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Topic: Science > Physics
User: "Ramkins"
Date: 10 Feb 2005 03:10:05 AM
Object: Problems
1. Recently observations have been made that the universe if flat.
Since curvature related to total density this implies that the universe
has the critical density needed to make it flat.
2. This density cannot be accounted for by present observation of
matter and radiation densities. Even if the dark matter that is needed
to make small-scale structure to work is included, the density is still
not enough. Dark Energy is postulated to solve this problem.
3. Some other recent data indicates that the universe is acceleration,
not decelerating as it should after the Big Bang.
4. Some solutions include a new inflationary period and dark energy.
.

User: "Bilge"

Title: Re: Problems 10 Feb 2005 07:18:36 AM
Ramkins:

1. Recently observations have been made that the universe if flat.
Since curvature related to total density this implies that the universe
has the critical density needed to make it flat.

2. This density cannot be accounted for by present observation of
matter and radiation densities. Even if the dark matter that is needed
to make small-scale structure to work is included, the density is still
not enough. Dark Energy is postulated to solve this problem.

3. Some other recent data indicates that the universe is acceleration,
not decelerating as it should after the Big Bang.

4. Some solutions include a new inflationary period and dark energy.

OK. That means there are still some open questions.
.
User: "Ramkins"

Title: Re: Problems 10 Feb 2005 07:26:21 AM
Bilge wrote:

Ramkins:

1. Recently observations have been made that the universe if flat.
Since curvature related to total density this implies that the

universe

has the critical density needed to make it flat.

2. This density cannot be accounted for by present observation of
matter and radiation densities. Even if the dark matter that is

needed

to make small-scale structure to work is included, the density is

still

not enough. Dark Energy is postulated to solve this problem.

3. Some other recent data indicates that the universe is

acceleration,

not decelerating as it should after the Big Bang.

4. Some solutions include a new inflationary period and dark

energy.



OK. That means there are still some open questions.

Yes Bilge. And it may be worthwhile to discuss those and get to know
what the leading brains here in this group are thinking about them.
.
User: "Bill Hobba"

Title: Re: Problems 10 Feb 2005 08:45:33 PM
"Ramkins" <ramkinkar@gmail.com> wrote in message
news:1108041981.865456.112580@z14g2000cwz.googlegroups.com...


Bilge wrote:

Ramkins:

1. Recently observations have been made that the universe if flat.
Since curvature related to total density this implies that the

universe

has the critical density needed to make it flat.

2. This density cannot be accounted for by present observation of
matter and radiation densities. Even if the dark matter that is

needed

to make small-scale structure to work is included, the density is

still

not enough. Dark Energy is postulated to solve this problem.

3. Some other recent data indicates that the universe is

acceleration,

not decelerating as it should after the Big Bang.

4. Some solutions include a new inflationary period and dark

energy.



OK. That means there are still some open questions.


Yes Bilge. And it may be worthwhile to discuss those and get to know
what the leading brains here in this group are thinking about them.

It has been discussed around here before and the issues are exactly as the
link I gave detailed. There are no 'problems'. It just turns out that the
universe may contain exotic matter that violates the strong energy
condition. All this means is - as Bilge says - we have a few open
questions - not problems. Physics in particular and science in general has
always had open questions Such usually do not warrant vague posts with the
title problems.
Bill
.



User: "Bill Hobba"

Title: Re: Problems 10 Feb 2005 04:36:18 AM
"Ramkins" <ramkinkar@gmail.com> wrote in message
news:1108026605.311864.56510@o13g2000cwo.googlegroups.com...

1. Recently observations have been made that the universe if flat.
Since curvature related to total density this implies that the universe
has the critical density needed to make it flat.

2. This density cannot be accounted for by present observation of
matter and radiation densities. Even if the dark matter that is needed
to make small-scale structure to work is included, the density is still
not enough. Dark Energy is postulated to solve this problem.

3. Some other recent data indicates that the universe is acceleration,
not decelerating as it should after the Big Bang.

Why do you think the universe should be decelerating? The assumption you
need to look at is called the strong energy condition and has been called
into question.
Thanks
Bill


4. Some solutions include a new inflationary period and dark energy.

.
User: "Ramkins"

Title: Re: Problems 10 Feb 2005 05:16:36 AM
Bill Hobba wrote:

"Ramkins" <ramkinkar@gmail.com> wrote in message
news:1108026605.311864.56510@o13g2000cwo.googlegroups.com...

1. Recently observations have been made that the universe if flat.
Since curvature related to total density this implies that the

universe

has the critical density needed to make it flat.

2. This density cannot be accounted for by present observation of
matter and radiation densities. Even if the dark matter that is

needed

to make small-scale structure to work is included, the density is

still

not enough. Dark Energy is postulated to solve this problem.

3. Some other recent data indicates that the universe is

acceleration,

not decelerating as it should after the Big Bang.


Why do you think the universe should be decelerating? The assumption

you

need to look at is called the strong energy condition and has been

called

into question.

There is strong evidence coming from the observation of distant Type Ia
Supernova, by two different teams of astronomers,indicating that the
cosmic expansion is not slowing down, but is speeding up.
This observation also strongly supports the in=EF=AC=82ationary theory:
1=2E It con=EF=AC=81rms the theoretical conclusion that gravity can act
repulsively.
2=2E Acceleration equires =E2=80=9Cdark energy =E2=80=9D permeating space,t=
he amount
needed is just right ( + - about 10%)to bring the total mass density up
to
the critical density predicted by in=EF=AC=82ation.(The makeup is about
1%visible
matter,30%dark matter,and 70%=E2=80=9Cdark energy =E2=80=9D.)

Thanks
Bill


4. Some solutions include a new inflationary period and dark

energy.


.
User: "Bill Hobba"

Title: Re: Problems 10 Feb 2005 05:59:27 AM
"Ramkins" <ramkinkar@gmail.com> wrote in message
news:1108034196.052713.189220@c13g2000cwb.googlegroups.com...
Bill Hobba wrote:

"Ramkins" <ramkinkar@gmail.com> wrote in message
news:1108026605.311864.56510@o13g2000cwo.googlegroups.com...

1. Recently observations have been made that the universe if flat.
Since curvature related to total density this implies that the

universe

has the critical density needed to make it flat.

2. This density cannot be accounted for by present observation of
matter and radiation densities. Even if the dark matter that is

needed

to make small-scale structure to work is included, the density is

still

not enough. Dark Energy is postulated to solve this problem.

3. Some other recent data indicates that the universe is

acceleration,

not decelerating as it should after the Big Bang.


Why do you think the universe should be decelerating? The assumption

you

need to look at is called the strong energy condition and has been

called

into question.

Ramkins
There is strong evidence coming from the observation of distant Type Ia
Supernova, by two different teams of astronomers, indicating that the cosmic
expansion is not slowing down, but is speeding up.This observation also
strongly supports the in?ationary theory: 1. It con?rms the theoretical
conclusion that gravity can act
repulsively. 2. Acceleration equires "dark energy " permeating space,the
amount needed is just right ( + - about 10%)to bring the total mass density
up to
the critical density predicted by in?ation.(The makeup is about 1%visible
matter,30%dark matter,and 70%"dark energy ".)
Bill
To provide a reference for the issues involved I found the following link -
http://www.physicstoday.org/vol-56/iss-4/p10.html. Nothing in that link
proposes anything that is an actual problem. Repulsive gravity comes from
the negative pressure of exotic matter that violates the strong energy
condition. No physical principles are violated and no unreasolveable
'problems' (as suggested by the title of the thread) have infiltrated
physics.
Thanks
Bill

Thanks
Bill


4. Some solutions include a new inflationary period and dark

energy.


.
User: "Mike"

Title: Re: Problems 10 Feb 2005 06:36:07 AM
Bill Hobba wrote:

"Ramkins" <ramkinkar@gmail.com> wrote in message
news:1108034196.052713.189220@c13g2000cwb.googlegroups.com...

Bill Hobba wrote:

"Ramkins" <ramkinkar@gmail.com> wrote in message
news:1108026605.311864.56510@o13g2000cwo.googlegroups.com...

1. Recently observations have been made that the universe if

flat.

Since curvature related to total density this implies that the

universe

has the critical density needed to make it flat.

2. This density cannot be accounted for by present observation of
matter and radiation densities. Even if the dark matter that is

needed

to make small-scale structure to work is included, the density is

still

not enough. Dark Energy is postulated to solve this problem.

3. Some other recent data indicates that the universe is

acceleration,

not decelerating as it should after the Big Bang.


Why do you think the universe should be decelerating? The

assumption

you

need to look at is called the strong energy condition and has been

called

into question.


Ramkins
There is strong evidence coming from the observation of distant Type

Ia

Supernova, by two different teams of astronomers, indicating that the

cosmic

expansion is not slowing down, but is speeding up.This observation

also

strongly supports the in?ationary theory: 1. It con?rms the

theoretical

conclusion that gravity can act
repulsively. 2. Acceleration equires "dark energy " permeating

space,the

amount needed is just right ( + - about 10%)to bring the total mass

density

up to
the critical density predicted by in?ation.(The makeup is about

1%visible

matter,30%dark matter,and 70%"dark energy ".)

Bill
To provide a reference for the issues involved I found the following

link -

http://www.physicstoday.org/vol-56/iss-4/p10.html. Nothing in that

link

proposes anything that is an actual problem. Repulsive gravity comes

from

the negative pressure of exotic matter that violates the strong

energy

condition. No physical principles are violated and no unreasolveable
'problems' (as suggested by the title of the thread) have infiltrated
physics.

Except that cosmic radiation has considerably more measured energy than
predicted by the Standard Model, with all its auxiliary hypotheses in
place or not.
Mike


Thanks
Bill

Thanks
Bill


4. Some solutions include a new inflationary period and dark

energy.


.
User: "Dirk Van de moortel"

Title: Re: Problems 10 Feb 2005 06:51:37 AM
"Mike" <eleatis@yahoo.gr> wrote in message news:1108038967.507222.42140@f14g2000cwb.googlegroups.com...


Bill Hobba wrote:

"Ramkins" <ramkinkar@gmail.com> wrote in message
news:1108034196.052713.189220@c13g2000cwb.googlegroups.com...

Bill Hobba wrote:

"Ramkins" <ramkinkar@gmail.com> wrote in message
news:1108026605.311864.56510@o13g2000cwo.googlegroups.com...

1. Recently observations have been made that the universe if

flat.

Since curvature related to total density this implies that the

universe

has the critical density needed to make it flat.

2. This density cannot be accounted for by present observation of
matter and radiation densities. Even if the dark matter that is

needed

to make small-scale structure to work is included, the density is

still

not enough. Dark Energy is postulated to solve this problem.

3. Some other recent data indicates that the universe is

acceleration,

not decelerating as it should after the Big Bang.


Why do you think the universe should be decelerating? The

assumption

you

need to look at is called the strong energy condition and has been

called

into question.


Ramkins
There is strong evidence coming from the observation of distant Type

Ia

Supernova, by two different teams of astronomers, indicating that the

cosmic

expansion is not slowing down, but is speeding up.This observation

also

strongly supports the in?ationary theory: 1. It con?rms the

theoretical

conclusion that gravity can act
repulsively. 2. Acceleration equires "dark energy " permeating

space,the

amount needed is just right ( + - about 10%)to bring the total mass

density

up to
the critical density predicted by in?ation.(The makeup is about

1%visible

matter,30%dark matter,and 70%"dark energy ".)

Bill
To provide a reference for the issues involved I found the following

link -

http://www.physicstoday.org/vol-56/iss-4/p10.html. Nothing in that

link

proposes anything that is an actual problem. Repulsive gravity comes

from

the negative pressure of exotic matter that violates the strong

energy

condition. No physical principles are violated and no unreasolveable
'problems' (as suggested by the title of the thread) have infiltrated
physics.



Except that cosmic radiation has considerably more measured energy than
predicted by the Standard Model, with all its auxiliary hypotheses in
place or not.

Mike

Since you don't even understand the very basics of special
relativity, you better keep your snout about the standard
model and cosmology - don't you think, Undeniable Pig?
Dirk Vdm
.
User: "AllYou!"

Title: Re: Problems 10 Feb 2005 07:08:56 AM
And your bitterness continues..........
.




User: "Bill Hobba"

Title: Re: Problems 10 Feb 2005 05:35:21 AM
"Ramkins" <ramkinkar@gmail.com> wrote in message
news:1108034196.052713.189220@c13g2000cwb.googlegroups.com...
Bill Hobba wrote:

"Ramkins" <ramkinkar@gmail.com> wrote in message
news:1108026605.311864.56510@o13g2000cwo.googlegroups.com...

1. Recently observations have been made that the universe if flat.
Since curvature related to total density this implies that the

universe

has the critical density needed to make it flat.

2. This density cannot be accounted for by present observation of
matter and radiation densities. Even if the dark matter that is

needed

to make small-scale structure to work is included, the density is

still

not enough. Dark Energy is postulated to solve this problem.

3. Some other recent data indicates that the universe is

acceleration,

not decelerating as it should after the Big Bang.


Why do you think the universe should be decelerating? The assumption

you

need to look at is called the strong energy condition and has been

called

into question.

Ramkins
There is strong evidence coming from the observation of distant Type Ia
Supernova, by two different teams of astronomers,indicating that the cosmic
expansion is not slowing down, but is speeding up.This observation also
strongly supports the in?ationary theory: 1. It con?rms the theoretical
conclusion that gravity can act
repulsively. 2. Acceleration equires "dark energy " permeating space,the
amount needed is just right ( + - about 10%)to bring the total mass density
up to
the critical density predicted by in?ation.(The makeup is about 1%visible
matter,30%dark matter,and 70%"dark energy ".)'
Bill
Again I ask - what is your problem? If the universe is accelerating all
that means is one of the assumptions that goes into showing it should be
decelerating is not valid. The one that looks most suspect is the strong
energy condition. Indeed during inflation it is violated - it is one of the
properties of the false vacuum.
Thanks
Bill

Thanks
Bill


4. Some solutions include a new inflationary period and dark

energy.


.



User: "N:dlzc D:aol T:com \dlzc\ N: dlzc1 D:cox"

Title: Re: Problems 10 Feb 2005 08:15:52 AM
Dear Ramkins:
"Ramkins" <ramkinkar@gmail.com> wrote in message
news:1108026605.311864.56510@o13g2000cwo.googlegroups.com...

1. Recently observations have been made that the universe [is]
flat. Since curvature related to total density this implies that the
universe has the critical density needed to make it flat.

Think about definitions and "flat". Note that expansion, and acceleration
(and possibly deceleration) of expansion indicate that spaceTIME is not
exactly flat. At least along the time axis, there is interesting behavior.

2. This density cannot be accounted for by present observation of
matter and radiation densities. Even if the dark matter that is needed
to make small-scale structure to work is included, the density is still
not enough. Dark Energy is postulated to solve this problem.

Dark Energy masks the problem that Dark Matter creates. How does expansion
work without DM? Say MOND describes local variation in G...

3. Some other recent data indicates that the universe is acceleration,
not decelerating as it should after the Big Bang.

One recent observation, between the Earth and the Moon, indicates it has
slowed again. Go figure.

4. Some solutions include a new inflationary period and dark energy.

Looks like there is a place in physics for you!
David A. Smith
.

User: "Uncle Al"

Title: Re: Problems 10 Feb 2005 10:26:54 AM
Ramkins wrote:


1. Recently observations have been made that the universe if flat.
Since curvature related to total density this implies that the universe
has the critical density needed to make it flat.

2. This density cannot be accounted for by present observation of
matter and radiation densities. Even if the dark matter that is needed
to make small-scale structure to work is included, the density is still
not enough. Dark Energy is postulated to solve this problem.

3. Some other recent data indicates that the universe is acceleration,
not decelerating as it should after the Big Bang.

4. Some solutions include a new inflationary period and dark energy.

http://map.gsfc.nasa.gov/
http://arxiv.org/abs/astro-ph/0403292
http://arXiv.org/abs/astro-ph/0310723
WMAP + Sloane Digital Sky Survey
http://arxiv.org/abs/hep-ph/0404175
Dark matter candidates
<http://nedwww.ipac.caltech.edu/level5/March01/Carroll/frames.html>
Carroll on what it all means.
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/qz.pdf
.


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