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Can ‘Theory of Ideal Gas’ be model of Vacuum ?
========== .
Comments.
#
Hi Sadovnik

The notion of a ideal gas is only to simplify it's dynamics in order to frame it
in a mathematical model . When dealing with the real world a gas will never
be perfect but at least understanding and the the tools to predict it are in place .
I see no reason for a vacuum to be perfect unless it was at 0 K
The number zero is as demanding number similar to as infinity . Leaving this
aside I believe space can be modeled under ideal conditions . Making it a ideal
gas is another question . I say no but I am not adamant about it . It depends on
what a photon is . Information has to get from a to b in space . If a photon is a
particle then I see no problem with space being modeled after a ideal gas .
However you must take the bitter pill that goes with this . Energy expands
a gas which is in contradiction with relativity . The energy that goes into
expansion can not also increase it's mass due to conservation of energy .
Only when a gas is inhibited from expanded will all the energy go into
more inertia . Even then there is a problem with heat radiation taking energy
out of the system . So you can see in the case of a ideal gas the bulk of the
energy went into expansion . You can not say it is a ideal gas then change
all the rules when relativity comes along . Some would not agree with this
but I see no way around it .
That was an interesting question .
/ John /

#
I think the ideal gas is a good analogy of the vacuum
except the ideal gas sub-particles all travel at the speed of light C.
/ jerrygg38 /

#
only in the most naive way: by defining a vacuum as a gas of density
zero. Of course this is outside the domain of validity for this theory.
/ Lars /

#
1). It's Socrates, not Socratus.

2). You seem not to understand the meaning and use of theoretical
Terms (such as "ideal gas") in scientific theories.

3). Your quotes are taken out of context, making it seem as
if the world's leading physicists are admitting physics doesn't
know anything. This is called "quote mining". It is clearly not true,
and dishonest, to boot.

4). In any rate, even if modern physics were 100% wrong,
that would be no evidence of God's existence, let alone for the truth
of any particular religion.

5). Just because we don't know how something happened doesn't
mean God did it. For thousands of years people didn't know what
causes lightning, so they said it was God being angry and smiting sinners.
They were wrong. Today we don't know what dark energy is, so some
people say it is something God created. But that doesn't mean that's true.

6). Physics WORKS. It allows us to make predictions and experiments
an engineering feats. If it were deeply wrong, your computer would
not work, for example. Religion doesn't work. It cannot reliably predict,
it cannot be tested, it passes no experiments.

7). For this reason, it is very likely that physics is approximately true,
while religion is not.

Avital Pilpel
http://www.avitalpilpel.com/
=========== . .

.
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According to Einstein’s GRT a mass bends a space.
Where did Einstein’s mass come from ?
We don’t have answer
In other words, Einstein Gravity theory is true,
but it is only geometrical theory of gravity.
The GRT doesn’t give complete explanation gravity.
To understand the gravity we need to know :
Where did mass come from ?
========.
S.

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Originally Posted By: socratus
According to Einstein’s GRT a mass bends a space.
Where did Einstein’s mass come from ?
We don’t have answer
In other words, Einstein Gravity theory is true,
but it is only geometrical theory of gravity.
The GRT doesn’t give complete explanation gravity.
To understand the gravity we need to know :
Where did mass come from ?
========.
S.


Why resuscitate a dead thread? It makes me want to reply to all the old posts frown

But to address your new point, to understand gravity we do not need to know where mass comes from. There are numerous possible models (QED, for example) that explain gravity without needing to know where the mass of particles comes from.

For example, in the case of gravitons you have force-carrying particles exchanged between matter. Like other force-carrying particles (AKA force carriers), gravitons are not expected to interact with Higgs bosons or whatever other particle/energy/scalar that produces mass.

And if that confuses you - how mass and gravity would be separate entities - don't worry. Confuses me too. What it comes down to is the difference between scalar particles (which create physical properties) verses force-transmitting ones.

Bryan


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Originally Posted By: ImagingGeek

But to address your new point, to understand gravity
we do not need to know where mass comes from.
There are numerous possible models (QED, for example)
that explain gravity without needing to know where
the mass of particles comes from.
Bryan

QED has nothing to do with gravity.
===.
S.

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Originally Posted By: socratus

QED has nothing to do with gravity.
===.
S.


My bad; always mix up QED, QCD, etc. Same basic principals (or, at least, attempts to use QED-like solutions); different particles and interacting forces.

Bryan


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