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Author Topic:   COSMOLOGY
onifre
Member (Idle past 2971 days)
Posts: 4854
From: Dark Side of the Moon
Joined: 02-20-2008


Message 135 of 159 (489724)
11-29-2008 2:43 PM
Reply to: Message 127 by Huntard
11-29-2008 4:59 AM


Re: Big Bang Christian?
Hi Huntard,
There never was a "christian" big bang. there was just the big bang hypothesis. Which was confirmed when Hubble made his discoveries.
Hubble observed the redshift indicating expantion, not the BB.
And subsequently further confirmed when the cosmic microwave background radiation was found.
I may not be understanding what you wrote here but, the CMBR is explained by the Big Bang theory, it does not confirm the BBT.
Oh, and would you mind pointing out exactly what part of Hubble's findings were "garbage"?
JF is talking about the same kind of crap he's talked about before, Hubbles (redshift/universe expanding) not being the correct assessment of Hubbles observable work. It's just ramblings though, he will show you absolutely nothing as far as evidence is concerned, he will also mine quote phyicists and take them completely out of context or misunderstand what is being said.
I think im going to take cavedivers advise that he gave me on another thread and not engage in talks with these guys, its a word mess that is basically nonsense.

"All great truths begin as blasphemies"
"I smoke pot. If this bothers anyone, I suggest you look around at the world in which we live and shut your mouth."--Bill Hicks
"I never knew there was another option other than to question everything"--Noam Chomsky

This message is a reply to:
 Message 127 by Huntard, posted 11-29-2008 4:59 AM Huntard has replied

Replies to this message:
 Message 136 by Straggler, posted 11-29-2008 2:55 PM onifre has replied
 Message 137 by Huntard, posted 11-29-2008 3:22 PM onifre has not replied

  
onifre
Member (Idle past 2971 days)
Posts: 4854
From: Dark Side of the Moon
Joined: 02-20-2008


Message 138 of 159 (489738)
11-29-2008 4:27 PM
Reply to: Message 136 by Straggler
11-29-2008 2:55 PM


Re: Big Bang Christian?
Hi Straggler,
BB theory predicted the CMBR. In fact the BB model predicted the value of the CMBR with extremely good accuracy.
In that sense the discovery and measurement of the CMBR did indeed confirm BB theory.
Shouldn't that read, "Helped confirm the Big Bang"...?
Not, "confirmed the Big Bang Theory"...?
Is it not Einstein's equations that confirms the BBT? The picture of a universe that started off very hot and cooled as it expanded was based off of Einstein's theory of gravity, GR/SR, right?
As I understand it the CMBR helps confirm the theories prediction abilities, right?
Or am I misunderstanding something, which could very well be the case lol.

"All great truths begin as blasphemies"
"I smoke pot. If this bothers anyone, I suggest you look around at the world in which we live and shut your mouth."--Bill Hicks
"I never knew there was another option other than to question everything"--Noam Chomsky

This message is a reply to:
 Message 136 by Straggler, posted 11-29-2008 2:55 PM Straggler has replied

Replies to this message:
 Message 142 by Straggler, posted 11-30-2008 11:34 AM onifre has replied

  
onifre
Member (Idle past 2971 days)
Posts: 4854
From: Dark Side of the Moon
Joined: 02-20-2008


Message 143 of 159 (489862)
11-30-2008 1:36 PM
Reply to: Message 142 by Straggler
11-30-2008 11:34 AM


Re: Big Bang Christian?
Thus, whilst Einstein's GR certainly gave considerable theoretical weight to the idea of the BB, the true empirical test and therefore "confirmation" (beyond reasonable doubt) was the empirical discovery of the predicted CMBR and the practical measurement of it as compared to theory.
Thanks for the explanation Straggler, I agree with what you're saying.
Whilst one theory can support another all theories in science are ultimately subject to empirical results.
I have to agree then, visibly observing the CMBR is a true confirmation of the BB. Thanks.

This message is a reply to:
 Message 142 by Straggler, posted 11-30-2008 11:34 AM Straggler has not replied

  
onifre
Member (Idle past 2971 days)
Posts: 4854
From: Dark Side of the Moon
Joined: 02-20-2008


Message 148 of 159 (490306)
12-03-2008 4:47 PM
Reply to: Message 147 by DevilsAdvocate
12-03-2008 4:10 PM


Re: DA.
Hi DevilsAdvocate,
This negative "gravity" so to speak is also called negative vacuum energy density.
Isn't this called negative pressure...?
Which is cased by a large vacuum energy density that existed during the inflationary epoch...?

"All great truths begin as blasphemies"
"I smoke pot. If this bothers anyone, I suggest you look around at the world in which we live and shut your mouth."--Bill Hicks
"I never knew there was another option other than to question everything"--Noam Chomsky

This message is a reply to:
 Message 147 by DevilsAdvocate, posted 12-03-2008 4:10 PM DevilsAdvocate has replied

Replies to this message:
 Message 153 by DevilsAdvocate, posted 12-04-2008 7:51 AM onifre has not replied

  
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