonsense. The basis for the current Lambda CDM model is
precisely Einstein's work.
He only considered the Milky Way, as this was once thought to be the entire
universe.
That is utterly irrelevant, since this assumption does not appear
anywhere in the actual equations developed by him, which describe the
actual model.
Thanks for showing that you also don't know what a model actually is.
And he was wrong about the Milky way - the Milky way does not
have to either expand or contract, it rotates.
Utterly irrelevant.
Einstein's 'model' considered matter moving through space,
Where did you get that nonsense from? Reference, please.
which is nothing like the expanding space model.
Which is exactly what Einstein considered.
[snip more nonsense]
Lambda CDM includes inflation - are you trying to devest yourself of the
shakier parts of the model??
For the 10th time: inflation is not important for the predictions I
listed above, so why do you keep harping on this instead of finally
providing evidence for your original silly claim?
My original claim was:
I addressed all that, and you still have not answered my relevant post
in the original thread. But this is not the "original claim" I am
talking about, see below.
Comment:
Predictions made by the Big Bang model have been consistently wrong, either
wholly or by orders of magnitude eg:
The magnitude of the ripples in CMBR (predictions were not even close);
The rate of the deceleration of the expansion of the universe (it is
accelerating);
Prediction of average age of galaxies at the greatest distances viewable by
Hubble (around 10 billion light years - the two furthest galaxies have both
been found to be old galaxies, not young forming galaxies as predicted); the
complete list is far too long to catalogue here.
My subsequent claim was that no model is complete - you gave a list of
predictions made by the Lambda CDM model, but there are other predictions
that were made, including what the very early universe was like and that
inflation occurred - I include not just the limited list you gave, but the
complete list of predictions ever made by models under the BBT banner.
Inflation is part of the Lambda CDM model. If you were to tell me that
there were two models, one of the early universe and one of the universe
after a certain age, then you would have a case. But the same model covers
both eras, so you can't excise the bits you don't like and still claim
advocacy of this model.
Say, are you deliberately obtuse here, or do you have memory problems?
The "original claim" which I am talking about, which started this
thread (hey, look simply at the first post in this thread!) was your
ridiculous claim that the predictions in my list (you know, the one
you snipped conveniently) do not come from one single theory, that
several (20 or more) have to be used to make these predictions.
You *still* have not supported that claim, although I asked you now
about 10 times to do that!
Do you have severe memory problems, or are you just not man enough to
admit that you were wrong? In the light of the fact that you keep
avoiding my direct requests and have conveniently snipped my list,
I strongly suspect the second.
Interesting. None of the models I read about, mostly in '98, included
an infinite universe, so this concept must be quite recent.
Absolute utter nonsense. That the universe could be infinite has been
known almost right from the start of the theory, for decades.
Thanks for showing *yet again* that you have no clue what you are
talking about.
Infinite universe was not always the accepted norm in cosmology.
It was not always the "accepted norm", right - but the possibility has
been there right from the start, contrary to your assertion above.
Yes, you are really not man enough to admit that you have been wrong.
Of course
there were theories that said the universe is infinite - the steady state
theory.
And the BBT.
Olber's paradox was put up as proof that this could not be so.
Utter nonsense. Olber's paradox is no problem for a BB version of an
infinite universe.
Anyway, pre-inflation cosmology had the entire universe compacted in a small
space.
Wrong. It is often portrayed like that in popular science accounts,
but this is simply not what the theory actually says or said.
I'm sure I've read of some versions that have a pre-existing
infinite space, and some that don't (that space expands into nothingness,
No version of the BBT did *ever* say something that stupid.
or
expands only between particles). And some were advocating an infinite yet
bound universe.
So why did you say above "None of the models I read about, mostly in
'98, included an infinite universe..." ?
Of course you ignore all the older models that are not consistent with
Lambda CDM and pick out only those ideas consistent with the current
formulation,
Err, obviously. Why should I use outdated models???
so creating the illusion of a long lineage.
Huh??? Sorry, I have no clue what your problem here is.
George Smoot, in 'Wrinkles in Time', describes the following: "Remember, the
universe did not expand into existing space after the big bang; its
expansion created space and time as it went" (p.283 of the paperback.) He
also speaks of the universe "generating space and putting it between
galaxies." P.177
Indeed. Your point?
Infinite space was
included in some but not all models.
You just said that *none* of the models you read about included an
infinite universe. Care to make up your mind?
Infinite space as opposed to infinite matter filled space.
So you want to say that before 1998, there were models which proposed
an infinite space which is not filled with matter??? Say, where did
you get *that* nonsense from again?
Or is the story that Linde like to tell about a an atom in your nose
could
potentially expand into another (visible) universe correct?
That's quite garbled version of what Linde actually says, and we don't
know yet if his ideas are true.
But they are no less credible than inflation, right?
This *is* a version of inflation!!! Thanks for showing *yet again*
that you have not the faintest clue you are talking about!!!
Bye,
Bjoern
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| User: "Robert Karl Stonjek" |
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| Title: Re: Article: EXPANSION OF UNIVERSE SOLE EXPLANATION OF RED SHIFT |
29 Jul 2005 01:59:44 AM |
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Let's just concentrate on some of your more outrageous claims.
You have claimed several times that SPACE expands (not just space-time).
What does QM have to say about this, after all, 'space' has expanded quite a
bit by now.
1) Does the density of matter is space thin with the expansion of space?
2) Does the frequency of occurrence of virtual particles fall?
3) Does the distance between atoms increase?
4) Does the distance between the electron cloud and, say, the single
proton nucleus in a hydrogen atom increase?
5) Considering a positron-electron virtual pair that absorb a photon,
coming into being briefly and then emit an electron:
a) does the average length of the paths of the objects increase/decrease
as space expands?
b) does the average length of time that these virtual pairs exist
increase?
c) does the energy of the light emitted and absorbed change with
expansion?
You have claimed that space can expand, but space is not empty - what
physical changes occur to space when it expands - isn't this a measurable
property of space? Can't we measure the current properties of local space
and compare these properties to the same when measured at a later time?
--
Kind Regards
Robert Karl Stonjek
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| User: "Bjoern Feuerbacher" |
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| Title: Re: Article: EXPANSION OF UNIVERSE SOLE EXPLANATION OF RED SHIFT |
29 Jul 2005 03:52:54 AM |
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Robert Karl Stonjek wrote:
Let's just concentrate on some of your more outrageous claims.
I notice that you still ignore the original reason of this thread:
that you did not support your ridiculous claim that my list of
predictions can not be explained by one single model.
OTOH, what *you* call "outrageous claims" are facts which have been
accepted by hundreds of thousands of scientists for several decades now.
BTW, I notice also that you haven't told me what your qualifications
for judging the validity of a scientific theory are. I wonder why...
You have claimed several times that SPACE expands (not just space-time).
What on earth would it even *mean* to say that "time expands"???
BTW: open a text book on cosmology (or GR). Look at the
Robertson-Walker metric. Then you will see for yourself that it is
"only" space that expands.
What does QM have to say about this, after all, 'space' has expanded quite a
bit by now.
QM is largely irrelevant for this.
1) Does the density of matter is space thin with the expansion of space?
I suppose the "is" should read "in". If yes, then yes, the density
decreases. Thanks for showing yet again that you don't know some of
the most basic things about the theory.
2) Does the frequency of occurrence of virtual particles fall?
No. I don't even think such a frequency could be *defined* in any
meaningful way.
3) Does the distance between atoms increase?
In the mean (i.e. if you take the average over all pairs of atoms),
yes. How else could the density go down?
4) Does the distance between the electron cloud and, say, the single
proton nucleus in a hydrogen atom increase?
No. BTW, this "electron cloud" is merely a nice visualization, it is
not what QM actually says.
5) Considering a positron-electron virtual pair that absorb a photon,
coming into being briefly
Huh? Do you want to say that the photon is absorbed by the pair
*before* it even exists?
and then emit an electron:
Huh?????
a) does the average length of the paths of the objects increase/decrease
as space expands?
No.
b) does the average length of time that these virtual pairs exist
increase?
No.
c) does the energy of the light emitted and absorbed change with
expansion?
No.
You have claimed that space can expand, but space is not empty - what
physical changes occur to space when it expands
What exactly do you mean with "physical changes"?
- isn't this a measurable property of space?
Is *what* a measurable property of space?
Can't we measure the current properties of local space
and compare these properties to the same when measured at a later time?
What exactly do you mean with "properties of space"?
Bye,
Bjoern
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| User: "Robert Karl Stonjek" |
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| Title: Re: Article: EXPANSION OF UNIVERSE SOLE EXPLANATION OF RED SHIFT |
30 Jul 2005 07:54:25 PM |
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I notice that you still ignore the original reason of this thread:
that you did not support your ridiculous claim that my list of
predictions can not be explained by one single model.
OTOH, what *you* call "outrageous claims" are facts which have been
accepted by hundreds of thousands of scientists for several decades now.
BTW, I notice also that you haven't told me what your qualifications
for judging the validity of a scientific theory are. I wonder why...
You have claimed several times that SPACE expands (not just space-time).
What on earth would it even *mean* to say that "time expands"???
BTW: open a text book on cosmology (or GR). Look at the
Robertson-Walker metric. Then you will see for yourself that it is
"only" space that expands.
Time dilation is not unheard of. Time (the frequency of events, such as the
ticking of a clock), as a property of space, definitely is not uniform.
Indeed, there is no preferred frame that can act as a reference for the
measurement of time (some have suggested that an observer that is stationary
relative to the CMBR (no dipole) could be such a reference.) Time is a
relative property of some inertial frame.
Compare two identical clocks, one on Earth at sea level (clock A) and one at
some distance above sea level (clock B). The clock at sea level will run
slower than the clock at some altitude above sea level or more correctly,
for some interval measured by clock A, the same interval measured by clock B
will be greater. (proven in experiments by Pound and Rebka, "Apparent Weight
of Photons" 1960, and Pound and Smider, "Effects of Gravity on Gamma
Radiation" 1965)
There is no reason at all why time can't dilate in space such that two
clocks A and B placed in identical space, but where space-time expands only
in the region of clock B, that the frequency (clock rate) of A relative to B
will increase ie that the clock in expanding space-time will slow relative
to the clock in non-expanding space-time.
The exact mechanism by which clocks slow on a moving object relative to a
stationary clock is not known, except that the change in clock rate is
relative ie for two clocks passing in the night, neither clock observer
(travelling with the clocks) can claim to be stationary or moving except
relative to the other clock (both can independently claim to be stationary).
Clock rate/frequency does not change in one's own inertial frame.
Clock rate in a particular region of space relative to some other region of
space is a property of space. Indeed, if space expands, then the clock
carried along in that space should dilate relative to a stationary clock
(that is in identical but non-expanding space).
Any calculation you care to do on the nature of expanding space-time works
just as well regardless of whether it is space, time, or a combination of
both that is actually expanding/dilating.
Let's say a pulse is emitted from a clock in expanding space time (the clock
appears to be moving away from us). If space is expanding, then the
frequency of clock pulses will slow as each successive pulse has further to
travel. If time is dilating, then the frequency of clock pulses will slow
as each successive pulse is separated by a longer interval as measured by
the observer in non-expanding space.
The only consequence for the difference between expanding space and dilating
time is that if you extrapolate backward in time, the universe is not hotter
and denser in the past for a dilating time model.
Consider travel across expanding space-time, light passing across expanding
space-time, and anything else you would care to calculate - it makes no
difference whether you consider space is expanding or time is dilating. Oh,
there *is* one small difference - a relative (only) change in clock
frequency has no impact on a quantum mechanical account of space, but
expanding space does. Only dilating time is fully compatible with QM.
And you ask - what on earth would it even *mean* | | | | | | | | | | |