## SRT: what is it about?

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### Re: SRT: what is it about?

James S Saint wrote:The phase velocity is not a "thing". It is a mathematical aberration and the result of the light wave travel velocity. When the light wave slows, the phasing is affected.
I was correcting your earlier assertion that refraction is due to gravity/mass.

James S Saint wrote:If you are bending with the light (as you certainly would), you would not realize that you are bending. But you are still bending, whether you know it at the time or not.

I understand that it is difficult to accept curved space as a reality. We live in what appears as a Euclidean flat space, but Einstein's insights show us that reality is otherwise. The light is not bending in it's own reference frame - any more than it does here on Earth. A straight line is defined as the shortest path between A and B - which light will always follow in a vacuum.
Writers used to write because they had something to say; now they write in order to discover if they have something to say - John Barrow

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### Re: SRT: what is it about?

James S Saint wrote:The phase velocity is not a "thing". It is a mathematical aberration and the result of the light wave travel velocity. When the light wave slows, the phasing is affected.
I was correcting your earlier assertion that refraction is due to gravity/mass.

Yes and I was correcting your earlier correction.

James S Saint wrote:If you are bending with the light (as you certainly would), you would not realize that you are bending. But you are still bending, whether you know it at the time or not.

minesadorada wrote:I understand that it is difficult to accept curved space as a reality. We live in what appears as a Euclidean flat space, but Einstein's insights show us that reality is otherwise. The light is not bending in it's own reference frame - any more than it does here on Earth. A straight line is defined as the shortest path between A and B - which light will always follow in a vacuum.

It isn't just difficult to accept. It is simply incorrect. And Einstein explained that it was merely a matter of perception. But then he died still unsettled as to how to resolve certain matters concerning time.
Clarify, Verify, Instill, and Reinforce the Perception of Hopes and Threats unto Anentropic Harmony
Else
From THIS age of sleep, Homo-sapien shall never awake.

The Wise gather together to help one another in EVERY aspect of living.

You are always more insecure than you think, just not by what you think.
The only absolute certainty is formed by the absolute lack of alternatives.
It is not merely "do what works", but "to accomplish what purpose in what time frame at what cost".
As long as the authority is secretive, the population will be subjugated.

Amid the lack of certainty, put faith in the wiser to believe.
Devil's Motto: Make it look good, safe, innocent, and wise.. until it is too late to choose otherwise.

The Real God ≡ The reason/cause for the Universe being what it is = "The situation cannot be what it is and also remain as it is".
.
James S Saint
ILP Legend

Posts: 25976
Joined: Sun Apr 18, 2010 8:05 pm

### Re: SRT: what is it about?

minesadorada wrote:I understand that it is difficult to accept curved space as a reality.
We live in what appears as a Euclidean flat space,
but Einstein's insights show us that reality is otherwise.
The light is not bending in it's own reference frame -
any more than it does here on Earth.
A straight line is defined as the shortest path between A and B -
which light will always follow in a vacuum.

About Euclidean’s space and Vacuum’s space.
Everybody knows what Euclidean’s space is.
Question: what is Vacuum?
#
"Remember gentlemen, we have not proven
the aether does not exist, we have only proven we do not
need it (for mathematical purposes)"..
/ Einstein's famous University of Leyden lecture
of May 5, 1920./
#
" The problem of the exact description of vacuum, in my opinion,
is the basic problem now before physics. Really, if you can’t correctly
describe the vacuum, how it is possible to expect a correct description
of something more complex? "
/ Paul Dirac ./
#
Herman Minkowski said about his minus 4D
spacetime continuum:
“ Henceforth, space by itself, and time by itself,
and only a kind of union of the two will
preserve an independent reality.”
Question. What is the “a kind of union of the two “?
Nobody knows what really Minkowski space is .
#
“ Unfortunately neither the concept of space nor of time is well defined,
resulting in a dilemma. If we don't know the character of time nor of space,
how can we characterize either? “
http://en.wikipedia.org/wiki/Spacetime
#
"Now we know that the vacuum can have all sorts of wonderful effects
over an enormous range of scales, from the microscopic to the cosmic,"
said Peter Milonni
from the Los Alamos National Laboratory in New Mexico.
======== . .
The secret of God and Life is hiding in the ' Theory of Light Quanta.'
socratus
Thinker

Posts: 786
Joined: Sat Sep 03, 2005 7:27 am
Location: Israel. Kiriat - Gat.

### Re: SRT: what is it about?

socratus wrote:
minesadorada wrote:I understand that it is difficult to accept curved space as a reality.
We live in what appears as a Euclidean flat space,
but Einstein's insights show us that reality is otherwise.
The light is not bending in it's own reference frame -
any more than it does here on Earth.
A straight line is defined as the shortest path between A and B -
which light will always follow in a vacuum.

Actually a straight line is not defined as such at all. It is a shortest distance that has been defined as the straight line, not the other way around. But ISRT redefines length and distance so such semantical games are pointless and circular.
A straight line == the center line of an equal sided cylinder.

socratus wrote:About Euclidean’s space and Vacuum’s space.
Everybody knows what Euclidean’s space is.
Question: what is Vacuum?
#
"Remember gentlemen, we have not proven
the aether does not exist, we have only proven we do not
need it (for mathematical purposes)"..

Glad someone else noticed that besides me.
socratus wrote: / Einstein's famous University of Leyden lecture
of May 5, 1920./
#
" The problem of the exact description of vacuum, in my opinion,
is the basic problem now before physics. Really, if you can’t correctly
describe the vacuum, how it is possible to expect a correct description
of something more complex? "

I can not only define it, but prove aether. But that is no short story.
socratus wrote: / Paul Dirac ./
#
Herman Minkowski said about his minus 4D
spacetime continuum:
“ Henceforth, space by itself, and time by itself,
and only a kind of union of the two will
preserve an independent reality.”
Question. What is the “a kind of union of the two “?
Nobody knows what really Minkowski space is .

Minkowski space is the result of assumptions from ISRT wherein portions of reality must disappear entirely
#
socratus wrote:In Wikipedia we can read:
“ Unfortunately neither the concept of space nor of time is well defined,
resulting in a dilemma. If we don't know the character of time nor of space,
how can we characterize either? “
http://en.wikipedia.org/wiki/Spacetime

I'll be taking care of that shortly
Clarify, Verify, Instill, and Reinforce the Perception of Hopes and Threats unto Anentropic Harmony
Else
From THIS age of sleep, Homo-sapien shall never awake.

The Wise gather together to help one another in EVERY aspect of living.

You are always more insecure than you think, just not by what you think.
The only absolute certainty is formed by the absolute lack of alternatives.
It is not merely "do what works", but "to accomplish what purpose in what time frame at what cost".
As long as the authority is secretive, the population will be subjugated.

Amid the lack of certainty, put faith in the wiser to believe.
Devil's Motto: Make it look good, safe, innocent, and wise.. until it is too late to choose otherwise.

The Real God ≡ The reason/cause for the Universe being what it is = "The situation cannot be what it is and also remain as it is".
.
James S Saint
ILP Legend

Posts: 25976
Joined: Sun Apr 18, 2010 8:05 pm

### Re: SRT: what is it about?

James S Saint wrote:Yes and I was correcting your earlier correction.

I was being polite. You stated that the speed of light was slower in glass because of gravity. You were wrong.

James S Saint wrote:If you are bending with the light (as you certainly would), you would not realize that you are bending. But you are still bending, whether you know it at the time or not.

No you are not bending. I said it was difficult to understand, and you evidently don't understand.

James S Saint wrote:It isn't just difficult to accept. It is simply incorrect. And Einstein explained that it was merely a matter of perception. But then he died still unsettled as to how to resolve certain matters concerning time.

A straight line is the shortest line light takes from A to B. That is a definition - not an opinion. I'm sorry you don't accept it as a simple truth. You are over rationalising something that is very simple. Einstein showed how simple it was - even in extreme circumstances which Newton could not envisage. That is why insight is sometimes called 'genius'.
Writers used to write because they had something to say; now they write in order to discover if they have something to say - John Barrow

Posts: 129
Joined: Thu Mar 24, 2011 11:52 am
Location: Tenerife, Spain

### Re: SRT: what is it about?

James S Saint wrote:Yes and I was correcting your earlier correction.

I was being polite. You stated that the speed of light was slower in glass because of gravity. You were wrong.

As was I.
I well understand what you are thinking on this matter and why you are thinking it, but as you have stated yourself,
You are wrong.

I am slowly proving it on a different thread.

Clarify, Verify, Instill, and Reinforce the Perception of Hopes and Threats unto Anentropic Harmony
Else
From THIS age of sleep, Homo-sapien shall never awake.

The Wise gather together to help one another in EVERY aspect of living.

You are always more insecure than you think, just not by what you think.
The only absolute certainty is formed by the absolute lack of alternatives.
It is not merely "do what works", but "to accomplish what purpose in what time frame at what cost".
As long as the authority is secretive, the population will be subjugated.

Amid the lack of certainty, put faith in the wiser to believe.
Devil's Motto: Make it look good, safe, innocent, and wise.. until it is too late to choose otherwise.

The Real God ≡ The reason/cause for the Universe being what it is = "The situation cannot be what it is and also remain as it is".
.
James S Saint
ILP Legend

Posts: 25976
Joined: Sun Apr 18, 2010 8:05 pm

### Re: SRT: what is it about?

James S Saint wrote:
James S Saint wrote:Yes and I was correcting your earlier correction.

I was being polite. You stated that the speed of light was slower in glass because of gravity. You were wrong.

As was I.
I well understand what you are thinking on this matter and why you are thinking it, but as you have stated yourself,
You are wrong.

I am slowly proving it on a different thread.

Which different thread? No need to be cryptic. And I'm not wrong. You just think I am - which is OK, because I think you are wrong too.

Do you still assert glass bends light because of gravity? Do you still assert that a straight line is not the shortest path light takes to go from A to B?

Obfuscation is not a debate.
Writers used to write because they had something to say; now they write in order to discover if they have something to say - John Barrow

Posts: 129
Joined: Thu Mar 24, 2011 11:52 am
Location: Tenerife, Spain

### Re: SRT: what is it about?

On the Paradox of the Stopped Clock, so as to avoid a lot of unnecessary reading, you probably should start here.

minesadorada wrote:And I'm not wrong. You just think I am - which is OK, because I think you are wrong too.

Do you still assert glass bends light because of gravity? Do you still assert that a straight line is not the shortest path light takes to go from A to B?

Obfuscation is not a debate.

That was my point. We were not debating, merely expressing counter opinions. As I said earlier, there are 2 versions of SRT, the RSRT and the ISRT.

If you want to debate, take up the paradox issue.

Btw, you might want to note that according to your ISRT, there is no objective truth, everything is a matter of frame of reference. Thus;

From my frame of reference, my perspective, I am right

So your ISRT is satisfied and you cannot tell me that I am wrong without violating your own ISRT.

But since I accept RSRT with its objective frame, I CAN tell you that you are wrong without violating my RSRT.

Logical consistency determines truth.
Clarify, Verify, Instill, and Reinforce the Perception of Hopes and Threats unto Anentropic Harmony
Else
From THIS age of sleep, Homo-sapien shall never awake.

The Wise gather together to help one another in EVERY aspect of living.

You are always more insecure than you think, just not by what you think.
The only absolute certainty is formed by the absolute lack of alternatives.
It is not merely "do what works", but "to accomplish what purpose in what time frame at what cost".
As long as the authority is secretive, the population will be subjugated.

Amid the lack of certainty, put faith in the wiser to believe.
Devil's Motto: Make it look good, safe, innocent, and wise.. until it is too late to choose otherwise.

The Real God ≡ The reason/cause for the Universe being what it is = "The situation cannot be what it is and also remain as it is".
.
James S Saint
ILP Legend

Posts: 25976
Joined: Sun Apr 18, 2010 8:05 pm

### Re: SRT: what is it about?

The discovery of the electron spin
/ S.A. Goudsmit /

And that was it: the spin; thus is was discovered, in that manner.
Of course we told Ehrenfest about it and then summer was over
and I went again to Amsterdam and various episodes followed.
Naturally, I found it wonderful, because in the formalism which
I knew it fitted perfectly. And the rigorous physics behind it
I did not fathom. But Uhlenbeck, being a good physicist, started
to think about it. ...... "A charge that rotates"......? He claims that he
then went to Lorentz and that Lorentz replied: "Yes, that is very
difficult because it causes the self energy of the electron to be wrong".

And Uhlenbeck also tells you that ........
We had just written a short article in German and given to
Ehrenfest, who wanted to send it to "Naturwissenschaften".
Now it is being told that Uhlenbeck got frightened, went to
Ehrenfest and said:
"Don't send it off, because it probably is wrong;
it is impossible,
one cannot have an electron that rotates at such high speed and
has the right moment". And Ehrenfest replied:
"It is too late, I have sent it off already".
But I do not remember the event, I never had the idea that is was
wrong because I did not know enough. The one thing I remember
is that Ehrenfest said to me:
"Well, that is a nice idea, though it may be wrong.
But you don't yet have a reputation, so you have nothing to lose".
That is the only thing I remember.
http://www.lorentz.leidenuniv.nl/histor ... dsmit.html
======================…
“ . . . . . it is impossible,
one cannot have an electron that rotates at such high speed
and has the right moment".
/ S.A. Goudsmit /
==.
1.
Do we have another way to explain the high speed of rotation
( frequency) of elementary particles?
2.
And if it is possible (!) . . . . . then . . . the constant speed c=1
of quantum of light will be minimal.
And we have theory . . . theory of ‘ Tachyon.’
===.
S.
The secret of God and Life is hiding in the ' Theory of Light Quanta.'
socratus
Thinker

Posts: 786
Joined: Sat Sep 03, 2005 7:27 am
Location: Israel. Kiriat - Gat.

### Re: SRT: what is it about?

socratus wrote:1.
Do we have another way to explain the high speed of rotation
( frequency) of elementary particles?

Well, typical presumptions of that era. Lorentz was wrong.
Lorentz, no doubt, was thinking in terms of a mass rotating and having a momentum factor. Why wouldn't he?
Well, he shouldn't because the effect of mass is not within the particle, but emitted by the particle.
A similar argument could be, and was, made concerning the atom.
How could an electron be orbiting and not emitting radiant energy?
Science actually gave up and skipped over that one and just accepted the idea of quantumization as a fundamental principle without per se cause. Actually quantizing occurs for an exact and predictable reason and is not merely a fundamental force, but an aberrant effect.

The spin of particles is similar. It implies that there should be energy involved and even lost, but in reality, it doesn't work like that. The mass is not what spins, but merely the particle. There is no momentum involved. The mass is the resultant effect of the particle's spinning. But don't try to correlate a spin to mass, because what is measured as "spin", not spinning. It is the magnetic moment of a particle that is spinning that is measured. A particle can have no measurable "spin", magnetic moment, yet have the same mass as any other, because the spinning that is within, isn't polarized such as to yield an identifiable moment.

Actually, a better way to think of it is;
A particle is spinning and tumbling energy that produces mass.
It is not a spinning and tumbling mass that produces energy.
The precise manner it tumbles is what determines its "spin" type.

socratus wrote:2.
And if it is possible (!) . . . . . then . . . the constant speed c=1
of quantum of light will be minimally.
And we have theory . . . theory of ‘ Tachyon.’
===.
S.

I can't interpret that.
Clarify, Verify, Instill, and Reinforce the Perception of Hopes and Threats unto Anentropic Harmony
Else
From THIS age of sleep, Homo-sapien shall never awake.

The Wise gather together to help one another in EVERY aspect of living.

You are always more insecure than you think, just not by what you think.
The only absolute certainty is formed by the absolute lack of alternatives.
It is not merely "do what works", but "to accomplish what purpose in what time frame at what cost".
As long as the authority is secretive, the population will be subjugated.

Amid the lack of certainty, put faith in the wiser to believe.
Devil's Motto: Make it look good, safe, innocent, and wise.. until it is too late to choose otherwise.

The Real God ≡ The reason/cause for the Universe being what it is = "The situation cannot be what it is and also remain as it is".
.
James S Saint
ILP Legend

Posts: 25976
Joined: Sun Apr 18, 2010 8:05 pm

### Re: SRT: what is it about?

you guys are impressive.......i wish you could teach us dummies......
turtle
ILP Legend

Posts: 8005
Joined: Thu Sep 16, 2010 2:41 pm

### Re: SRT: what is it about?

turtle wrote:you guys are impressive.......i wish you could teach us dummies......

Yeah, so do I.

Clarify, Verify, Instill, and Reinforce the Perception of Hopes and Threats unto Anentropic Harmony
Else
From THIS age of sleep, Homo-sapien shall never awake.

The Wise gather together to help one another in EVERY aspect of living.

You are always more insecure than you think, just not by what you think.
The only absolute certainty is formed by the absolute lack of alternatives.
It is not merely "do what works", but "to accomplish what purpose in what time frame at what cost".
As long as the authority is secretive, the population will be subjugated.

Amid the lack of certainty, put faith in the wiser to believe.
Devil's Motto: Make it look good, safe, innocent, and wise.. until it is too late to choose otherwise.

The Real God ≡ The reason/cause for the Universe being what it is = "The situation cannot be what it is and also remain as it is".
.
James S Saint
ILP Legend

Posts: 25976
Joined: Sun Apr 18, 2010 8:05 pm

### Re: SRT: what is it about?

James S Saint wrote:
turtle wrote:you guys are impressive.......i wish you could teach us dummies......

Yeah, so do I.

that was really a good one......saint you do some things good.....
turtle
ILP Legend

Posts: 8005
Joined: Thu Sep 16, 2010 2:41 pm

### Re: SRT: what is it about?

Another impressive explanation by Mr. ‘john heath ‘
as good as explanation by Mr. ‘James S Saint.’
#
Nice bit of history .
It is always good to know how ideas evolved .
As to electron spin there is a addition variable that should be considered .
If a magnetic field is set up electrons can be separated into up and down spin .
If only up spin electron are separated then put through a addition magnet field
at 90 degrees to the first field the the up electrons will separate into a 50 / 50 mix
of up and down electrons . You see the problem . If only up electrons can separate
into up and down electron then the spin is not a property of the electron .
The spin property of a electron is imposed on it by the environment .
Some what like a tennis ball skimming off the side of a wall picking up a spin .
/ john heath /
The secret of God and Life is hiding in the ' Theory of Light Quanta.'
socratus
Thinker

Posts: 786
Joined: Sat Sep 03, 2005 7:27 am
Location: Israel. Kiriat - Gat.

### Re: SRT: what is it about?

James S Saint wrote:
socratus wrote:1.
Do we have another way to explain the high speed of rotation
( frequency) of elementary particles?

Well, he shouldn't because the effect of mass is not within the particle,
but emitted by the particle.
/ James S Saint /

Well, he shouldn't because the effect of mass is not within
the particle, but emitted by the particle.
/ James S Saint /
#
Exactly, mass is not primary property of particle,
it is its influence to the surround.
Again very simple example:
two vacancies tend to be attracted and two interstitials tend to be repulsed

Or: two parallel whirls are attracted and two antiparallel whirls are repulsed

BTW the "spin" phenomenon has the same "motor" as inertial motion has –
it is universal motion of the "presence" to the "future" - m*c^2 ~ kinetic energy
of this motion... Spin is whirl by which is "particle"/defect replicated,
flows to the future.
/Cerveny /
=====================.
The secret of God and Life is hiding in the ' Theory of Light Quanta.'
socratus
Thinker

Posts: 786
Joined: Sat Sep 03, 2005 7:27 am
Location: Israel. Kiriat - Gat.

### Re: SRT: what is it about?

You also might be interested in the actual cause of mass attraction.

It is caused by a 45 degree swirl of affectance wave emitted by every particle. No energy is emitted, mere variations in affectance and can be detected by cosmic ray range detectors. The swirling of the EM inside the particle is at the same speed as the radiation leaving the particle, hence 45 degree waves.

The 45 degree affectance waves, when encountering a particle tumbling, cause the effect of the closer EM wave portion to slow and thus the entire particle rolls toward the epicenter of the approaching wave, its origin. Every particle is doing that exact same thing and thus all particles cause every other particle to slowly roll toward them.

In combination of trillions, the effect of the waves is amplified - gravity.
Clarify, Verify, Instill, and Reinforce the Perception of Hopes and Threats unto Anentropic Harmony
Else
From THIS age of sleep, Homo-sapien shall never awake.

The Wise gather together to help one another in EVERY aspect of living.

You are always more insecure than you think, just not by what you think.
The only absolute certainty is formed by the absolute lack of alternatives.
It is not merely "do what works", but "to accomplish what purpose in what time frame at what cost".
As long as the authority is secretive, the population will be subjugated.

Amid the lack of certainty, put faith in the wiser to believe.
Devil's Motto: Make it look good, safe, innocent, and wise.. until it is too late to choose otherwise.

The Real God ≡ The reason/cause for the Universe being what it is = "The situation cannot be what it is and also remain as it is".
.
James S Saint
ILP Legend

Posts: 25976
Joined: Sun Apr 18, 2010 8:05 pm

### Re: SRT: what is it about?

That's wrong I'm afraid James. What you're describing in your own sweet way is electromagnetism. Two charged particles such as the electron and proton have opposite "swirl" such that their chiral electromagnetic fields mask one another. There is however a trace or two. One is magnetism, which you see when all the electron spins are lined up in say a ferromagnet. Another trace is gravity. It's essentially a refraction, hence gravitational lensing. See Inhomogeneous Vacuum: An Alternative Interpretation of Curved Spacetime for an interesting read. Here's a fair-use excerpt:

"The refractive index of vacuum, as a special optical medium, may be changed under the influence of gravitational matter. In fact, there has been a long history of such an idea. In 1920, Eddington[26] suggested that the light deflection in solar gravitational field can be conceived as a refraction effect of the space (actually the vacuum) in a flat spacetime. The idea was further studied by Wilson,[27] Dicke,[28] Felice,[29] and Nandi et al.[30¡32] Recently, this thought of vacuum has been investigated further by Puthoff[13;14] and Vlokh.[33] In Puthoff''s paper, the influence of gravitational field on the vacuum refractive index is analysed through the vacuum polarization..."
Farsight
Thinker

Posts: 528
Joined: Sat Jun 20, 2009 6:24 am

### Re: SRT: what is it about?

Farsight wrote:That's wrong I'm afraid James. What you're describing in your own sweet way is electromagnetism.

Emm.. no, by your following rhetoric, I can see that you misuderstood it.
Farsight wrote:Two charged particles such as the electron and proton have opposite "swirl" such that their chiral electromagnetic fields mask one another. There is however a trace or two. One is magnetism, which you see when all the electron spins are lined up in say a ferromagnet. Another trace is gravity. It's essentially a refraction, hence gravitational lensing. See Inhomogeneous Vacuum: An Alternative Interpretation of Curved Spacetime for an interesting read. Here's a fair-use excerpt:

"The refractive index of vacuum, as a special optical medium, may be changed under the influence of gravitational matter. In fact, there has been a long history of such an idea. In 1920, Eddington[26] suggested that the light deflection in solar gravitational field can be conceived as a refraction effect of the space (actually the vacuum) in a flat spacetime. The idea was further studied by Wilson,[27] Dicke,[28] Felice,[29] and Nandi et al.[30¡32] Recently, this thought of vacuum has been investigated further by Puthoff[13;14] and Vlokh.[33] In Puthoff''s paper, the influence of gravitational field on the vacuum refractive index is analysed through the vacuum polarization..."

The theory of "spacetime curving" and "gravitational lensing" are merely mental models that disregard the concept of Euclidean geometry. They are the end result of mathematical graphing. They are not entities or properties of anything other than their aberrant end effects.

In a sense, you and most of physics these days, are confusing the map with the terrain. My explanation of the affectance field is certainly not incorrect and actually addresses the physical existence involved rather than a mathematical aberration presumed to be an entity.
Clarify, Verify, Instill, and Reinforce the Perception of Hopes and Threats unto Anentropic Harmony
Else
From THIS age of sleep, Homo-sapien shall never awake.

The Wise gather together to help one another in EVERY aspect of living.

You are always more insecure than you think, just not by what you think.
The only absolute certainty is formed by the absolute lack of alternatives.
It is not merely "do what works", but "to accomplish what purpose in what time frame at what cost".
As long as the authority is secretive, the population will be subjugated.

Amid the lack of certainty, put faith in the wiser to believe.
Devil's Motto: Make it look good, safe, innocent, and wise.. until it is too late to choose otherwise.

The Real God ≡ The reason/cause for the Universe being what it is = "The situation cannot be what it is and also remain as it is".
.
James S Saint
ILP Legend

Posts: 25976
Joined: Sun Apr 18, 2010 8:05 pm

### Re: SRT: what is it about?

James S Saint wrote:Emm.. no, by your following rhetoric, I can see that you misunderstood it.
No James, I understand this. Light curves in a gravitational field because there's a gradient in vacuum impedance in the space it's travelling through. Not because "the spacetime is curved". Anybody who asserts the latter is confusing cause and effect.

This isn't just something I've made up. Take a look at what Newton said in Opticks queries 20 and 21:

"Doth not this aethereal medium in passing out of water, glass, crystal, and other compact and dense bodies in empty spaces, grow denser and denser by degrees, and by that means refract the rays of light not in a point, but by bending them gradually in curve lines? ...Is not this medium much rarer within the dense bodies of the Sun, stars, planets and comets, than in the empty celestial space between them? And in passing from them to great distances, doth it not grow denser and denser perpetually, and thereby cause the gravity of those great bodies towards one another, and of their parts towards the bodies; every body endeavouring to go from the denser parts of the medium towards the rarer?

Then there's Einstein:

"In the second place our result shows that, according to the general theory of relativity, the law of the constancy of the velocity of light in vacuo, which constitutes one of the two fundamental assumptions in the special theory of relativity and to which we have already frequently referred, cannot claim any unlimited validity. A curvature of rays of light can only take place when the velocity of propagation of light varies with position".

"According to this theory the metrical qualities of the continuum of space-time differ in the environment of different points of space-time, and are partly conditioned by the matter existing outside of the territory under consideration. This space-time variability of the reciprocal relations of the standards of space and time, or, perhaps, the recognition of the fact that ‘empty space’ in its physical relation is neither homogeneous nor isotropic, compelling us to describe its state by ten functions (the gravitation potentials gμν), has, I think, finally disposed of the view that space is physically empty".

James S Saint wrote:The theory of "spacetime curving" and "gravitational lensing" are merely mental models that disregard the concept of Euclidean geometry. They are the end result of mathematical graphing. They are not entities or properties of anything other than their aberrant end effects.
Gravitational lensing is something real. It happens, we can see it. That's no mental model. But the given explanation of "curved spacetime" is. Einstein didn't describe it as such, see this paper for a bit of history on this.

James S Saint wrote:In a sense, you and most of physics these days, are confusing the map with the terrain.
Not me.

James S Saint wrote:My explanation of the affectance field is certainly not incorrect and actually addresses the physical existence involved rather than a mathematical aberration presumed to be an entity.
Shrug. Like I said, what you're describing is electromagnetism, not gravity. Take a look at There is a space-time vortex around Earth. This is something that's come out of Gravity Probe B. See where it says: Our planet spins, and the spin should twist the dimple, slightly, pulling it around into a 4-dimensional swirl. That swirl is the gravitomagnetic field, not the gravitational field.
Farsight
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### Re: SRT: what is it about?

farsight---i think i follow you but i dont get the gravitomagnetic term....what does vacuum impedance have to do with magnetic....
turtle
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### Re: SRT: what is it about?

Farsight wrote:
James S Saint wrote:Emm.. no, by your following rhetoric, I can see that you misunderstood it.
No James, I understand this. Light curves in a gravitational field because there's a gradient in vacuum impedance in the space it's travelling through. Not because "the spacetime is curved". Anybody who asserts the latter is confusing cause and effect.

By "it" I was referring to what you read of my post.

But again and no pun intended but, the "impedance of space" is a vacuous term. Impedance is the result of something. I was talking about the cause of its impedance. If you are going to argue with me, get on the same page. Your quotes back me up more than contend with me.

Farsight wrote:Gravitational lensing is something real. It happens, we can see it. That's no mental model. But the given explanation of "curved spacetime" is.
I didn't say it wasn't real. But, what actually causes gravitational lensing? In fact what actually causes gravity itself? What causes that impedance and its variance? That is what was being addressed. Magnetism is a different related issue and you have been confusing two kinds of spins with your magnetism references.
Clarify, Verify, Instill, and Reinforce the Perception of Hopes and Threats unto Anentropic Harmony
Else
From THIS age of sleep, Homo-sapien shall never awake.

The Wise gather together to help one another in EVERY aspect of living.

You are always more insecure than you think, just not by what you think.
The only absolute certainty is formed by the absolute lack of alternatives.
It is not merely "do what works", but "to accomplish what purpose in what time frame at what cost".
As long as the authority is secretive, the population will be subjugated.

Amid the lack of certainty, put faith in the wiser to believe.
Devil's Motto: Make it look good, safe, innocent, and wise.. until it is too late to choose otherwise.

The Real God ≡ The reason/cause for the Universe being what it is = "The situation cannot be what it is and also remain as it is".
.
James S Saint
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### Re: SRT: what is it about?

wow this is good......
yeah how about gravity--what is going on...
turtle
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Joined: Thu Sep 16, 2010 2:41 pm

### Re: SRT: what is it about?

And also Farsight,

You know that a change in electric potential causes a magnetic field (or you can think of it the other way around since you can't have one without the other), but what causes that? Why is an electric field change always accompanied by a magnetic field?
Clarify, Verify, Instill, and Reinforce the Perception of Hopes and Threats unto Anentropic Harmony
Else
From THIS age of sleep, Homo-sapien shall never awake.

The Wise gather together to help one another in EVERY aspect of living.

You are always more insecure than you think, just not by what you think.
The only absolute certainty is formed by the absolute lack of alternatives.
It is not merely "do what works", but "to accomplish what purpose in what time frame at what cost".
As long as the authority is secretive, the population will be subjugated.

Amid the lack of certainty, put faith in the wiser to believe.
Devil's Motto: Make it look good, safe, innocent, and wise.. until it is too late to choose otherwise.

The Real God ≡ The reason/cause for the Universe being what it is = "The situation cannot be what it is and also remain as it is".
.
James S Saint
ILP Legend

Posts: 25976
Joined: Sun Apr 18, 2010 8:05 pm

### Re: SRT: what is it about?

James S Saint wrote:But again and no pun intended but, the "impedance of space" is a vacuous term. Impedance is the result of something. I was talking about the cause of its impedance. If you are going to argue with me, get on the same page. Your quotes back me up more than contend with me.
Yes, I back you up, and like I said on another thread, you're not entirely wrong. But you're wrong about some things, and I need to correct you because if I don't the wrong things you say will undermine the right things you say.

James S Saint wrote:I didn't say it wasn't real. But, what actually causes gravitational lensing? In fact what actually causes gravity itself? What causes that impedance and its variance? That is what was being addressed. Magnetism is a different related issue and you have been confusing two kinds of spins with your magnetism references.
What causes it is a variation in spatial energy density. This imparts an energy density gradient in the surrounding space, so the wave-related properties of that space are no longer uniform. It's a little bit like varying the elastic properties of a solid material by compressing it.

James S Saint wrote:You know that a change in electric potential causes a magnetic field (or you can think of it the other way around since you can't have one without the other), but what causes that? Why is an electric field change always accompanied by a magnetic field?
Because it's the electromagnetic field. There aren't two different fields. It's one field and two forces. Think about the "electric field lines" associated with a proton or an electron:

Then think about the magnetic field lines around a current in a wire:

You've got radial lines and you've got concentric lines. Combine them to get an idea of what the electromagnetic field is really like:

There's your swirl. The electron has spin angular momentum and magnetic dipole moment, think of it as something like a vortex. Two identical vortexes move directly away from each other. However if you sling one towards the other they swirl around each other too. There's linear motion and rotational motion, if you only see the linear motion you call it an electric field. If you only see the rotational motion you call it a magnetic field. But there's only one field making this motion happen, the electromagnetic field.
Farsight
Thinker

Posts: 528
Joined: Sat Jun 20, 2009 6:24 am

### Re: SRT: what is it about?

Farsight wrote: you're not entirely wrong. But you're wrong about some things, and I need to correct you because if I don't the wrong things you say will undermine the right things you say.

Well I am definitely interested in anything inconsistent that I have said, but I haven't seen where I have done that. And you don't seem to have pointed it out.

Farsight wrote: What causes it is a variation in spatial energy density. This imparts an energy density gradient in the surrounding space, so the wave-related properties of that space are no longer uniform. It's a little bit like varying the elastic properties of a solid material by compressing it.

Your error is in assuming that what you just said is actually different than what I described. Except you seem to have gotten the notion that "energy density" is some smooth uniform field as the surface of deep or deeper water. There is a degree of truth in that, areas of greater affectance are about and they will indeed compel motion of distant entities. The problem is that such areas repel other similar areas, not attract them. Without particles, energy disperses. You know that.

Farsight wrote:
James S Saint wrote:You know that a change in electric potential causes a magnetic field (or you can think of it the other way around since you can't have one without the other), but what causes that? Why is an electric field change always accompanied by a magnetic field?
Because it's the electromagnetic field. There aren't two different fields. It's one field and two forces.

Well now you are being insulting.

So you claim that one cannot have a electric field without a magnetic field because they are the same field?

Surely you know that one doesn't appear until you try to move the other..?

My question to you was why it is that one only appears when you move the other. Saying that it is because they are [called] "electromagnetic" and thus are one, is a bit trite and certainly doesn't answer the question.

Farsight wrote: Two identical vortexes move directly away from each other. However if you sling one towards the other they swirl around each other too.

Until they sling back away, which without an additional effect involved, they certainly would... and right away.

Farsight wrote: There's linear motion and rotational motion, if you only see the linear motion you call it an electric field. If you only see the rotational motion you call it a magnetic field. But there's only one field making this motion happen, the electromagnetic field.

I think you are throwing in a little too much imagination into that explanation. An electric field is merely the linear component of a electromagnetic field??

A single point charge moving in a straight line (linearly) instantly develops a magnetic field surrounding it when there are no rotations involved... why?
Clarify, Verify, Instill, and Reinforce the Perception of Hopes and Threats unto Anentropic Harmony
Else
From THIS age of sleep, Homo-sapien shall never awake.

The Wise gather together to help one another in EVERY aspect of living.

You are always more insecure than you think, just not by what you think.
The only absolute certainty is formed by the absolute lack of alternatives.
It is not merely "do what works", but "to accomplish what purpose in what time frame at what cost".
As long as the authority is secretive, the population will be subjugated.

Amid the lack of certainty, put faith in the wiser to believe.
Devil's Motto: Make it look good, safe, innocent, and wise.. until it is too late to choose otherwise.

The Real God ≡ The reason/cause for the Universe being what it is = "The situation cannot be what it is and also remain as it is".
.
James S Saint
ILP Legend

Posts: 25976
Joined: Sun Apr 18, 2010 8:05 pm

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