Chatroom
 

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Bad Astronomy and Universe Today Forum > The Proving Grounds > Against the Mainstream
Register FAQ Members List Calendar Mark Forums Read

   

View Poll Results: Should nucleosynthesis be dropped as a "pillar of the BB?"
Drop nucleosynthesis as a pillar of the BB 2 40.00%
Nucleosynthesis explaining 0.1% of the mass of the universe explains how it was created 3 60.00%
Voters: 5. You may not vote on this poll

Closed Thread
 
LinkBack Thread Tools Display Modes
  #31 (permalink)  
Old 09-May-2005, 10:44 AM
lyndonashmore lyndonashmore is offline
Banned
 
Join Date: Apr 2004
Location: Gulf
Posts: 1,275
Default Re: Is nucleosynthesis still a pilar of the Bb?

Quote:
Originally Posted by papageno
Quote:
Originally Posted by lyndonashmore
It is totally amazing to see just how little you lot are satisfied with.
You seem to hold high standards of evidence for the BB theory.
Why don't you hold the same standards for your own "theory"?
(Which is nowhere near as self-consistent and accurate as modern "mainstream" cosmology.)
In the BB the Hubble constant is a 'free parameter', My theory calculates it. say no more.
Cheers,
Lyndon
PS. How did you vote for the 'pillar of the universe?'
  #32 (permalink)  
Old 09-May-2005, 10:57 AM
papageno's Avatar
papageno papageno is offline
Order of Kilopi
 
Join Date: Feb 2004
Location: Greater London
Posts: 3,390
Default Re: Is nucleosynthesis still a pilar of the Bb?

Quote:
Originally Posted by lyndonashmore
Quote:
Originally Posted by papageno
Quote:
Originally Posted by lyndonashmore
It is totally amazing to see just how little you lot are satisfied with.
You seem to hold high standards of evidence for the BB theory.
Why don't you hold the same standards for your own "theory"?
(Which is nowhere near as self-consistent and accurate as modern "mainstream" cosmology.)
In the BB the Hubble constant is a 'free parameter', My theory calculates it. say no more.
You forgot to mention that you never provided a CMB spectrum calculated using your "theory".
And, as others have pointed out elsewhere, your "theory" does not even address the question of nucleosynthesis.
Despite your claims, your "theory" is not based any physics supported by experimental results or self-conistent theoretical speculation.
Since all this has been addressed in other threads, I don't want to hijack this thread.
__________________
papageno


"Why waste time learning, when ignorance is instantaneous?" - Hobbes (Calvin and Hobbes)

"It's all about context!" - Vince Noir (The Mighty Boosh)

"I've never heard of such a brutal and shocking injustice that I cared so little about!" - Zapp Brannigan (Futurama)

"...because the logic of the lines traced from reality is as poor of aesthetic value as it is strict in consistency. " - Paolo Bozzi (Naive Physics - free translation)
  #33 (permalink)  
Old 09-May-2005, 11:06 AM
lyndonashmore lyndonashmore is offline
Banned
 
Join Date: Apr 2004
Location: Gulf
Posts: 1,275
Default Re: Is nucleosynthesis still a pilar of the Bb?

papageno wrote
Quote:
Since all this has been addressed in other threads, I don't want to hijack this thread.
Yeh, there are some interesting points being made by everyone here, lets not stop the flow.
Cheers Lyndon.
PS. How did you vote on the Pillar question?
  #34 (permalink)  
Old 09-May-2005, 04:33 PM
akirabakabaka akirabakabaka is offline
Established Member
 
Join Date: Apr 2005
Posts: 510
Default

Quote:
Originally Posted by Sylas
Quote:
Originally Posted by akirabakabaka
Ashmore's 'coincidental' relation of Hubble's constant to the electron is accurate to an incredibly higher degree than BBN. So why the discrimination?
Because the value of hr/m is actually six orders of magnitude different from the Hubble constant.
I see this a lot in the Ashmore's Paradox thread. Are you trying to claim that because the magnitudes of 64km/s/Mpc and 0.6m^-3 are different there is no relation? Well of course there isn't... you need to convert to similar units first! lyndonashmore does this repeatedly on his website and in that thread, showing that when converted to SI units the values are almost identical (~2.1x10-18 s-1). Also, the correct relation is H = 2nhr/m. So, convert H to m^-3 or n to km/s/Mpc, it doesn't matter, the values will be the same when a proper relation is made with similar units.

Quote:
Originally Posted by Sylas
Lyndon does present another equation which has correct units: 2nhr/m, where n is an electron density.

However, a good value for n is not known, and so Lyndon merely tuned this parameter to get a match.
I believe that n has been determined observationally to a much higher degree of accuracy than the ratios of isotopes used to describe BB nucleosynthesis, but could be wrong.. (just looking at error bars here). Tired-light also assumes that all of the matter involved is real, not taking imaginary Dark Matter into account (which brings an uncertainty of 100% along with it). Estimates of real matter on the other hand give values for n from 0.1 to 10 m^-3, and n=0.6 would provide the conditions equivalent of H=64km/s/Mpc as shown repeatedly by lyndonashmore, so he is in close agreement with observation.

Quote:
Originally Posted by Sylas
The unfortunate thing is that you've actually got a reasonable point buried in the nonsense and non-sequiturs. The standard model of nucleosynthesis is not actually an ideal fit to the measurements. The errors are significant, and indicate something is not right; either in the measurements or in the model.
I can't believe someone finally admitted this on this forum =D> Are you taking 'perfectly consistent' notes, Cougar?

Quote:
Originally Posted by papageno
Quote:
Originally Posted by lyndonashmore
It is totally amazing to see just how little you lot are satisfied with.
You seem to hold high standards of evidence for the BB theory.
Why don't you hold the same standards for your own "theory"?
(Which is nowhere near as self-consistent and accurate as modern "mainstream" cosmology.)
Requiring Dark Matter to patch observation to fit "mainstream" theory is not exactly self-consistent, as it requires a completely unknowable parameter to justfy itself. This is no better than Einstein conjuring up the cosmological constant to make the universe act as he wanted. If observation fit GR without Dark Matter, then it would be self-consistent, but this is not the case.

Also, Dark Matter is required for BB theories to work, but Dark Matter is never taken into account to describe the theory itself. To quote myself from my poorly named SRT vs. LET thread:
Quote:
Originally Posted by akirabakabaka
1) Nucelosynthesis is wholly unrelated to Dark Matter, as its assumptions and predictions can only be applied to matter we can currently observe.

2) the Big Bang is wholly unrelated to Dark Matter, as our entirety of knowledge that we have applied in order to propose the BB was based in non-Dark matter observations and predictions. (Dark Matter was thrown in afterwards as necessary to explain current observations, but room was not made for it in the BB)

3) As lyndonashmore pointed out concerning the contentious ratio of Dark Matter to matter we can actually observe, no matter what the ratio is the majority is the unexplainable Dark Matter, and thus, the majority of our observations are unexplainable under BB models.
So 'consistency' and 'accuracy' are matters of faith under BB.

And so nobody is left out,
Quote:
Originally Posted by lyndonashmore
In the BB the Hubble constant is a 'free parameter', My theory calculates it. say no more.
Again, Ashmore's value n (number of electrons) is constrained by observation, just as Hubble's constant H has been reduced to 72+-8km/s/Mpc by observation (where such strange units come from assuming the redshift=velocity interpretation, a wonderful bias built into the units). So neither BB nor Ashmore are relying on a 'free parameter', they are both constrained by observation.
__________________
there is no governor anywhere
  #35 (permalink)  
Old 09-May-2005, 05:02 PM
papageno's Avatar
papageno papageno is offline
Order of Kilopi
 
Join Date: Feb 2004
Location: Greater London
Posts: 3,390
Default

Quote:
Originally Posted by akirabakabaka
Quote:
Originally Posted by Sylas
Quote:
Originally Posted by akirabakabaka
Ashmore's 'coincidental' relation of Hubble's constant to the electron is accurate to an incredibly higher degree than BBN. So why the discrimination?
Because the value of hr/m is actually six orders of magnitude different from the Hubble constant.
I see this a lot in the Ashmore's Paradox thread. Are you trying to claim that because the magnitudes of 64km/s/Mpc and 0.6m^-3 are different there is no relation? Well of course there isn't... you need to convert to similar units first!
Quote:
Originally Posted by Sylas
I'm using cgs units.
Ashmore's first "paradox" depends on using a particular set of units.
Which would be nonsense if the relation was not simply a numerical coincidence.
If it really expressed some physical relation, the units would balanced on both sides and equality would hold independently of the system of units.
Ashmore tried to fix this problem by introducing, completely ad hoc, the density of electrons in intergalactic space.
The units now balance properly, however there is no justification for using the electron density (except for an attempt to get the right numbers).

Quote:
Originally Posted by akirabakabaka
lyndonashmore does this repeatedly on his website and in that thread, showing that when converted to SI units the values are almost identical (~2.1x10-18 s-1). Also, the correct relation is H = 2nhr/m. So, convert H to m^-3 or n to km/s/Mpc, it doesn't matter, the values will be the same when a proper relation is made with similar units.
If Ashmore's "paradox" really was a sign of an underlying physical relationship, he would not need this ad hoc fix, with no physical justification.

Quote:
Originally Posted by akirabakabaka
Quote:
Originally Posted by Sylas
Lyndon does present another equation which has correct units: 2nhr/m, where n is an electron density.

However, a good value for n is not known, and so Lyndon merely tuned this parameter to get a match.
I believe that n has been determined observationally to a much higher degree of accuracy than the ratios of isotopes used to describe BB nucleosynthesis, but could be wrong.. (just looking at error bars here).
Using only the electrons, and only that particular value, is not justified by Ashmore.

Quote:
Originally Posted by akirabakabaka
Tired-light also assumes that all of the matter involved is real, not taking imaginary Dark Matter into account (which brings an uncertainty of 100% along with it). Estimates of real matter on the other hand give values for n from 0.1 to 10 m^-3, and n=0.6 would provide the conditions equivalent of H=64km/s/Mpc as shown repeatedly by lyndonashmore, so he is in close agreement with observation.
Unfortunately his "theory" is nowhere near being self-consistent and supported by experimental results, let alone well established physics (such as plasma physics).

Quote:
Originally Posted by akirabakabaka
Quote:
Originally Posted by Sylas
The unfortunate thing is that you've actually got a reasonable point buried in the nonsense and non-sequiturs. The standard model of nucleosynthesis is not actually an ideal fit to the measurements. The errors are significant, and indicate something is not right; either in the measurements or in the model.
I can't believe someone finally admitted this on this forum =D> Are you taking 'perfectly consistent' notes, Cougar?
"The errors are significant, and indicate something is not right; either in the measurements or in the model." does not necessarily mean that alternatives (such as Ashmore's "theory") are correct.
These alternatives need to do at least as good as the currently accepted theory and stand on their own ("I'm right because he is wrong!" does not work in science).

Quote:
Originally Posted by akirabakabaka
Quote:
Originally Posted by papageno
Quote:
Originally Posted by lyndonashmore
It is totally amazing to see just how little you lot are satisfied with.
You seem to hold high standards of evidence for the BB theory.
Why don't you hold the same standards for your own "theory"?
(Which is nowhere near as self-consistent and accurate as modern "mainstream" cosmology.)
Requiring Dark Matter to patch observation to fit "mainstream" theory is not exactly self-consistent, as it requires a completely unknowable parameter to justify itself. This is no better than Einstein conjuring up the cosmological constant to make the universe act as he wanted. If observation fit GR without Dark Matter, then it would be self-consistent, but this is not the case.

[SNIP!]
This was not my point.
Ashmore's "theory" is nowhere near as well supported as the BB Theory: it is inconsistent with well established physics, it deals with much narrower range of phenomenology, and is far from being as accurate.
Ashmore has not been able to provide any experimental results to support his ideas.
Whether modern cosmology needs an ad hoc dark matter is irrelevant to the validity of Ashmore's ideas.
If he used the same standards he uses for the BBT, he would have abandoned his "tired light theory" a long time ago.

Quote:
Originally Posted by akirabakabaka
Quote:
Originally Posted by lyndonashmore
In the BB the Hubble constant is a 'free parameter', My theory calculates it. say no more.
Again, Ashmore's value n (number of electrons) is constrained by observation, just as Hubble's constant H has been reduced to 72+-8km/s/Mpc by observation (where such strange units come from assuming the redshift=velocity interpretation, a wonderful bias built into the units). So neither BB nor Ashmore are relying on a 'free parameter', they are both constrained by observation.
Except that Ashmore's calculated Hubble constant has no physical justification, so it is basically worthless.
__________________
papageno


"Why waste time learning, when ignorance is instantaneous?" - Hobbes (Calvin and Hobbes)

"It's all about context!" - Vince Noir (The Mighty Boosh)

"I've never heard of such a brutal and shocking injustice that I cared so little about!" - Zapp Brannigan (Futurama)

"...because the logic of the lines traced from reality is as poor of aesthetic value as it is strict in consistency. " - Paolo Bozzi (Naive Physics - free translation)
  #36 (permalink)  
Old 09-May-2005, 05:05 PM
Celestial Mechanic's Avatar
Celestial Mechanic Celestial Mechanic is offline
Order of Kilopi
 
Join Date: Jun 2002
Location: Milwaukee, WI
Posts: 4,588
Default

Quote:
Originally Posted by akirabakabaka
[Snip!]I see this a lot in the Ashmore's Paradox thread. Are you trying to claim that because the magnitudes of 64km/s/Mpc and 0.6m^-3 are different there is no relation?
They are not even in the same units nor are they convertible into one another using c, hbar and G. The current accepted value of H0 is about 2.5E-18 s^-1. You could convert it to m^-3 by multiplying it by c^2/G/hbar, and arrive at 3.4E+42, not 0.6.
Quote:
Originally Posted by akirabakabaka
Well of course there isn't... you need to convert to similar units first! lyndonashmore does this repeatedly on his website and in that thread, showing that when converted to SI units the values are almost identical (~2.1x10-18 s-1).
No, most of the time he trumpets his "paradox" that H0 is "equal to hr/m per cubic metre". He has yet to realize that this only works in SI units. It doesn't work in cgs, much less in those goofy units us Americans still use! He still has not cleaned up all the instances of what has been dubbed "Ashmore's Fallacy" from his website, indeed he still states it that way here occasionally.
Quote:
Originally Posted by akirabakabaka
Also, the correct relation is H = 2nhr/m.
Only the units are correct. He gives an erroneous argument for his factor of 2.
Quote:
Originally Posted by akirabakabaka
So, convert H to m^-3 or n to km/s/Mpc, it doesn't matter, the values will be the same when a proper relation is made with similar units.[Snip!]
This cavalier treatment of units is not much better than the non-sequiturs we get from Lunatik.
__________________
Microsoft is over if you want it.

The bar has been lowered for the promotion of ATM ideas; the bar for the acceptance of ATM ideas must remain high.

I now officially condemn CM's skits as smartaleck, ignorant, sophomoric, inflammatory and and a poor reflection on the level of discussion in BAUT. -- Bob Angstrom
  #37 (permalink)  
Old 09-May-2005, 06:12 PM
akirabakabaka akirabakabaka is offline
Established Member
 
Join Date: Apr 2005
Posts: 510
Default

Quote:
Originally Posted by Celestial Mechanic
He has yet to realize that this only works in SI units. It doesn't work in cgs, much less in those goofy units us Americans still use! He still has not cleaned up all the instances of what has been dubbed "Ashmore's Fallacy" from his website, indeed he still states it that way here occasionally.
Ok, I feel like I've lost my mind here. If the two values are equal when expressed in the same units, why does it matter what units are used??? Ashmore shows that 64km/s/Mpc = 0.6m^-3 = 2.1x10-18 s-1, what is the problem? You can protest that he is misapplying theorems, but his use of Mossbauer et al. on IG plasma to derive this relation is supported by observation.

Quote:
Originally Posted by Celestial Mechanic
Quote:
Originally Posted by akirabakabaka
Also, the correct relation is H = 2nhr/m.
Only the units are correct. He gives an erroneous argument for his factor of 2.
See my next post.

Quote:
Originally Posted by Celestial Mechanic
Quote:
Originally Posted by akirabakabaka
So, convert H to m^-3 or n to km/s/Mpc, it doesn't matter, the values will be the same when a proper relation is made with similar units.[Snip!]
This cavalier treatment of units is not much better than the non-sequiturs we get from Lunatik.
You realize that km/s/Mpc is a horrible mistreatment of data as described by Hubble himself?? He repeatedly stressed the fact that redshifts should be referred to as apparent radial-velocities, but BB supporters often confuse this with a Doppler shift (as seen in the Ashmore's Paradox thread) because of these strange units that are used. If cosmologists had stuck to the same units as everyone else, the H=2nhr/m relation may have been apparent a long time ago.
__________________
there is no governor anywhere
  #38 (permalink)  
Old 09-May-2005, 06:16 PM
akirabakabaka akirabakabaka is offline
Established Member
 
Join Date: Apr 2005
Posts: 510
Default

Quote:
Originally Posted by papageno
Ashmore's first "paradox" depends on using a particular set of units.
Which would be nonsense if the relation was not simply a numerical coincidence.
That's like saying that 1m/s is somehow inherently different than 100cm/s, or worse 'just a coincidence'. This is patently false, yet repeatedly claimed in these threads. If the values are equal when converted to the same units, the there is no dependence on units.

Quote:
Originally Posted by papageno
If it really expressed some physical relation, the units would balanced on both sides and equality would hold independently of the system of units.
I think this is redundant. Regardless, the units DO balance. I thought this dispute was taken care of in the Paradox thread.

Quote:
Originally Posted by papageno
Ashmore tried to fix this problem by introducing, completely ad hoc, the density of electrons in intergalactic space.


The units now balance properly, however there is no justification for using the electron density (except for an attempt to get the right numbers).
Quote:
Originally Posted by akirabakabaka
lyndonashmore does this repeatedly on his website and in that thread, showing that when converted to SI units the values are almost identical (~2.1x10-18 s-1). Also, the correct relation is H = 2nhr/m. So, convert H to m^-3 or n to km/s/Mpc, it doesn't matter, the values will be the same when a proper relation is made with similar units.
If Ashmore's "paradox" really was a sign of an underlying physical relationship, he would not need this ad hoc fix, with no physical justification.
This was claimed by Celestial Mechanic as well. Do you disagree with Ashmore's treatment of photon collisions? Ashmore's paper derives the electron density dependance from the mean free path of the photons. It is not ad-hoc, it is the central point of the theory; that light loses energy as it hits electrons in IG plasma. Do we all need to read Ashmore's paper over again?

Quote:
Originally Posted by papageno
Quote:
Originally Posted by akirabakabaka
Quote:
Originally Posted by Sylas
Lyndon does present another equation which has correct units: 2nhr/m, where n is an electron density.

However, a good value for n is not known, and so Lyndon merely tuned this parameter to get a match.
I believe that n has been determined observationally to a much higher degree of accuracy than the ratios of isotopes used to describe BB nucleosynthesis, but could be wrong.. (just looking at error bars here).
Using only the electrons, and only that particular value, is not justified by Ashmore.
Only which particular value? Ashmore cites the range of electron density as 0.1 to 10m^-3, and uses the low-end estimate of the Hubble constant as 64km/s/Mpc, which would require 0.6m^-3 according to the theory. This is well within the constraining values. Which one don't you like? The theory also explains that light loses energy when it hits electrons, so why is using 'only the electrons' not justified? He explains explicitly that the redshift from other particles is very small compared to electrons, and that electrons in IG plasma cause the greatest energy loss.

Quote:
Originally Posted by papageno
Quote:
Originally Posted by akirabakabaka
If observation fit GR without Dark Matter, then it would be self-consistent, but this is not the case.
[SNIP!]
This was not my point.
Ashmore's "theory" is nowhere near as well supported as the BB Theory: it is inconsistent with well established physics, it deals with much narrower range of phenomenology, and is far from being as accurate.
Ashmore has not been able to provide any experimental results to support his ideas.
But BB theory is inconsistent with well supported observations, so who is more wrong, Dark Matter or Tired Light? I prefer to err in favor of observation, not theory. Also, most of the evidence which purportedly favors BB is based on a particular interpretation of apparent radial-velocities (as discovered by Hubble et al.) which believes that space is expanding. Ashmore's theory interprets the redshifts as light losing energy as it hits electrons, so to describe BB extrapolations of the space-expansion interpretation using a wholly different interpretation would be meaningless.

Tired light describes what it describes. If it happens to prove empirically that space is not expanding, then BB's greatest assumption is pulled out from under it. Since there is no direct evidence of this expansion, and no direct evidence of Dark Matter, BB cannot yet have an assumed accuracy.

Quote:
Originally Posted by papageno
Whether modern cosmology needs an ad hoc dark matter is irrelevant to the validity of Ashmore's ideas.
If he used the same standards he uses for the BBT, he would have abandoned his "tired light theory" a long time ago.
The 'standards' of BB are to mess with the observational data to make it fit theory by assuming expansion, then adding inflation, Dark Matter and Dark Energy. None of these are directly supported by observation.

Quote:
Originally Posted by papageno
Quote:
Originally Posted by akirabakabaka
Quote:
Originally Posted by lyndonashmore
In the BB the Hubble constant is a 'free parameter', My theory calculates it. say no more.
Again, Ashmore's value n (number of electrons) is constrained by observation, just as Hubble's constant H has been reduced to 72+-8km/s/Mpc by observation (where such strange units come from assuming the redshift=velocity interpretation, a wonderful bias built into the units). So neither BB nor Ashmore are relying on a 'free parameter', they are both constrained by observation.
Except that Ashmore's calculated Hubble constant has no physical justification, so it is basically worthless.
What the heck does this mean? Ashmore didn't calculate the Hubble constant. Thousands of other workers have been doing that for quite some time now, and came up with 72+-8km/s/Mpc. This value is undisputed. Again, if you don't like his theory then point out where it is wrong.

I would love to continue in the Paradox thread if it is not closed, so that we can discuss the problems in Ashmore's theory. I've read about half of this entire thread, and many of you seem to be misunderstanding IG plasma physics (which I'm sure to be doing as well) and are simply disagreeing with Ashmore because you refuse to accept basic plasma principles. I only suggest this because the same erroneous allegations are still being made, so it would appear the matter is still up for grabs.
__________________
there is no governor anywhere
  #39 (permalink)  
Old 09-May-2005, 06:16 PM
Grey's Avatar
Grey Grey is offline
Order of Kilopi
 
Join Date: May 2003
Location: Michigan
Posts: 3,476
Default

Quote:
Originally Posted by akirabakabaka
Ashmore shows that 64km/s/Mpc = 0.6m^-3 = 2.1x10-18 s-1, what is the problem?
How does he convert inverse cubic meters to inverse seconds?
  #40 (permalink)  
Old 09-May-2005, 06:18 PM
akirabakabaka akirabakabaka is offline
Established Member
 
Join Date: Apr 2005
Posts: 510
Default

Quote:
Originally Posted by Grey
Quote:
Originally Posted by akirabakabaka
Ashmore shows that 64km/s/Mpc = 0.6m^-3 = 2.1x10-18 s-1, what is the problem?
How does he convert inverse cubic meters to inverse seconds?
Read his paper.
__________________
there is no governor anywhere
  #41 (permalink)  
Old 09-May-2005, 06:41 PM
Celestial Mechanic's Avatar
Celestial Mechanic Celestial Mechanic is offline
Order of Kilopi
 
Join Date: Jun 2002
Location: Milwaukee, WI
Posts: 4,588
Default

Quote:
Originally Posted by Grey
Quote:
Originally Posted by akirabakabaka
Ashmore shows that 64km/s/Mpc = 0.6m^-3 = 2.1x10-18 s-1, what is the problem?
How does he convert inverse cubic meters to inverse seconds?
Actually, he doesn't. The original "Ashmore's Fallacy" declared that H was equal to "hr/m per cubic metre". The reason was that, when lyndonashmore's preferred value of H was converted to s^-1 he got 2.1E-18 for it, and when he computed hr/m in SI units he also got 2.1E-18. The only thing is that the units for hr/m are (kg*m^2/s)*m/kg = m^3/s, hence this use of "hr/m per cubic metre". He has corrected this in a few places (but not all!) by multiplying his hr/m by 2*n, where n is the electron density of intergalactic space. This balances the units, and by pulling the value 0.6 m^-3 out of hat for a value of n he gets his equality. However, his justification for the factor of two is in error. He grasps at formulae as if they were straws, using them out of their range of applicability to give the numbers he wants. The same thing, it goes without saying, that he accuses the Big Bang cosmologists of!

Note to akirabakabaka: Please read Ashmore's paper and the critiques of it very carefully. Be very careful about the handling of units, that is lyndonashmore and Lunatik's biggest problem!
__________________
Microsoft is over if you want it.

The bar has been lowered for the promotion of ATM ideas; the bar for the acceptance of ATM ideas must remain high.

I now officially condemn CM's skits as smartaleck, ignorant, sophomoric, inflammatory and and a poor reflection on the level of discussion in BAUT. -- Bob Angstrom
  #42 (permalink)  
Old 09-May-2005, 06:43 PM
papageno's Avatar
papageno papageno is offline
Order of Kilopi
 
Join Date: Feb 2004
Location: Greater London
Posts: 3,390
Default

Quote:
Originally Posted by akirabakabaka
Quote:
Originally Posted by papageno
Ashmore's first "paradox" depends on using a particular set of units.
Which would be nonsense if the relation was not simply a numerical coincidence.
That's like saying that 1m/s is somehow inherently different than 100cm/s, or worse 'just a coincidence'. This is patently false, yet repeatedly claimed in these threads. If the values are equal when converted to the same units, the there is no dependence on units.
So, what happens if you convert the first "paradox" in the units Americans use (miles, inches, whatever)?

Quote:
Originally Posted by akirabakabaka
Quote:
Originally Posted by papageno
If it really expressed some physical relation, the units would balanced on both sides and equality would hold independently of the system of units.
I think this is redundant. Regardless, the units DO balance. I thought this dispute was taken care of in the Paradox thread.
His first "paradox" is expressed as an equality:
H = hr/m.
In order for this to be a proper equality, left hand-side and right hand-side must have the same physical units.
This is not the case for the first "paradox".


Quote:
Originally Posted by akirabakabaka
Quote:
Originally Posted by papageno
Ashmore tried to fix this problem by introducing, completely ad hoc, the density of electrons in intergalactic space.

The units now balance properly, however there is no justification for using the electron density (except for an attempt to get the right numbers).
lyndonashmore does this repeatedly on his website and in that thread, showing that when converted to SI units the values are almost identical (~2.1x10-18 s-1). Also, the correct relation is H = 2nhr/m. So, convert H to m^-3 or n to km/s/Mpc, it doesn't matter, the values will be the same when a proper relation is made with similar units.
Where does n come from?

Quote:
Originally Posted by akirabakabaka
Quote:
Originally Posted by papageno
If Ashmore's "paradox" really was a sign of an underlying physical relationship, he would not need this ad hoc fix, with no physical justification.
This was claimed by Celestial Mechanic as well. Do you disagree with Ashmore's treatment of photon collisions?
If you had read the whole thread, you would know that I disagree and that I explained what is wrong with Ashmore's ideas.

Quote:
Originally Posted by akirabakabaka
Ashmore's paper derives the electron density dependance from the mean free path of the photons. It is not ad-hoc, it is the central point of the theory; that light loses energy as it hits electrons in IG plasma. Do we all need to read Ashmore's paper over again?
Unfortunately for Ashmore, this central point is wrong and it has been shown to be wrong.
If you are really interested, read the thread you linked, and you will see for yourself that Ashmore's "theory" has no physical basis.

Quote:
Originally Posted by akirabakabaka
Quote:
Originally Posted by papageno
Quote:
Originally Posted by akirabakabaka
Quote:
Originally Posted by Sylas
Lyndon does present another equation which has correct units: 2nhr/m, where n is an electron density.

However, a good value for n is not known, and so Lyndon merely tuned this parameter to get a match.
I believe that n has been determined observationally to a much higher degree of accuracy than the ratios of isotopes used to describe BB nucleosynthesis, but could be wrong.. (just looking at error bars here).
Using only the electrons, and only that particular value, is not justified by Ashmore.
Only which particular value? Ashmore cites the range of electron density as 0.1 to 10m^-3, and uses the low-end estimate of the Hubble constant as 64km/s/Mpc, which would require 0.6m^-3 according to the theory.
What happens to his "paradox", when he uses a range of values for n?

Quote:
Originally Posted by akirabakabaka
This is well within the constraining values. Which one don't you like? The theory also explains that light loses energy when it hits electrons, so why is using 'only the electrons' not justified? He explains explicitly that the redshift from other particles is very small compared to electrons, and that electrons in IG plasma cause the greatest energy loss.
Except that his explanation is wrong.
His "double Mossbauer" is non-sensical from a physical point of view.
He has no mechanism for energy loss due to scattering, and preserving the image and consistent red-shift of the objects at the same time.

Quote:
Originally Posted by akirabakabaka
Quote:
Originally Posted by papageno
Quote:
Originally Posted by akirabakabaka
If observation fit GR without Dark Matter, then it would be self-consistent, but this is not the case.
[SNIP!]
This was not my point.
Ashmore's "theory" is nowhere near as well supported as the BB Theory: it is inconsistent with well established physics, it deals with much narrower range of phenomenology, and is far from being as accurate.
Ashmore has not been able to provide any experimental results to support his ideas.
But BB theory is inconsistent with well supported observations, so who is more wrong, Dark Matter or Tired Light? I prefer to err in favor of observation, not theory. Also, most of the evidence which purportedly favors BB is based on a particular interpretation of apparent radial-velocities (as discovered by Hubble et al.) which believes that space is expanding. Ashmore's theory interprets the redshifts as light losing energy as it hits electrons, so to describe BB extrapolations of the space-expansion interpretation using a wholly different interpretation would be meaningless.
The mechanism for this energy loss is non-sensical based on well established fact in plasma physics, based on experimental results.
Ashmore has no physical mechanism that works as he claims.
Hence, his "tired light theory" has no foundation.

Quote:
Originally Posted by akirabakabaka
Tired light describes what it describes. If it happens to prove empirically that space is not expanding, then BB's greatest assumption is pulled out from under it. Since there is no direct evidence of this expansion, and no direct evidence of Dark Matter, BB cannot yet have an assumed accuracy.
There is less evidence supporting this "tired light theory".
Not even Ashmore could come up with any evidence.

Quote:
Originally Posted by akirabakabaka
Quote:
Originally Posted by papageno
Whether modern cosmology needs an ad hoc dark matter is irrelevant to the validity of Ashmore's ideas.
If he used the same standards he uses for the BBT, he would have abandoned his "tired light theory" a long time ago.
The 'standards' of BB are to mess with the observational data to make it fit theory by assuming expansion, then adding inflation, Dark Matter and Dark Energy. None of these are directly supported by observation.
Ashmore messed with his first "paradox" to fix the units....

Quote:
Originally Posted by akirabakabaka
Quote:
Originally Posted by papageno
Quote:
Originally Posted by akirabakabaka
Quote:
Originally Posted by lyndonashmore
In the BB the Hubble constant is a 'free parameter', My theory calculates it. say no more.
Again, Ashmore's value n (number of electrons) is constrained by observation, just as Hubble's constant H has been reduced to 72+-8km/s/Mpc by observation (where such strange units come from assuming the redshift=velocity interpretation, a wonderful bias built into the units). So neither BB nor Ashmore are relying on a 'free parameter', they are both constrained by observation.
Except that Ashmore's calculated Hubble constant has no physical justification, so it is basically worthless.
What the heck does this mean? Ashmore didn't calculate the Hubble constant.
If you read the quote, Ashmore himself said he calculates it...

Quote:
Originally Posted by akirabakabaka
Thousands of other workers have been doing that for quite some time now, and came up with 72+-8km/s/Mpc. This value is undisputed. Again, if you don't like his theory then point out where it is wrong.
I did: read the thread you linked.

Quote:
Originally Posted by akirabakabaka
I would love to continue in the Paradox thread if it is not closed, so that we can discuss the problems in Ashmore's theory. I've read about half of this entire thread, and many of you seem to be misunderstanding IG plasma physics (which I'm sure to be doing as well) and are simply disagreeing with Ashmore because you refuse to accept basic plasma principles. I only suggest this because the same erroneous allegations are still being made, so it would appear the matter is still up for grabs.
Ashmore has proven many times that he does not understand basic physics, let alone plasma physics.
We have explained what is wrong with his ideas.
__________________
papageno


"Why waste time learning, when ignorance is instantaneous?" - Hobbes (Calvin and Hobbes)

"It's all about context!" - Vince Noir (The Mighty Boosh)

"I've never heard of such a brutal and shocking injustice that I cared so little about!" - Zapp Brannigan (Futurama)

"...because the logic of the lines traced from reality is as poor of aesthetic value as it is strict in consistency. " - Paolo Bozzi (Naive Physics - free translation)
  #43 (permalink)  
Old 09-May-2005, 08:38 PM
akirabakabaka akirabakabaka is offline
Established Member
 
Join Date: Apr 2005
Posts: 510
Default

I am only on page 16 of the novel that is the Ashmore's Paradox thread, so forgive me if I am bringing up long-dead arguments here. But so far all I see is a circular debate based on the (flawed) claim that electrons don't oscillate in IG plasma, which they do. The main objection so far is that he is misapplying theorems. It is refuted that Mossbaur et al. cannot be applied, but considering the entirety of Ashmore's paper it appears that observation suggests it can be applied. It is wrong to say specifically the Mossbaur effect because the circumstances are slightly different (there is recoil resulting in energy loss). It has been suggested in the thread that a new term be coined for this effect, the 'double Mossbaur' seems to be the most popular. The resonant/non-resonant argument is the only compelling dissent so far, and has not yet been handled as of page 16, so I'll get back to you on that one!

Quote:
Originally Posted by papageno
So, what happens if you convert the first "paradox" in the units Americans use (miles, inches, whatever)?
In standard units the final expression is in 'per sec' to use lyndonashmore's terminology. I think Americans still use seconds. Regardless, you ignored me. How is 1m/s different from 100cm/s? Equivalence is equivalence. Ashmore was never *required* to use SI units, that's just the units scientists use!

Quote:
Originally Posted by papageno
His first "paradox" is expressed as an equality:
H = hr/m.
In order for this to be a proper equality, left hand-side and right hand-side must have the same physical units.
This is not the case for the first "paradox".
Correct, this is not the case. The case is H=2nhr/m.

Quote:
Originally Posted by papageno
Ashmore tried to fix this problem by introducing, completely ad hoc, the density of electrons in intergalactic space.
The units now balance properly, however there is no justification for using the electron density (except for an attempt to get the right numbers).
As I explained in my last post, this is the point of the theory. Ashmore equated the redshift to light losing energy as it travels through space, an idea supported by Hubble in opposition to expansion. The mechanism proposed is collisions with electrons. Why is this any more ad-hoc than say BB's inflation, which apparently has had no effect on the credibility of BB? A big difference is that the mechanism proposed in the tired-light model (electrons) does not require faith in the mechanics of Creation.

As far as I can tell this has always been a condition of his theory. The problem is that his website initially claimed H=hr/m, which is not entirely accurate, but a generalized form. It seems reasonable that he was trying to protect his work while he waited for his paper to be accepted for publication (which he already explained to be the case). Unfortunately a misconception was created because of this.

Quote:
Originally Posted by papageno
Quote:
Originally Posted by akirabakabaka
Quote:
Originally Posted by papageno
If Ashmore's "paradox" really was a sign of an underlying physical relationship, he would not need this ad hoc fix, with no physical justification.
This was claimed by Celestial Mechanic as well. Do you disagree with Ashmore's treatment of photon collisions?
If you had read the whole thread, you would know that I disagree and that I explained what is wrong with Ashmore's ideas.
By page 16 you are just entering the discussion, Celestial Mechanic, and so far your claims are erroneous. I'll get back to you once I've read the whole thing.

Quote:
Originally Posted by papageno
What happens to his "paradox", when he uses a range of values for n?
The same thing that happens when we use the range of values 72+-8km/s/Mpc for H. The density of electrons in space is obviously not constant, and so n must always be determined observationally, just as H must. The paper states that 64km/s/Mpc "requires Ne ~ 0.5m^-3". A range of about 0.5 to 0.7m^-3 matches the range for H, and still falls within observational constraints.

Quote:
Originally Posted by papageno
Ashmore messed with his first "paradox" to fix the units....
See above. He said it was missing from the website at first to protect his work, which is much more plausible than this conspiracy which has been propogated that the 2n factor was somehow revealed to him in the first couple posts on the BABB and later added 'ad-hoc'. It is a central focus of the paper.

Quote:
Originally Posted by papageno
Quote:
Originally Posted by akirabakabaka
Quote:
Originally Posted by papageno
Except that Ashmore's calculated Hubble constant has no physical justification, so it is basically worthless.
What the heck does this mean? Ashmore didn't calculate the Hubble constant.
If you read the quote, Ashmore himself said he calculates it...
I still don't get what you're saying here. Given an observed electron density on the order of 0.1 to 10 per cubic meter one can 'predict' the range in which Hubble's constant will fall, which in actuality is about 0.6 (72km/s/Mpc). The problem is that these units are meaningless in this tired-light model, so there is no point in converting to them other than to provide a comparison with the space-expansion model. He has explained this several times as the purpose for providing this comparison. If you are suggesting that his model somehow requires Hubble's constant, I believe you are greatly mistaken.

So I'll continue reading the Paradox discussion hoping some new substance comes out of it.
__________________
there is no governor anywhere
  #44 (permalink)  
Old 09-May-2005, 09:14 PM
lyndonashmore lyndonashmore is offline
Banned
 
Join Date: Apr 2004
Location: Gulf
Posts: 1,275
Default

I see the Followers of the BB cannot answer the point about eta having to have two mutually exclusive values to explain the abundances of light elements. As an arguing tactic they are trying to divert the discussion. I am happy, nay ecstatic, to discuss my theory, but not here on this thread. In fact, I would like BA to make the mutual exclusivity of eta in the BB a ‘sticky’ until followers of the BB can come up with an answer on the ATM topics.
Let’s get back to the original point. How can nucleosynthesis remain a pillar of the BB when it only explains a wart on the nose of the universe.
Cheers,
Lyndon
  #45 (permalink)  
Old 09-May-2005, 09:44 PM
Celestial Mechanic's Avatar
Celestial Mechanic Celestial Mechanic is offline
Order of Kilopi
 
Join Date: Jun 2002
Location: Milwaukee, WI
Posts: 4,588
Default

Quote:
Originally Posted by akirabakabaka
[Snip!]By page 16 you are just entering the discussion, Celestial Mechanic, and so far your claims are erroneous. I'll get back to you once I've read the whole thing.[Snip!]
I just checked the "Ashmore's Paradox" thread. My first post is on page 4. My first serious post is on page 6. You may want to start taking notes as you read the old threads!
__________________
Microsoft is over if you want it.

The bar has been lowered for the promotion of ATM ideas; the bar for the acceptance of ATM ideas must remain high.

I now officially condemn CM's skits as smartaleck, ignorant, sophomoric, inflammatory and and a poor reflection on the level of discussion in BAUT. -- Bob Angstrom
  #46 (permalink)  
Old 09-May-2005, 10:03 PM
Grey's Avatar
Grey Grey is offline
Order of Kilopi
 
Join Date: May 2003
Location: Michigan
Posts: 3,476
Default

Quote:
Originally Posted by lyndonashmore
How can nucleosynthesis remain a pillar of the BB when it only explains a wart on the nose of the universe.
As has been pointed out many times, nucleosynthesis models make a prediction of the ratios of certain element abundances, based on the assumption that the universe was once small and hot. That prediction is born out by experiment. Therefore it continues to provide support for such a model.
  #47 (permalink)  
Old 10-May-2005, 01:07 AM
Sylas Sylas is offline
Established Member
 
Join Date: Mar 2005
Location: Newcastle, Australia
Posts: 291
Default

Quote:
Originally Posted by Grey
As has been pointed out many times, nucleosynthesis models make a prediction of the ratios of certain element abundances, based on the assumption that the universe was once small and hot. That prediction is born out by experiment. Therefore it continues to provide support for such a model.
There is a serious question here that gets lost as we deal with more basic misconceptions. We might need a new thread to get away from the trivial errors which doomed this thread from the first post.

There is a significant discrepancy in the predictions, as I understand the matter, which is still not resolved. That is, not all the predictions fit well with experiment. Either there is a problem in the models, or a problem in the measurements, but something is not quite fitting.

The primary reference I have been looking at is by Brian Fields and S. Sarkar: Big Bang Nucleosynthesis (preprint also at astro-ph/0406663). The abstract is up beat, but within the paper there is discussion of a nagging problem.

The problem shows up in figure 20.1 of the paper; a concordance of estimates for Li7, H2 and He4 is not found within the two sigma measurement errors. It does, however, fit within the two sigma systematic error measurements. Basically, this means that there is almost certainly a systematic source of error. This is not all that surprising, given what they are trying to measure; but it is still a discrepancy. Exploring systematic errors is often a fruitful line of research. It can lead to better models for the measurements, or perhaps even for the nucleosynthesis model. Both possibilities are considered in the paper.

Page 6 of the paper puts it thus:
Quote:
Originally Posted by In the nucleosynthesis review paper, Fields and Sarkar
However note that both 4He and 7Li are inconsistent with the CMB (as they are with D) given the error budgets we have quoted. The question then becomes more pressing as to whether this mismatch come from systematic errors in the observed abundances, and/or uncertainties in stellar astrophysics, or whether there might be new physics at work.
I understand that this thread is riddled with basic errors that require a response. They include
  • Misrepresentation of the amount of baryonic matter in the universe. The model being considered has baryonic matter at a bit over 15% of the matter in the universe. A bit more than a wart on a nose!
  • Misunderstanding of how models are tested. In biology, if you have a model that has strong implications about a wart on the nose, then you can test it just fine by examining the wart. That there is a lot more to the body makes no difference. It is incorrect to think that nucleosynthesis is somehow discredited because the underlying physics implies that a lot of matter is not made up of nuclei.
  • Misunderstanding of what ratios are being measured. The model predicts ratios for the very early universe. This has strong implications in the present; which is why the model is testable. But you don't test it just by counting up all the nuclei you can find. You must carefully direct your measures to regions that are expected to reflect or constrain the possible primordial ratios. It makes no difference whether or not there is a lot more non-luminous baryonic matter we can't see. As long as we can identify observations which constrain primordial ratios, then we can test the model.
  • Suggestions that any discrepancy of this model is somehow good news for totally unrelated models, which don't even attempt to explain the same phenomenon and which have far worse problems of their own with error bars than anything seen for big bang nucleosynthesis.

Credible discussion of the real discrepancy will tend to be diluted as long as there are such errors being made in the thread. But it is worth pointing out that buried in the nonsense there may yet be a pearl.

Cheers -- Sylas

[[ Edited to moderate the tone; content unchanged. Also corrected to replace nucleotides with nuclei. (d'oh) ]]
  #48 (permalink)  
Old 10-May-2005, 04:08 AM
Cougar's Avatar
Cougar Cougar is offline
Order of Kilopi
 
Join Date: Aug 2003
Location: The Wild West
Posts: 4,971
Default Re: Is nucleosynthesis still a pilar of the Bb?

Well, there are discrepancies and then there are discrepancies. Take the following two bold and condescending assertions by lyndonashmore:

Quote:
Originally Posted by lyndonashmore
Quote:
Originally Posted by Cougar
It seems you don't understand the complexity and difficulty in obtaining these estimates. Do you have any idea how astronomers go about estimating the helium abundance in the universe through observation?
I understand everything thank you.
Quote:
Originally Posted by lyndonashmore
If you learnt a bit of Physics Cougar you would know that stars produce Hydrogen and Helium in the same ratio.
As pointed out by numerous contributors, lyndon made a huge mistake by claiming that stars produce hydrogen. And I certainly don't buy his attempts to excuse himself.

I would contend that any serious high school student would be able to conclude from the above two ashmore quotations that our highly (self-)esteemed Mr. Ashmore really doesn't know what he's talking about and is making this stuff up as he goes along.

It is therefore doubly curious that the uber-skeptical akibakabaka would do his abrasively best to denounce and belittle every serious astronomer, astrophysicist, and cosmologist who has contributed to their field in the past 80 years, while inexplicably doggedly defending the dubious "theories" of lyndonashmore.

But to each his own, I guess.
__________________
Everyone is entitled to his own opinion, but not his own facts.
  #49 (permalink)  
Old 10-May-2005, 04:39 AM
TravisM's Avatar
TravisM TravisM is offline
Established Member
 
Join Date: Apr 2004
Location: Dayton, OH
Posts: 1,221
Send a message via MSN to TravisM Send a message via Yahoo to TravisM
Default

[removed unecesary line of questioning]
__________________

Feynman
>~~~~<
Science is a way of trying not to fool yourself. The first principle is that you must not fool yourself, and you are the easiest person to fool.

Religion is a culture of faith; science is a culture of doubt.
  #50 (permalink)  
Old 10-May-2005, 04:50 AM
Sylas Sylas is offline
Established Member
 
Join Date: Mar 2005
Location: Newcastle, Australia
Posts: 291
Default Re: Is nucleosynthesis still a pilar of the Bb?

Quote:
Originally Posted by Cougar
Well, there are discrepancies and then there are discrepancies.
Of course. I'm saying the same thing.

You don't need to persuade me of the discrepancies that arise in the minds of certain thread contributors, and you've got basically no hope fixing it. Some people just don't get physics. It's still worthwhile to point out those problems, but then there are also the second set of discrepancies.

Does anyone have a comment on the actual discrepancies mentioned in Fields and Sarkar? These guys are solidly mainstream, and fundamentally they consider that nucleosynthesis does remain good evidence for big bang cosmology. And they also describe a discrepancy between predictions and measurements, and some possible resolutions.

That's the only real discrepancy, and I think it is actually quite interesting.

Cheers -- Sylas
  #51 (permalink)  
Old 10-May-2005, 06:18 AM
lyndonashmore lyndonashmore is offline
Banned
 
Join Date: Apr 2004
Location: Gulf
Posts: 1,275
Default

You forgot this basic misconception, Sylas.
Quote:
The problem shows up in figure 20.1 of the paper; a concordance of estimates for Li7, H2 and He4 is not found within the two sigma measurement errors. It does, however, fit within the two sigma systematic error measurements. Basically, this means that there is almost certainly a systematic source of error. This is not all that surprising, given what they are trying to measure; but it is still a discrepancy. Exploring systematic errors is often a fruitful line of research. It can lead to better models for the measurements, or perhaps even for the nucleosynthesis model. Both possibilities are considered in the paper.
"Almost certainly a systematic error!!!!!"
Its wrong. Thats all. Proof beyond doubt that nucleosynthesis is wrong and yet you cannot accept it.
You had the theory, tested it against experiment and the experiment showed the theory to be wrong.
Its like 1984, "the party says the BB is correct"
"But it goes against experimental results"
The BB party is correct
"But the eta values are mutually exclusive"
"Doesn't matter, the BB party is correct".
"But we need inflation to get the correct results and nobody knows what it is or where it comes from"
"Doesn't matter, the BB party is correct".
"But we need all this dark matter and nucleosynthesis doesn't explain this"
"Doesn't matter, the BB party is correct".
"OK, if I want to get on in the party then I'll say it, the Bb party is corrrect"
"Ah but you are still THINKING that the BB is wrong"
etc etc.
When observation goes against theory, you go with the observations. To say it is almost certainly systematic is rediculous.
Do you realise what it means when two values' 2 sigma's don't overlap?
For one observation to be that far out by chance is one in 20. For both is 1 in 400.
"Ah but you are still THINKING that the BB is wrong"
Cheers,
Lyndon
  #52 (permalink)  
Old 10-May-2005, 07:39 AM
akirabakabaka akirabakabaka is offline
Established Member
 
Join Date: Apr 2005
Posts: 510
Default Re: Is nucleosynthesis still a pilar of the Bb?

Cougar, the whole point of your post is to spread FUD (fear, uncertainty, doubt). Why do you bother posting at all when you don't say anything?

Quote:
Originally Posted by Cougar
Well, there are discrepancies and then there are discrepancies. Take the following two bold and condescending assertions by lyndonashmore:

Quote:
Originally Posted by lyndonashmore
Quote:
Originally Posted by Cougar
It seems you don't understand the complexity and difficulty in obtaining these estimates. Do you have any idea how astronomers go about estimating the helium abundance in the universe through observation?
I understand everything thank you.
Quote:
Originally Posted by lyndonashmore
If you learnt a bit of Physics Cougar you would know that stars produce Hydrogen and Helium in the same ratio.
As pointed out by numerous contributors, lyndon made a huge mistake by claiming that stars produce hydrogen. And I certainly don't buy his attempts to excuse himself.

I would contend that any serious high school student would be able to conclude from the above two ashmore quotations that our highly (self-)esteemed Mr. Ashmore really doesn't know what he's talking about and is making this stuff up as he goes along.

It is therefore doubly curious that the uber-skeptical akibakabaka would do his abrasively best to denounce and belittle every serious astronomer, astrophysicist, and cosmologist who has contributed to their field in the past 80 years, while inexplicably doggedly defending the dubious "theories" of lyndonashmore.

But to each his own, I guess.
You even went so far as to dig up an out of context misstatement from like 6 months ago, which lyndonashmore even corrected later in that discussion. And there was no point of bringing it up in the first place except to attack our characters. We can only assume that you're just looking to start trouble.

You didn't say a single thing in your entire message. Quit wasting our time, please.
__________________
there is no governor anywhere
  #53 (permalink)  
Old 10-May-2005, 12:54 PM
Sylas Sylas is offline
Established Member
 
Join Date: Mar 2005
Location: Newcastle, Australia
Posts: 291
Default

Quote:
Originally Posted by lyndonashmore
You forgot this basic misconception, Sylas.
You're right, I forgot that misconception. My mistake. Please add the following three misconceptions to the four mentioned previously. All these erroneous distractions inhibit meaningful or substantive discussion of the discrepancy in this thread.
  • If there is any failure to get within measurement error bars, this is proof positive that the whole model is worthless.
  • Systematic error bars don't mean anything; they are just fiddle factors and can be ignored in evaluating a result.
  • A 2 sigma error means a 95% chance of the model being wrong.

The first two misconceptions usually arise from an obdurate refusal to show a bit of basic common sense in reading a technical paper.

The third misconception is more subtle. It arises from a basic misunderstanding in statistics. What a two sigma error really means is a 5% chance of getting this result given that that the model is correct.

We can describe this error mathematically. Let M be the event that the model is correct, and R be the event that observe a result two sigma or more away from the model prediction. This means Pr(R|M) = 0.05. The error is to read this as Pr(M|R) = 0.05.

Understanding this third point is important for a proper understanding of the meaning of error bars; but it does not make a great deal of difference in this particular instance. The measurement is sufficiently far out that we can be confident of some kind of systematic error. There is no way in the result to identify the source of the error. That why real scientists identify a range of possible resolutions (systematic measurement error; systematic model error; or a new theory in physics).

Lyndon only recognizes the last of these, and even then he is only capable of seeing this as "big bang physics replaced" without even considering in passing "particle formation physics replaced". This kind of basic error in elementary physics pretty much dooms this thread for credible discussion of the real problems.

Cheers, Sylas
  #54 (permalink)  
Old 10-May-2005, 12:56 PM
Fram's Avatar
Fram Fram is offline
Established Member
 
Join Date: Aug 2004
Location: Buggenhout, Belgium
Posts: 3,140
Default Re: Is nucleosynthesis still a pilar of the Bb?

Quote:
Originally Posted by akirabakabaka
Cougar, the whole point of your post is to spread FUD (fear, uncertainty, doubt). Why do you bother posting at all when you don't say anything?

Quote:
Originally Posted by Cougar
Well, there are discrepancies and then there are discrepancies. Take the following two bold and condescending assertions by lyndonashmore:

Quote:
Originally Posted by lyndonashmore
Quote:
Originally Posted by Cougar
It seems you don't understand the complexity and difficulty in obtaining these estimates. Do you have any idea how astronomers go about estimating the helium abundance in the universe through observation?
I understand everything thank you.
Quote:
Originally Posted by lyndonashmore
If you learnt a bit of Physics Cougar you would know that stars produce Hydrogen and Helium in the same ratio.
As pointed out by numerous contributors, lyndon made a huge mistake by claiming that stars produce hydrogen. And I certainly don't buy his attempts to excuse himself.

I would contend that any serious high school student would be able to conclude from the above two ashmore quotations that our highly (self-)esteemed Mr. Ashmore really doesn't know what he's talking about and is making this stuff up as he goes along.

It is therefore doubly curious that the uber-skeptical akibakabaka would do his abrasively best to denounce and belittle every serious astronomer, astrophysicist, and cosmologist who has contributed to their field in the past 80 years, while inexplicably doggedly defending the dubious "theories" of lyndonashmore.

But to each his own, I guess.
You even went so far as to dig up an out of context misstatement from like 6 months ago, which lyndonashmore even corrected later in that discussion. And there was no point of bringing it up in the first place except to attack our characters. We can only assume that you're just looking to start trouble.

You didn't say a single thing in your entire message. Quit wasting our time, please.
He isn't wasting mine.
__________________
Knowledge is a curse, but ignorance is worse
  #55 (permalink)  
Old 10-May-2005, 01:52 PM
lyndonashmore lyndonashmore is offline
Banned
 
Join Date: Apr 2004
Location: Gulf
Posts: 1,275
Default

Quote:
Originally Posted by Sylas
Quote:
Originally Posted by lyndonashmore
You forgot this basic misconception, Sylas.
You're right, I forgot that misconception. My mistake. Please add the following three misconceptions to the four mentioned previously. All these erroneous distractions inhibit meaningful or substantive discussion of the discrepancy in this thread.
  • If there is any failure to get within measurement error bars, this is proof positive that the whole model is worthless.
  • Systematic error bars don't mean anything; they are just fiddle factors and can be ignored in evaluating a result.
  • A 2 sigma error means a 95% chance of the model being wrong.

The first two misconceptions usually arise from an obdurate refusal to show a bit of basic common sense in reading a technical paper.

The third misconception is more subtle. It arises from a basic misunderstanding in statistics. What a two sigma error really means is a 5% chance of getting this result given that that the model is correct.

We can describe this error mathematically. Let M be the event that the model is correct, and R be the event that observe a result two sigma or more away from the model prediction. This means Pr(R|M) = 0.05. The error is to read this as Pr(M|R) = 0.05.

Understanding this third point is important for a proper understanding of the meaning of error bars; but it does not make a great deal of difference in this particular instance. The measurement is sufficiently far out that we can be confident of some kind of systematic error. There is no way in the result to identify the source of the error. That why real scientists identify a range of possible resolutions (systematic measurement error; systematic model error; or a new theory in physics).

Lyndon only recognizes the last of these, and even then he is only capable of seeing this as "big bang physics replaced" without even considering in passing "particle formation physics replaced". This kind of basic error in elementary physics pretty much dooms this thread for credible discussion of the real problems.

Cheers, Sylas
Now do your sums for the other result and then calculate the probability of both results being 2 sigma out and 'just touching'. The point being is that both results have to be 'way out' (ie you need two 'bad' results) in order for them to overlap - which means multiplying the probabilities.
Cheers,
Lyndon
  #56 (permalink)  
Old 10-May-2005, 01:56 PM
Fram's Avatar
Fram Fram is offline
Established Member
 
Join Date: Aug 2004
Location: Buggenhout, Belgium
Posts: 3,140
Default

Quote:
Originally Posted by lyndonashmore
Quote:
Originally Posted by Sylas
Quote:
Originally Posted by lyndonashmore
You forgot this basic misconception, Sylas.
You're right, I forgot that misconception. My mistake. Please add the following three misconceptions to the four mentioned previously. All these erroneous distractions inhibit meaningful or substantive discussion of the discrepancy in this thread.
  • If there is any failure to get within measurement error bars, this is proof positive that the whole model is worthless.
  • Systematic error bars don't mean anything; they are just fiddle factors and can be ignored in evaluating a result.
  • A 2 sigma error means a 95% chance of the model being wrong.

The first two misconceptions usually arise from an obdurate refusal to show a bit of basic common sense in reading a technical paper.

The third misconception is more subtle. It arises from a basic misunderstanding in statistics. What a two sigma error really means is a 5% chance of getting this result given that that the model is correct.

We can describe this error mathematically. Let M be the event that the model is correct, and R be the event that observe a result two sigma or more away from the model prediction. This means Pr(R|M) = 0.05. The error is to read this as Pr(M|R) = 0.05.

Understanding this third point is important for a proper understanding of the meaning of error bars; but it does not make a great deal of difference in this particular instance. The measurement is sufficiently far out that we can be confident of some kind of systematic error. There is no way in the result to identify the source of the error. That why real scientists identify a range of possible resolutions (systematic measurement error; systematic model error; or a new theory in physics).

Lyndon only recognizes the last of these, and even then he is only capable of seeing this as "big bang physics replaced" without even considering in passing "particle formation physics replaced". This kind of basic error in elementary physics pretty much dooms this thread for credible discussion of the real problems.

Cheers, Sylas
Now do your sums for the other result and then calculate the probability of both results being 2 sigma out and 'just touching'. The point being is that both results have to be 'way out' (ie you need two 'bad' results) in order for them to overlap - which means multiplying the probabilities.
Cheers,
Lyndon
Lyndon, that's what systematic means. If only one result was wrong (or improbable or whatever), it wouldn't be systematic...
__________________
Knowledge is a curse, but ignorance is worse
  #57 (permalink)  
Old 10-May-2005, 02:57 PM
Cougar's Avatar
Cougar Cougar is offline
Order of Kilopi
 
Join Date: Aug 2003
Location: The Wild West
Posts: 4,971
Default Re: Is nucleosynthesis still a pilar of the Bb?

Quote:
Originally Posted by Sylas
You don't need to persuade me of the discrepancies that arise in the minds of certain thread contributors, and you've got basically no hope fixing it. Some people just don't get physics.
You are a wise man, Sylas.
__________________
Everyone is entitled to his own opinion, but not his own facts.
  #58 (permalink)  
Old 10-May-2005, 03:07 PM
Cougar's Avatar
Cougar Cougar is offline
Order of Kilopi
 
Join Date: Aug 2003
Location: The Wild West
Posts: 4,971
Default

Actually, Sylas, it appears this discrepancy between BBN and CMB data was solved four years ago, and there is no longer any discrepancy. At least that's what this site tells us....

Quote:
Originally Posted by fortlewis.edu
After the results of the Degree Angular Scale Interferometer (DASI) CMB measuring experiment were released on 28 April 2001, the BOOMERANG and MAXIMA CMB experiments both found errors in the way they had interpreted their data. Now, all three of these CMB experiments agree with the BBN value for the baryon density or the universe. So this "Millennium Mystery" was indeed a mystery in 2000, but it appears to be solved now, as of 2001.
The case appears to be closed.
__________________
Everyone is entitled to his own opinion, but not his own facts.
  #59 (permalink)  
Old 10-May-2005, 03:11 PM
lyndonashmore lyndonashmore is offline
Banned
 
Join Date: Apr 2004
Location: Gulf
Posts: 1,275
Default

Fram wrote

Quote:
Lyndon, that's what systematic means. If only one result was wrong (or improbable or whatever), it wouldn't be systematic...
But the errors are systematic' in opposite directions!!!
Nice try - didn't work.
cheers,
Lyndon
Actually Fram the technical wording for this 'inverse systematic uncertainties' is 'tension in the results'.
  #60 (permalink)  
Old 10-May-2005, 03:18 PM
lyndonashmore lyndonashmore is offline
Banned
 
Join Date: Apr 2004
Location: Gulf
Posts: 1,275
Default

Quote:
Originally Posted by Cougar
Actually, Sylas, it appears this discrepancy between BBN and CMB data was solved four years ago, and there is no longer any discrepancy. At least that's what this site tells us....

Quote:
Originally Posted by fortlewis.edu
After the results of the Degree Angular Scale Interferometer (DASI) CMB measuring experiment were released on 28 April 2001, the BOOMERANG and MAXIMA CMB experiments both found errors in the way they had interpreted their data. Now, all three of these CMB experiments agree with the BBN value for the baryon density or the universe. So this "Millennium Mystery" was indeed a mystery in 2000, but it appears to be solved now, as of 2001.
The case appears to be closed.
Nope, it appears that this was another little problem the BB followers kept quiet.
Quote:
BBN says that the abundance of baryonic matter (normal atoms) is only about two-thirds as much as the CMB data says it is. And each method is widely believed to carry smaller errors than the size of the disparity between the different measurements.*
We are loking at the relative abundances of the light elements and not the total amount.
Tut Tut Cougar!
Cheers,
Lyndon
Closed Thread


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT. The time now is 01:28 PM.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2010, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.0.0
©  2006 Bad Astronomy and Universe Today