From: Androcles on

"Esa Riihonen" <esa(a)riihonen.net.not.invalid> wrote in message
news:pan.2010.07.12.14.02.02(a)riihonen.net.not.invalid...
|
| > | My, my - aren't we obsessed with this equator stuff. I already said
| > that | E made a mistake
| >
| > Oh, did he? And you found it! Good for you, go get your Nobel prize.
| > I'll tell you
| > another mistake he made if you like.
|
| AFAIK he did a mistake when initially trying to include gravity in to SR -
| and also AFAIK you are talking about that - hard to tell with all these
| Supermans you are talking about, but I assumed that was he case as you
| have taking this up with others in other threads. So I didn't find it -
| either E himself of some of the contemporaries did find it.

AFAYK you don't know very far at all.

§ 4. Physical Meaning of the Equations Obtained in Respect to Moving Rigid
Bodies and Moving Clocks

See title? Does it say:
Physical Meaning of the Equations Obtained in Respect to Gravity and Clocks?

Learn to read, arsehole.

" a precisely similar clock " -- in other words, a TWIN clock.

Learn to read, arsehole.

"If we assume that the result proved for a polygonal line is also valid for
a continuously curved line"

Not Riihonen's theory of inertial frames, that. It's SR, and in SR
"Geschwindigkeit" means speed, not velocity. The twin clock has no problem
returning in SR, no inertial frames needed

Learn to read, arsehole.

I'll tell you who found it. *I* found it. I can read. But we agree
Einstein fucked up.

From: Daryl McCullough on
harald says...
>
>On Jul 12, 1:04=A0pm, stevendaryl3...(a)yahoo.com (Daryl McCullough)
>wrote:

>> The textbooks that I used, for instance, were *physics* textbooks,
>> not *history* textbooks. There was no claim made that what was being
>> presented was verbatim what Newton or Einstein wrote.
>
>Exactly. How many of them warn the students that some of the presented
>theory is significantly different from the original theories?

If people were coming to class to find out what Newton believed, then
such a warning would be appropriate. But they were going to class to
find out about classical mechanics. Newton was only one source of that
subject.

>> >Students are being fooled into thinking that there
>> >are presented with what essentially are the theories of Newton,
>> >Maxwell and Einstein;
>>
>> No, they're not. It's not even an issue.
>
>Sure it's an issue - there wouldn't be as many cranks around if they
>had not received misleading information to start with.

I think that's completely wrong. Cranks did not become that way from
taking physics classes. Their problem typically is that they don't
actually learn the mathematical structure of the theory, and instead
try to conduct arguments based solely on verbal reasoning, and that's
just much too fuzzy to base an understanding of physics on.

In my experience, cranks are always *extremely* bad at mathematical
(and logical) reasoning. It's not that they were misled.

>Did you see the university link that Pentcho came up with? I'll
>translate it for you:
>
>According to Newton's mechanics, "the traveler on the train who emits
>light waves measures the speed of light, while on the platform we
>measure the sum of the speed of light and that of the train. But
>according to Maxwell's electromagnetic theory, the speed of light is
>constant no matter where the observer."
>
>Regretfully, this is rather typical and (although he noticed this one)
>Pentcho doesn't manage to "repair" the information in his head. How
>many people find their way through the mixture of correct information,
>misleading information, sneaky omissions and outright lies?

The competent ones figure it out, the incompetent ones either give
up physics and pursue less mathematically taxing subjects, or become
cranks.

In my experience, nobody has *ever* become a crank because of the way
material was presented to them. You have to have the crank personality
to become a crank.

>> >but in fact they are dished up a mix of their
>> >ideas with the ideas of anonymous others.
>>
>> That's what science is about. It's a cumulative, ongoing effort to
>> understand the world. Many people make contributions towards that
>> understanding. The scientist who invents something completely new
>> out of whole cloth is the exception.
>
>Yes - the crime is mostly the careful omission of key information: not
>telling "the whole truth", as emphasized in court.

Education is *always* a matter of selecting some information to
include, and some information to leave out. There is only so much
time to go over material, and if you tried to include everything
that every physicist ever believed, that would be an overwhelming,
incoherent mass of information. Selection of material based on
relevance is critically important.

Maybe you think that there are beliefs of Newton's that are
important that are being left out, but that's a matter of opinion.
Yes, you could certainly include many other topics, but the subjects
of classical mechanics, electromagnetism, quantum mechanics,
special relativity, general relativity are coherent well-understood
topics as they are currently taught.

>> I think you have a mistaken view of science. The important thing
>> about science is *not* the words of great scientists.
>
>We agree on that; reporting the ideas of the inventors of theories in
>order to allow the students to fairly compare those with the ideas of
>others, DOES matter.

It depends on what your goal is. When a student is taught a subject
such as calculus or classical physics, there are certain concepts,
tools, techniques, etc. that need to be understood and mastered in
order to solve problems in the field. This sort of information is
not adequate to allow the student to competently explore the
foundations of these subjects and to develop alternative foundations.
The assumption is that there are very, very few people who will ever
be in a position to do that kind of shaking up of the establishment.

Kuhn described how, in his opinion, science progresses. Most of the
time, the progress in science is incremental, rather than revolutionary.
Certain foundations are assumed to be correct, and scientists work on
the edges, trying to bring incrementally more phenomena into the category
of "well understood". But very occasionally, mainstream science gets
itself into a dead end. The incremental approach seems to be making
no progress at all, or else the progress is at the cost of making
the theory ever more convoluted. At that point, somebody comes along
with a brand new idea that calls for tossing out huge chunks of existing
science and replacing it by something new.

But revolutions are rare, and it's good that they are, because otherwise
there would be no notion of scientific knowledge at all. The revolutions
since Newton have all been of the form that the new theory reduces to the
previous theory in some limit, so the old knowledge does not become useless,
but instead is understood to have just a limited, approximate applicability.

Anyway, I suppose that you could say that we are negligent in training
our revolutionaries, but I really don't think that the detailed arguments
of past scientists are likely to be all that useful in preparing one for
the next great revolution. It's certainly possible, but it seems to me
more likely that the new ideas will be ones that would not likely to have
occurred to earlier scientists.

>And later they can't say that they have been f*cked with.

I doubt whether most cranks could ever have been coaxed into
being productive scientists by the right pedagogy.

>> It is the structure of the scientific theories and the experimental
>> support for those theories.
>
>Yes indeed. Now, if we ask for a presentation of those theories, who
>makes a selection of the experimental support, and for whose theories?
>For example, did you know from a textbook discussion why Newton's
>bucket experiment is decisive for his theory of motion? Apparently
>not.

>> My confidence in Newtonian physics or relativity had nothing to
>> do with belief in any scientist's "capacities". It was from understanding
>> the material, and seeing how it "fit together", how it answered questions
>> about how the world works, how it is supported by evidence.
>
>That's a false confidence: in fact you *reject* Newtonian physics at
>its basis, although it partly answers how the world works and it is
>supported by his bucket experiment. How many textbooks discuss it?

How does the bucket experiment contradict what's currently taught
as "classical mechanics"? It doesn't.

I think you are mixing up science and philosophy. The science as it
is currently taught is perfectly adequate to figure out what happens
when you rotate a bucket of water. If you want to know, at some deep,
satisfying level, *why* the bucket behaves that way, science doesn't
actually answer "why" questions, except to explain phenomena in terms
of more basic phenomena.

>> I don't know, but you seem to have a similar wrong view that science
>> is about indoctrination.
>
>Indoctrination is the enemy of science - and a dangerous one.

>> >You greatly underestimate the role that indoctrination plays in human
>> >teaching.
>>
>> It's a substitute for understanding.
>
>Exactly. Do you find indoctrination acceptable in scientific
>education?

I don't think indoctrination is a good description of what is
going on.

>> This is getting tedious. If you have an argument in favor of
>> an absolute standard of rest, then *you* present it.
>
>I have few other arguments than the ones that you can read from
>Newton,

Newton doesn't give such an argument. His argument is perfectly
consistent with the nonexistence of an absolute frame of rest.
His arguments show that one can perform an experiment to determine
whether one is moving inertially, but not to determine whether one
is moving at all.

>Langevin (SRT), Hardy (QM), etc. What's the use to add my own
>ones, if you can't understand their examples which are not very
>different from mine?

Newton's argument doesn't actually work. I've read many discussions
about QM and locality, and there is no compelling reason to think
that QM demands an absolute standard of rest. I haven't read the
argument given by Langevin, but I already know that the twin paradox
doesn't imply a standard of rest, because there is a model in which
there is no standard of rest, which nevertheless correctly predicts
the results of the twin experiment. There could certainly be some
other evidence for the existence of a preferred rest frame, but
the twin paradox *PROVABLY* does not imply such a thing.


>> Don't send
>> me on wild goose chases through history. You misled me with your
>> references on Newton. You claimed that Newton argued in favor of
>> an absolute standard of rest, and then when I actually looked at
>> what Newton wrote, I saw that he made no such argument.
>
>He called it "absolute space" and argued for it from the bucket
>experiment, in the "Scholium" that I referred you to;

He gives no basis for saying that there is an absolute standard
of rest.

>there is no real substitute for pondering over his arguments yourself.

I have looked at what he said, and I see nothing there that suggests
that there is an absolute standard of rest. If you think that his
arguments *do* imply the existence of an absolute standard of rest,
then tell me why.

>> There's a mismatch of argument styles here. You make claims,
>> and you decline to argue in favor of them. I find that frustrating.
>
>I prefer to give factual statements and if asked, provide quality
>references for information; arguing about such things is mostly just a
>waste of time and effort.

Well, it seems to me that you spend an enormous amount of time
and effort arguing about things, anyway, but in a way that never
makes it clear what point you are making, what you believe, and why.
The kind of roundabout discussions that you seem to prefer can take
literally years without ever seeming to progress past the fuzzy stage.

What I would prefer is to lay things out in a logical form:
Assuming A, B, and C, we can conclude D. Then that gives focus
to any followup discussion: Someone can ask for more details about
why D follows from A, B, and C. Or someone can ask what reason there
is for assuming A, B, or C.

>> You justify your style by saying that others have already made the
>> arguments much better than you. But I can't have a discussion with
>> people who are dead. I can't ask them what they meant. I can't
>> propose counter-arguments to see how they respond. So I'm not going
>> to argue with people long dead.
>
>Reading their arguments and comparing them with those of others is
>good enough for me; and how much do you argue with your textbooks?

I don't. I don't care about textbooks. I have a current understanding
of certain subjects: classical physics, electromagnetism, etc., and
I try to be open to criticisms pointing out that my understanding is
weak. Whatever textbooks I may have read in the past are just as "dead"
to me as Newton or Maxwell.

--
Daryl McCullough
Ithaca, NY

From: PD on
On Jul 11, 8:47 pm, kenseto <kens...(a)erinet.com> wrote:

>
>  So you are saying that the speed of light in the preferred frame is
> isotropic and experiments show that the speed of light is isotropic
> and this is evidence that the preferred frame does not exit?? You are
> the stupidest physics professor on the earth.
>
> Ken Seto

No, Ken. What is true is that we've measured the isotropy of the speed
of light in more than one reference frame. Since the preferred
reference frame would be unique BY DEFINITION, then these frames
cannot be the preferred reference frame. Since isotropy in a preferred
frame would lead to anisotropy in other frames, the found isotropy in
the other frames shows that there is no preferred frame with isotropy.

It's simple. I don't know why you can't get it. Oh, I know. It's
because you're stupid, isn't it?

PD
From: colp on
On Jul 13, 2:24 am, PD <thedraperfam...(a)gmail.com> wrote:
> On Jul 11, 3:51 pm, colp <c...(a)solder.ath.cx> wrote:
>
>
>
> > On Jul 12, 8:31 am, PD <thedraperfam...(a)gmail.com> wrote:
>
> > > On Jul 10, 9:15 pm, colp <c...(a)solder.ath.cx> wrote:
>
> > > > On Jul 11, 1:05 pm, Paul Stowe <theaether...(a)gmail.com> wrote:
>
> > > > > On Jul 10, 5:47 pm, colp <c...(a)solder.ath.cx> wrote:
>
> > > > > > On Jul 11, 10:49 am, eric gisse <jowr.pi.nos...(a)gmail.com> wrote:
>
> > > > > > > colp wrote:
>
> > > > > > > [...]
>
> > > > > > > Discussion with you is pointless. Go away.
>
> > > > > > The point of discussion is to show the error in the contention that
> > > > > > Einstein's first postulate of SR is true.
>
> > > > > > The first postulate isn't true because of the paradoxes which arise
> > > > > > when it is applied within the context of real relativistic effects
> > > > > > like time dilation.
>
> > > > > What, very specifically is your beef with the 'principle of
> > > > > relativity'?
>
> > > > The fact that it purports that there are no absolutes in nature.
>
> > > It says nothing of the kind. There is absolute zero in temperature,
> > > for example.
>
> > If a group of atoms are not moving relative to each other, but are
> > moving relative to the preferred frame, then they have an effective
> > temperature greater than absolute zero due to their kinetic energy. If
> > there is no preferred frame then a gas is at absolute zero only for a
> > local observer.
>
> And that is absolutely NOT correct. Temperature is associated with
> *stochastic* motion, not linear motion.

No, stochastic motion is not an essential element of temperature.

Definition: Temperature is a measurement of the average kinetic energy
of the molecules in an object or system and can be measured with a
thermometer or a calorimeter. It is a means of determining the
internal energy contained within the system.

http://physics.about.com/od/glossary/g/temperature.htm

> Throwing a rock at 10,000
> miles/hour through space does not increase its temperature one whit.

Straw man.

The temperature of a rock cannot be measured without it interacting
with something. If the rock is moving relative to what it is
interacting with then it has a greater effecting temperature than if
the two had no relative velocity.

>
> It would help if you learned a little basic physics before launching
> yourself into rationales against relativity.

It would help if you acknowledged you errors and didn't maintain an
air or pretentiousness.

>
>
>
> > > Curvature is not relative.
>
> > Geometry is not physics.
>
> I beg to differ. The geometric structure of a lot of things IS
> physics.

Straw man.

Geometry is an abstract descriptive tool. The geometry of _things_ is
as aspect of the physical universe.
From: colp on
On Jul 12, 3:59 pm, eric gisse <jowr.pi.nos...(a)gmail.com> wrote:
> colp wrote:
> > On Jul 12, 12:42 pm, eric gisse <jowr.pi.nos...(a)gmail.com> wrote:
> >> colp wrote:
>
> >> [...]
>
> >> > Historically that hasn't been the case. Relativity was adopted because
> >> > it filled a philosophical niche, not because of it's value as a
> >> > predictive tool.
>
> >> I admire your kind of lying, because it takes balls to say with absolute
> >> certainty the factual equivalent of saying 'the sky is green'.
>
> > I'm not lying.
>
> Then you are so abundantly stupid that you should never speak on a technical
> subject ever again.
>
> > The early experiments didn't verify Einstein's
> > theories, but were made to look at though they did.
>
> Lying again. Or stupid, as mentioned above.
>
> Gravitational lensing is well established observational fact.
>
>
>
> > Re: Mercury's perihelion advance:
>
> I see no particular point into launching into a long discussion with you
> about yet another subject you do not understand.

I understand that you have no answer to the evidence of academic fraud
which is the theory of relativity.

Pari notes these comments by Einstein's friends and contemporaries
regarding the perihelion equation:
Max von Laue (close friend of Einstein):

"The agreement between two individual numbers (the perihelion
prediction of Einstein and Newcomb anomaly) achieved under conditions
which cannot be arbitrarily altered, so that it seems uncertain
whether the suppositions (specifically the assumption of two mass
points) are fulfilled with sufficient accuracy, does not seem to be
sufficient reason, even though it is note-worthy, to change the whole
physical conception of the world to the full extent as Einstein did
with this theory."

Jean Francois Chazy (noted French mathematician);

(Translation) "In all fairness, at the present status of science,
the value of the advance of Mercury's perihelion as an argument for
the theory of Relativity does not, could not have the definitive
character that some people believe it to have."

> Mercury's perihelion
> advance is observational fact, and has been as such for more than 150 years.

Yes, but the issue is of how observations of that advance did not
support Einstein's theory.