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Natural Science Forum / Physics / Particle Physics / May 2007



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quantum mechanics is a farce

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Dale Kelly - 01 May 2007 10:48 GMT
the uncertainty principle says that you cannot empirically know the
location and momentum of nature in the particle realm for certain

many unethical scientists have equated uncertainty with randomness and
propagated an uncorrect philosophy called quantum mechanics

if you are uncertain, this is NOT random, in fact it means that you
CANNOT even know if the population of particles is random, a random
population is determinate and has statistical properties

all nature in the particle realm, ALWAYS, results in the cause and effect
models we see in the classical realm, in fact, ALL, interpretations of
quantum mechanics reduce supposed particle behavior to classical behavior

Signature

Dale
http://www.vedantasite.org

GSS - 01 May 2007 13:31 GMT
> the uncertainty principle says that you cannot empirically know the
> location and momentum of nature in the particle realm for certain.
[quoted text clipped - 12 lines]
> --
> Dalehttp://www.vedantasite.org

In my opinion, the most funny thing with QM is that you are not
permitted even to imagine an electron at rest!!

That is because of the uncertainty principle. If the uncertainty in
the location of an electron is reduced to zero (when at rest) then the
uncertainty principle will make the uncertainty in its momentum to be
infinity. Hence the electron cannot be at rest!!!

GSS
Sir Frederick - 01 May 2007 13:59 GMT
>> the uncertainty principle says that you cannot empirically know the
>> location and momentum of nature in the particle realm for certain.
[quoted text clipped - 22 lines]
>
>GSS

Apparently both human conceptual models of wave and particle
are only human conceptual models. What is actually manifesting
to us in such as an "electron", is very limited by us.  Analogous
to the limited perceptions of a Flatland denizen as a higher dimensional  
sphere passes through.
Vlad the accountant - 01 May 2007 14:02 GMT
> > the uncertainty principle says that you cannot empirically know the
> > location and momentum of nature in the particle realm for certain.
[quoted text clipped - 24 lines]
>
> - Show quoted text -

how can you be certain

Mummy my head hurts
Vlad the accountant - 01 May 2007 14:03 GMT
> > the uncertainty principle says that you cannot empirically know the
> > location and momentum of nature in the particle realm for certain.
[quoted text clipped - 24 lines]
>
> - Show quoted text -

how can you be certain

Mummy my head hurts
PD - 01 May 2007 18:21 GMT
> > the uncertainty principle says that you cannot empirically know the
> > location and momentum of nature in the particle realm for certain.
[quoted text clipped - 15 lines]
> In my opinion, the most funny thing with QM is that you are not
> permitted even to imagine an electron at rest!!

Actually, you can imagine it. It just won't have any bearing on
reality.

> That is because of the uncertainty principle. If the uncertainty in
> the location of an electron is reduced to zero (when at rest) then the
[quoted text clipped - 4 lines]
>
> - Show quoted text -
GSS - 02 May 2007 08:04 GMT
....
> > In my opinion, the most funny thing with QM is that you are not
> > permitted even to imagine an electron at rest!!
>
> Actually, you can imagine it. It just won't have any bearing on
> reality.

Well, thanks if you permit me to imagine an electron at rest!
It implies that I am also permitted to define the position of an
electron at rest.

Let me try.

Let us consider an inertial reference frame K with Cartesian
coordinate system XYZ, defined to be at rest in the International
Celestial Reference Frame (ICRF).  Let us define the position of an
electron to be X1, Y1, Z1 at an instant of time t1. Now to ensure that
this electron is at rest at this location, we further define the
location of this electron to be X1, Y1, Z1 at some subsequent instants
of time t2, t3, and t4 such that t4>t3>t2>t1.

The above definition of the location of the electron in the inertial
reference frame K, ensures that the electron is at rest  at point X1,
Y1, Z1 and its momentum is zero in this reference frame. That is the
uncertainties in the position and momentum of this electron are both
zero which violates the principle of uncertainty.

Well, your permission to define an electron at rest in certain
inertial reference frame implies your permission to violate the
principle of uncertainty.

Is it really permitted in QM?

I think it would have been more logical if the uncertainty principle
were to be applicable only for actual measurements and not for
theoretical considerations.

GSS

> > That is because of the uncertainty principle. If the uncertainty in
> > the location of an electron is reduced to zero (when at rest) then the
[quoted text clipped - 4 lines]
>
> > - Show quoted text -
PD - 02 May 2007 14:42 GMT
> ....
> > > In my opinion, the most funny thing with QM is that you are not
[quoted text clipped - 28 lines]
>
> Is it really permitted in QM?

As I said, what you choose to *define* is up to you. Whether it has
any bearing on reality is another matter.

The reality is that you will be physically unable to create an
electron state that has the characteristics you describe above. The
reason why you will be unable to do so is that the physical laws that
electrons behave will not allow it, and the uncertainty principle is
an observation of that fact.

*Imagining* that you create such an electron state in no way assures
that nature will respect your imagining. In this event, you might as
well be applying the same definition to a little pink pixie, because
the "electron" you are defining that way has the same level of
reality.

"Theoretical considerations" does NOT mean "what I can imagine". A
theory is intended to describe reality and to be consistent with
observations. If "what I can imagine" immediately violates
observations, then what I am performing is in no way a "theoretical
consideration". Fundamental error in terminology, as well as incorrect
scientific thinking.

PD

> I think it would have been more logical if the uncertainty principle
> were to be applicable only for actual measurements and not for
> theoretical considerations.
GSS - 02 May 2007 15:44 GMT
> > ....
> > > > In my opinion, the most funny thing with QM is that you are not
[quoted text clipped - 56 lines]
> > were to be applicable only for actual measurements and not for
> > theoretical considerations.

Imagination is an indispensable tool for getting any glimpse of
reality. Imagination is required even for interpreting the
observations. Any mathematical model that claims to model physical
reality, cannot serve its purpose if it defies imagination!!

Let us make it simpler,  can you imagine an electron at rest in your
local coordinate system? If you can, kindly give a small description
of it. If not kindly give reason for your inability.

GSS
PD - 02 May 2007 16:27 GMT
> > > ....
> > > > > In my opinion, the most funny thing with QM is that you are not
[quoted text clipped - 61 lines]
> observations. Any mathematical model that claims to model physical
> reality, cannot serve its purpose if it defies imagination!!

Well, that's true. However, one has to become practiced at training
the imagination to become more open-minded, especially if informed by
experiment that imagination's constraints are unwarranted. Some people
are better at this than others. :>)

> Let us make it simpler,  can you imagine an electron at rest in your
> local coordinate system? If you can, kindly give a small description
> of it. If not kindly give reason for your inability.

I can certain imagine *something* being at rest in my local coordinate
system, but I'm also aware that this "something" is little more than a
little pink pixie. This is because I'm made aware, through experiment,
that nothing real is at rest at a precisely known position in my local
coordinate system. I'm further made aware that this fact has nothing
to do with limitations of experiment, but is in fact due to the nature
of real objects and the natural laws by which they behave. This is
true for my coffee cup, it is true for the "T" key on my keyboard, it
is true for any electron I choose in my local coordinate system. The
moment I "imagine" something that defies those natural laws, then of
course I am not imagining anything real.

You seem to be under the apprehension that anything that is imaginable
and sensible in the mind must be allowable and supported by the laws
of physics. This is certainly not the case. The mind is a liar and a
cheat when it comes to what is *actually* allowable by the laws of
nature. The payoff is that what nature *actually* allows is a whole
lot more interesting that what our minds would allow -- and this is
precisely the attraction of science.

PD
GSS - 03 May 2007 13:36 GMT
......
>> Imagination is an indispensable tool for getting any glimpse of
>> reality. Imagination is required even for interpreting the
[quoted text clipped - 31 lines]
>
> PD

Agreed that whatever we can imagine may not correspond to physical
reality. But whatever belongs to physical reality can be mentally
visualized provided we possess all the relevant information necessary
for simulating that physical reality in the imagination process.
Mental visualization of a dynamic physical process is quite akin to 3-
D animated simulation of that process on the computer screen.
Obviously we need a lots and lots of information for that.

Whenever we fail to imagine or mentally visualize certain entity, it
certainly implies that either our knowledge (information content)
about such entity is lacking or such entity does not belong to
physical reality. For example an electron is certainly a physical
entity and if we fail to mentally visualize the electron at rest, it
simply implies that we do not possess enough information (or
knowledge) about the electron.

Further, regarding the applicability of the uncertainty principle to a
micro particle at rest, there does exist a lot of ambiguity and
controversy. There is a general misinterpretation of uncertainty
principle which implies that *nature* does not permit a micro particle
to be at rest in any coordinate system - and this is attributed to
'complexity of reality'.  Truly speaking the wave function must
collapse for a micro particle at *rest* and hence the uncertainty
principle will be simply *not applicable* for such cases.

Do you agree?

GSS
PD - 03 May 2007 17:00 GMT
> ......
> >> Imagination is an indispensable tool for getting any glimpse of
[quoted text clipped - 37 lines]
> visualized provided we possess all the relevant information necessary
> for simulating that physical reality in the imagination process.

Yes.

> Mental visualization of a dynamic physical process is quite akin to 3-
> D animated simulation of that process on the computer screen.

No. This constraint is probably what's causing you problems. The
*informed* imagination is not so limited. If you are demanding such an
artifact to emerge from your imagination, you are shackling it.

> Obviously we need a lots and lots of information for that.
>
> Whenever we fail to imagine or mentally visualize certain entity, it
> certainly implies that either our knowledge (information content)
> about such entity is lacking or such entity does not belong to
> physical reality.

OK so far. :

> For example an electron is certainly a physical
> entity and if we fail to mentally visualize the electron at rest, it
> simply implies that we do not possess enough information (or
> knowledge) about the electron.

No. Read your first sentence in your previous reply:
"Agreed that whatever we can imagine may not correspond to physical
reality."

> Further, regarding the applicability of the uncertainty principle to a
> micro particle at rest, there does exist a lot of ambiguity and
> controversy.

No. What you are suffering from is what you also said in your second
sentence of your previous post: "But whatever belongs to physical
reality can be mentally visualized provided we possess all the
relevant information necessary for simulating that physical reality in
the imagination process." You are not in possession of all the
relevant information necessary for simulating that physical reality in
the imagination process.

> There is a general misinterpretation of uncertainty
> principle which implies that *nature* does not permit a micro particle
> to be at rest in any coordinate system - and this is attributed to
> 'complexity of reality'.  

That is not a misinterpretation.

> Truly speaking the wave function must
> collapse for a micro particle at *rest*

That is not correct. Again, you appear to be suffering from a lack of
sufficient relevant information necessary for simulating that physical
reality in your imagination process.

> and hence the uncertainty
> principle will be simply *not applicable* for such cases.
>
> Do you agree?

I hope I've made it clear where I agree and disagree. At times it
appears you do not agree with yourself.

PD
GSS - 04 May 2007 06:31 GMT
......
>> Agreed that whatever we can imagine may not correspond to physical
>> reality. But whatever belongs to physical reality can be mentally
[quoted text clipped - 9 lines]
> *informed* imagination is not so limited. If you are demanding such an
> artifact to emerge from your imagination, you are shackling it.

OK. I think we need to differentiate between mental visualization and
imagination. I have been using the term imagination in the sense of
mental visualization of a physical entity or process.

>> Obviously we need a lots and lots of information for that.
>
[quoted text clipped - 13 lines]
> "Agreed that whatever we can imagine may not correspond to physical
> reality."
"But whatever belongs to physical reality can be mentally visualized
provided we possess all the relevant information necessary for
simulating that physical reality in the imagination process." And we
know that an electron is certainly a physical entity. Hence if we fail
to mentally visualize the electron at rest; it simply implies that we
do not possess enough information (or knowledge) about the electron.

>> Further, regarding the applicability of the uncertainty principle to a
>> micro particle at rest, there does exist a lot of ambiguity and
[quoted text clipped - 7 lines]
> relevant information necessary for simulating that physical reality in
> the imagination process.

Agreed that 'we' do not possess sufficient information about the
shape, size, structure, energy distribution, wave characteristics etc.
of the electron. But 'we' do possess all relevant information
regarding the *uncertainty principle*. So we can discuss the
correlation or applicability of the uncertainty principle to the
physical reality. (see below)

>> There is a general misinterpretation of uncertainty
>> principle which implies that *nature* does not permit a micro particle
[quoted text clipped - 19 lines]
>
> PD

Uncertainty Principle
---------------------

The uncertainty principle states that when measuring conjugate
quantities, the product of their standard deviations must be at least
h/4pi. Here conjugate quantities imply a pair of variables
mathematically defined in such a way that they become Fourier
transform duals of one-another.

 Fundamentally, the uncertainty principle is based on the wave-
particle duality.

As per de Broglie's hypothesis, all microscopic particles of matter
display a wave-like nature while in motion. The de Broglie relations
show that the wavelength L is inversely proportional to the momentum p
of a particle (L=h/p) and that the frequency f is directly
proportional to the particle's kinetic energy (f=E/h). What it implies
is that the dynamic characteristics of a micro particle can be
ascribed to the wave characteristics of a pilot wavelet accompanying
the micro particle in motion.

Logically, the intensity of the pilot wavelet accompanying the micro
particle in motion is expected to be large in magnitude in the
immediate vicinity of the micro particle and small elsewhere. However,
as per Quantum Mechanics(QM), the intensity of the pilot wavelet is
interpreted as the position probability density for the location of
the micro particle.  That is, in QM the location of the center of the
micro particle in motion is assumed to be 'smeared across' the whole
wavelet as a position probability density. The wavelet accompanying
the micro particle in motion is described  with a wave function
Psi(r,t) such that the position probability density P(r,t) is given
by,

                        P(r,t) = |Psi(r,t)|
^2

By associating the intensity of the pilot wavelet with the position
probability density of the micro particle it becomes convenient to
normalize the wave function Psi(r,t). If on the other hand the
intensity of the pilot wavelet was associated with the kinetic energy
density of the micro particle in motion, the ensuing mathematics would
have become extremely cumbersome. However, by interpreting the
intensity of the pilot wavelet as the position probability density of
the micro particle and normalizing the wave function accordingly, the
QM has effectively been transformed into Statistical Quantum
Mechanics.

This *assumption* of interpreting the intensity of the pilot wavelet
as the position probability density for the location of the micro
particle is precisely the *point of departure* of QM from the physical
reality.

The existence of the position probability density P(r,t) makes it
possible to calculate the expectation value of the position vector of
the micro particle in motion.  The expectation value is the
mathematical expectation (or mean) in the sense of probability
theory.  The expectation values of the position vector r and the
momentum vector p can be written as,
        <r> = Integral[r P(r,t) dv]
and      <p> = Integral[p P(r,t) dv]

The uncertainty in the expectation value of x component of position
vector r is denoted by delta.x or just dx and is defined to be the
root-mean-square deviation from the mean or expectation value of x.
Similarly the  uncertainty in the expectation value of p is denoted by
dp and is defined to be the root-mean-square deviation from the mean
or expectation value of p.

(dx)^2  =  <(x-<x>)^2>  = <x^2>  - <x>^2
(dp)^2  =  <(p-<p>)^2>  = <p^2>  - <p>^2

The product of these uncertainties can be shown to yield the famous
uncertainty relation,

dx.dp >=  h/4pi

Hence it may be summarized that the famous uncertainty principle is
founded on the following assumptions, some of which may not remain
valid under all circumstances.

(a)As per de Broglie's hypothesis all micro particles in motion are
accompanied by some sort of pilot wavelet whose wave parameters are
governed by the kinetic energy and momentum of the micro particle.

(b)The intensity of the pilot wavelet is interpreted as the position
probability density for the location of the micro particle in motion.

(c)The uncertainty dx or dp in the expectation values of x or p is
defined to be the root-mean-square deviation from the mean or
expectation values of x or p.

Let us now examine a situation where at least one of the above
assumptions is not valid. For this let us consider the micro particle
under question to be at rest.  If the micro particle is not in motion,
its momentum and kinetic energy will be zero and obviously therefore,
there will be no pilot wavelet accompanying this particle. Hence
assumption (a) is no longer valid for a micro particle at rest.
Logically therefore, the uncertainty relations will not be applicable
for any micro particle at rest, for which the associated wave function
can be considered as collapsed.

GSS
PD - 04 May 2007 13:25 GMT
> ......
> >> Agreed that whatever we can imagine may not correspond to physical
[quoted text clipped - 14 lines]
> imagination. I have been using the term imagination in the sense of
> mental visualization of a physical entity or process.

Then again, if you are expecting a little 3D movie where everything
looks like it does in the macroscopic world, with edges and shape and
volume and definite paths, then you are shackling the imagination.

There is NO requirement that the entire universe looks and plays in a
movie like it does in the tiny little corner of the universe that our
senses are tuned to. In fact, it certainly appears that the universe
is much richer and much more interesting than the little parochial
corner we have become accustomed to.

I know that you have enjoyed pointing little round pegs into little
round holes, but there really is no sense in trying to pound square
pegs and star-shaped pegs and things that aren't pegs at all into the
little round holes you're used to dealing with.

> >> Obviously we need a lots and lots of information for that.
>
[quoted text clipped - 20 lines]
> to mentally visualize the electron at rest; it simply implies that we
> do not possess enough information (or knowledge) about the electron.

No, the electron at rest, despite appearing in your imagination, does
not correspond to physical reality.

> >> Further, regarding the applicability of the uncertainty principle to a
> >> micro particle at rest, there does exist a lot of ambiguity and
[quoted text clipped - 12 lines]
> of the electron. But 'we' do possess all relevant information
> regarding the *uncertainty principle*.

Some people do. You however seem to be somewhat limited in your
information about it. And this has hampered your ability for
simulating its physical reality in your imagination process.

> So we can discuss the
> correlation or applicability of the uncertainty principle to the
[quoted text clipped - 44 lines]
> ascribed to the wave characteristics of a pilot wavelet accompanying
> the micro particle in motion.

What pilot wavelet? It appears your information about quantum
mechanics and the uncertainty principle is too limited to fully
simulate its physical reality in your imagination process.

There is no pilot wavelet suggested or required.

> Logically, the intensity of the pilot wavelet accompanying the micro
> particle in motion is expected to be large in magnitude in the
[quoted text clipped - 83 lines]
>
> - Show quoted text -
GSS - 05 May 2007 06:17 GMT
>> ......
>>>> Whenever we fail to imagine or mentally visualize certain entity, it
[quoted text clipped - 22 lines]
> No, the electron at rest, despite appearing in your imagination, does
> not correspond to physical reality.

I am reminded of Tom Robert's pet remark, "What God whispered that in
your ears?"

>>>> Further, regarding the applicability of the uncertainty principle to a
>>>> micro particle at rest, there does exist a lot of ambiguity and
[quoted text clipped - 27 lines]
>
>>> That is not a misinterpretation.

  Yes it is, as shown below.

>>>> Truly speaking the wave function must
>>>> collapse for a micro particle at *rest*
[quoted text clipped - 15 lines]
>> Uncertainty Principle
>> ---------------------
....
>> As per de Broglie's hypothesis, all microscopic particles of matter
>> display a wave-like nature while in motion. The de Broglie relations
[quoted text clipped - 10 lines]
>
> There is no pilot wavelet suggested or required.

It appears that you are trying to find some lame pretexts to wriggle
out of these discussions.

Generally the term wave is used for a continuous unbounded wave and
the term wavelet can be used to indicate a finite wave contained
within a bounded volume of space at any given instant of time. The
term 'pilot' is used just to stress that the said wave is
'accompanying' the associated particle. If you feel more comfortable,
you may replace the term 'pilot wavelet' with just 'wave' in the
following write up and then give your comments.

>> Logically, the intensity of the pilot wavelet accompanying the micro
>> particle in motion is expected to be large in magnitude in the
[quoted text clipped - 25 lines]
>> particle is precisely the *point of departure* of QM from the physical
>> reality.

 I want you to specifically comment on the preceding assertion with
detailed justification for your point of view.

>>  The existence of the position probability density P(r,t) makes it
>> possible to calculate the expectation value of the position vector of
[quoted text clipped - 41 lines]
>> there will be no pilot wavelet accompanying this particle. Hence
>> assumption (a) is no longer valid for a micro particle at rest.

Your specific comments are again required over here to either agree or
disagree with the association of a wave with a micro particle at rest
as per the de Broglie's hypothesis.

>> Logically therefore, the uncertainty relations will not be applicable
>> for any micro particle at rest, for which the associated wave function
>> can be considered as collapsed.

 GSS
PD - 05 May 2007 16:21 GMT
> >> ......
> >>>> Whenever we fail to imagine or mentally visualize certain entity, it
[quoted text clipped - 25 lines]
>  I am reminded of Tom Robert's pet remark, "What God whispered that in
> your ears?"

Experiment. That is the usual decider of these issues, but it seems to
be something you're willing to dispense with.
You've already acknowledged that not everything that exists in your
imagination corresponds to physical reality. You've furthermore been
unwilling to let experiment serve as the arbiter to which of those
things in your imagination do and do not correspond to physical
reality. All you are left with to make that decision, then, is your
desire and your will. This, however, is no longer science, but faith.

> >>>> Further, regarding the applicability of the uncertainty principle to a
> >>>> micro particle at rest, there does exist a lot of ambiguity and
[quoted text clipped - 75 lines]
> you may replace the term 'pilot wavelet' with just 'wave' in the
> following write up and then give your comments.

No, I know to what you are referring. Pilot waves have a very
particular meaning, especially to those who coined the term. Bohmian
mechanics, which are NOT the standard framework of quantum mechanics,
have specific and well-defined experimental predictions, which have
been tested and ruled out. There is no pilot wave suggested or
required by the uncertainty principle.

Your attempt to smudge the distinction between Bohmian mechanics and
quantum mechanics by saying "pilot wave, wave, what's the difference?"
simply reveals that you are not fully conversant in either. As I
mentioned, you appear to be suffering from a lack of sufficient
relevant information necessary for simulating that physical reality in
your imagination process.

> >> Logically, the intensity of the pilot wavelet accompanying the micro
> >> particle in motion is expected to be large in magnitude in the
[quoted text clipped - 84 lines]
>
>   GSS
galathaea - 05 May 2007 18:09 GMT
> Pilot waves have a very
> particular meaning, especially to those who coined the term. Bohmian
[quoted text clipped - 9 lines]
> relevant information necessary for simulating that physical reality in
> your imagination process.

this is incorrect

there has been no experimental distinctions
 between bohmian mechanics and other _interpretations_ of quantum
mechanics

all predictions are isomorphic

although many have extended the bohmian formalism
 in attempts to stimulate new physical theories
standard vanilla out-of-the-box bohmian mechanics
gives exactly the same predictions as other interpretations

 including bell's and leggett's inequalities
 and the experiments of aspect and others

the question has always been how one interprets the data
 before debroglie and later bohm
   it was incorrectly believed it was impossible to give a particle
ontology
 to quantum mechanical predictions

since that time
 these misunderstandings have continued in a number of research
communities
but foundationalists have moved on to different concerns
studying the assumptions in von-neumann's no-go
and the related derivations that show
 constraints in the ontology of classical and quantum mechanics

they are studying
 contextuality
 compositionality
 locality
 contrafactuality
 ontological reality
 univalent temporality
and other properties who collectively define the interpretations

but the isomorphic predictions of the bohmian interpretation
 is a simple mathematical theorem

and though there have been attempts
 no one has shown any flaws in it yet
precisely because it is so simple
( only a handful of lines to show the polar decomposition gives a
louiville flow )

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
galathaea: prankster, fablist, magician, liar
GSS - 06 May 2007 09:24 GMT
.....
>>>>>> There is a general misinterpretation of uncertainty
>>>>>> principle which implies that *nature* does not permit a micro particle
[quoted text clipped - 4 lines]
>
>>    Yes it is, as shown below.

.....
>>>> As per de Broglie's hypothesis, all microscopic particles of matter
>>>> display a wave-like nature while in motion. The de Broglie relations
[quoted text clipped - 35 lines]
> relevant information necessary for simulating that physical reality in
> your imagination process.

 Again you are sidetracking the issue. Well, frankly speaking I was
not aware of the Bohmian Mechanics till I read your response. Now look
at your above remark, "No, I know to what you are referring". See, how
biased you get sometime, just out of ignorance!!

Today I had a glance at the 'Bohmian Mechanics' and I do find that it
appears to have a more sensible formalism. But let us not sidetrack
our discussion into Bohmian mechanics. Therefore, I am reproducing the
original write up on uncertainty principle with the words 'pilot
wavelet' replaced with just 'wave'. I hope now you will be in a
position to read and respond to it.

Uncertainty Principle
---------------------

As per de Broglie's hypothesis, all microscopic particles of matter
display a wave-like nature while in motion. The de Broglie relations
show that the wavelength L is inversely proportional to the momentum p
of a particle (L=h/p) and that the frequency f is directly
proportional to the particle's kinetic energy (f=E/h). What it implies
is that the dynamic characteristics of a micro particle can be
ascribed to the wave characteristics of a wave accompanying the micro
particle in motion.

Logically, the intensity of the wave accompanying the micro particle
in motion is expected to be large in magnitude in the immediate
vicinity of the micro particle and small elsewhere. However, as per
Quantum Mechanics(QM), the intensity of the pilot wavelet is
interpreted as the position probability density for the location of
the micro particle.  That is, in QM the location of the center of the
micro particle in motion is assumed to be 'smeared across' the whole
wave as a position probability density. The wave accompanying the
micro particle in motion is described  with a wave function Psi(r,t)
such that the position probability density P(r,t) is given by,

                        P(r,t) = |Psi(r,t)|
^2

By associating the intensity of the wave with the position probability
density of the micro particle it becomes convenient to normalize the
wave function Psi(r,t). If on the other hand the intensity of the wave
was associated with the kinetic energy density of the micro particle
in motion, the ensuing mathematics would have become extremely
cumbersome. However, by interpreting the intensity of the wave as the
position probability density of the micro particle and normalizing the
wave function accordingly, the QM has effectively been transformed
into Statistical Quantum Mechanics.

This *assumption* of interpreting the intensity of the wave as the
position probability density for the location of the micro particle is
precisely the *point of departure* of QM from the physical reality.

The existence of the position probability density P(r,t) makes it
possible to calculate the expectation value of the position vector of
the micro particle in motion.  The expectation value is the
mathematical expectation (or mean) in the sense of probability
theory.  The expectation values of the position vector r and the
momentum vector p can be written as,
        <r> = Integral[r P(r,t) dv]
and      <p> = Integral[p P(r,t) dv]

The uncertainty in the expectation value of x component of position
vector r is denoted by delta.x or just dx and is defined to be the
root-mean-square deviation from the mean or expectation value of x.
Similarly the  uncertainty in the expectation value of p is denoted by
dp and is defined to be the root-mean-square deviation from the mean
or expectation value of p.

(dx)^2  =  <(x-<x>)^2>  = <x^2>  - <x>^2
(dp)^2  =  <(p-<p>)^2>  = <p^2>  - <p>^2

The product of these uncertainties can be shown to yield the famous
uncertainty relation,

dx.dp >=  h/4pi

Hence it may be summarized that the famous uncertainty principle is
founded on the following assumptions, some of which may not remain
valid under all circumstances.

(a)As per de Broglie's hypothesis all micro particles in motion are
accompanied by some sort of wave whose parameters are governed by the
kinetic energy and momentum of the micro particle.

(b)The intensity of the wave is interpreted as the position
probability density for the location of the micro particle in motion.

(c)The uncertainty dx or dp in the expectation values of x or p is
defined to be the root-mean-square deviation from the mean or
expectation values of x or p.

Let us now examine a situation where at least one of the above
assumptions is not valid. For this let us consider the micro particle
under question to be at rest.  If the micro particle is not in motion,
its momentum and kinetic energy will be zero and obviously therefore,
there will be no wave accompanying this particle. (That is because
zero frequency and infinite wavelength implies *no wave*) Hence
assumption (a) is no longer valid for a micro particle at rest.
Logically therefore, the uncertainty relations will not be applicable
for any micro particle at rest, for which the associated wave function
can be considered as collapsed.

GSS
PD - 07 May 2007 22:09 GMT
> .....
> >>>>>> There is a general misinterpretation of uncertainty
[quoted text clipped - 150 lines]
>
> GSS-

Just a few comments:

- Your understanding of particle wavefunctions is dim at best. As a
small example, you seem unaware of the momentum representation of a
wavefunction Psi*(p,t).
- Secondly, you suppose that it is possible to define a particle that
has NO WAVE representation simply by holding it at rest. You seem to
be oblivious to the constraint that *every* particle in quantum
mechanics, regardless of its value of kinetic energy, can be
associated with a wavefunction. If, by your own claim, a kinetic
energy of zero would result in NO WAVE FUNCTION, then this should tell
you right away that no particle can have a kinetic energy of zero and
still have a wave description. That is, you are supposing that "if a
rectangle were to have three sides, then it obviously would
demonstrate that the law that all rectangles have four sides doesn't
apply to it."
- Third, you seem to be unaware of stationary states in quantum
mechanics.
- Fourth, you are under some misapprehension that "wave function
collapse" means the particle has been found at rest and therefore its
wave function has ceased to exist. This is not at all what wave
function collapse means, and in fact an electron's wavefunction can
collapse in a measurement that shows it to have nonzero momentum. If
this makes no sense to you, then I advise you to pick up a decent book
on quantum mechanics and learn what collapse of the wavefunction
really means. I suggest a book by Griffiths.
- It is simply NOT TRUE that the intensity of the wavefunction is
large in magnitude where the microparticle particle is found.

Your phenomenally shallow understanding of the principles of quantum
mechanics leaves me at a loss as to how to respond further.

PD
Sean Carroll - 02 May 2007 18:54 GMT
> Imagination is an indispensable tool for getting any glimpse of
> reality. Imagination is required even for interpreting the
> observations. Any mathematical model that claims to model physical
> reality, cannot serve its purpose if it defies imagination!!

That will be news to almost all physicists, who use mathematical models
every day that feature such concepts as N-dimensional spaces, Feynman
path integrals, de Broglie matter-waves, seas of negative-energy
electrons, collisions that scatter particles backwards in time,
non-Euclidean topological manifolds, abstract symmetries that relate
mathematical 'groups' rather than actual objects, space-time
singularities, gravitational waves, superpositions of multiple
realities, superstrings that create both space-time and matter-energy
out of their vibrations rather than existing within space-time and
consisting of matter-energy, and even the fundamental concept of the
entire quantum world -- the wave function -- all of which are concepts
that cannot be pictured or imagined except through very rough,
inaccurate analogies.

In fact, the whole reason we HAVE mathematics is to allow us to explore
things we CAN'T imagine, through symbolic manipulation according to set
rules that capture the essence of how reality operates without the need
for direct pictures, which are impossible anyway for most topics of any
significant degree of complexity or abstraction. If we could imagine
everything, why would we need abstract symbolic manipulation?

If you believe that human imagination is greater than reality, and can
contain all of it, you are sorely mistaken. In fact, human imagination
is merely a *part* of reality, and not a particularly great part. It is
as impossible to comprehend all of reality within human imagination as
it is to contain our entire galaxy within a small jewelry box -- in
fact, infinitely *more* so.

'Nature is not only queerer than we suppose, it is queerer than we *can*
suppose.' --JBS Haldane

Signature

--Sean
http://spclsd223.livejournal.com/
'People don't bug me until they get teeth.' --Dr Gregory House

Sean Carroll - 02 May 2007 18:34 GMT
>>>In my opinion, the most funny thing with QM is that you are not
>>>permitted even to imagine an electron at rest!!

>>Actually, you can imagine it. It just won't have any bearing on
>>reality.

> Well, thanks if you permit me to imagine an electron at rest!
> It implies that I am also permitted to define the position of an
> electron at rest.

Sure it does, if you use the word 'imagine' in a completely different
way from the way everyone else in the history of the world has used it,
so that it means 'formally define'.

You completely missed the point PD was trying to make. Let's try it
again, more slowly and with stronger emphasis:

'Actually, you *can*. *IMAGINE* it. It just *won't*. Have *any* bearing.
On *REALITY*.'

(Pardon my sardonic tone -- no personal offence, I'm just an a.s.)

Signature

--Sean
http://spclsd223.livejournal.com/
'People don't bug me until they get teeth.' --Dr Gregory House

Craig Franck - 02 May 2007 00:20 GMT
> In my opinion, the most funny thing with QM is that you are not
> permitted even to imagine an electron at rest!!
[quoted text clipped - 3 lines]
> uncertainty principle will make the uncertainty in its momentum to be
> infinity. Hence the electron cannot be at rest!!!

Well, if an electron is a wave function that is potentially
spread out over the entire universe, it would be odd if you
could confine it to an atomic nucleus, much less at one
specific point.

In the pictures of electron orbitals, 90% of the wave function
is spread out over the entire volume of an atom, where it's
bound as a standing wave:

http://en.wikipedia.org/wiki/Wave_function

Another way to look at it is even empty space is a manifold
of events; if you can't get space to stand still, then the
concept of "at complete rest" is simply not defined for the
microstructure of nature.

Signature

Craig Franck
craig.franck@verizon.net
Cortland, NY

footprints in the snow - 01 May 2007 14:28 GMT
> the uncertainty principle says that you cannot empirically know the
> location and momentum of nature in the particle realm for certain
[quoted text clipped - 9 lines]
> models we see in the classical realm, in fact, ALL, interpretations of
> quantum mechanics reduce supposed particle behavior to classical behavior

(Max Tegmark) "Although quantum mechanics is often described as
inherently random and uncertain, the wave function evolves in a
deterministic way. There is nothing random or uncertain about it. The
sticky part is how to connect this wave function with what we observe.
Many legitimate wave functions correspond to counterintuitive
situations, such as a cat being dead and alive at the same time in a
so-called superposition. In the 1920s physicists explained away this
weirdness by postulating that the wave function 'collapsed' into some
definite classical outcome whenever someone made an observation. This
add-on had the virtue of explaining observations, but it turned an
elegant, unitary theory into a kludgy, nonunitary one. The intrinsic
randomness commonly ascribed to quantum mechanics is the result of
this postulate. Over the years many physicists have abandoned this
view in favor of one developed in 1957 by Princeton graduate student
Hugh Everett III. He showed that the collapse postulate is
unnecessary. Unadulterated quantum theory does not, in fact, pose any
contradictions. Although it predicts that one classical reality
gradually splits into superpositions of many such realities, observers
subjectively experience this splitting merely as a slight randomness,
with probabilities in exact agreement with those from the old collapse
postulate." --Parallel Universes, Scientific American

(David Deutsch) "Some [interpretations] are gibberish, like the
Copenhagen interpretation." --Taming The Multiverse, New Scientist

(David Deutsch) ".....it is related to a more general anti-rational
phenomenon that was present in nearly all 20th-century philosophies,
especially logical positivism, and reverberated into other fields.
This was intended to be a retreat from metaphysics, which many
philosophers considered meaningless, but really it was a retreat from
reality and explanation. In physics, it took the form of deciding as a
matter of principle that science is not about discovering how the
world really is, but instead must confine itself to predicting the
outcomes of observations. When quantum mechanics came along it
required a drastic revision of people's conception of the world. Many
physicists responded by denying that physics is about the world at
all, only about what we see.
Logical positivism is a form of solipsism. If you say physics is only
about predicting the outcomes of experiments, you can only really say
it's about experiments that you personally do, because to you any
other person is just another thing you're observing. But solipsism is
a dead-end philosophy and when it comes to science it's a poison. It
doesn't allow further progress from existing theories, and that's why
I think applications of quantum theory, particularly quantum
computation, were overlooked for decades. You could say people didn't
really think the theory was true because they had rejected the idea of
truth in science. Truth in science must mean correspondence to
reality, or it means nothing. Logical positivism is a dead end, and in
science it's a poison." --Lone Voices Special, At Play In The
Multiverse

}
Tachyglossus - 01 May 2007 14:49 GMT
"footprints in the snow" <option48@draze.com> wrote in message
news:1178026090.871618.156960@

> (David Deutsch) "Some [interpretations] are gibberish, like the
> Copenhagen interpretation." --Taming The Multiverse, New Scientist
>
> (David Deutsch) ".....it is related to a more general anti-rational
> phenomenon that was present in nearly all 20th-century philosophies,
> especially logical positivism, and reverberated into other fields.

(David Deutsch) "...On September 11th 2001, everything changed. I don't know
whether it is I who have misjudged those two men [Bush and Blair], or they
who have grown in stature because of the existential logic of the jobs they
are doing, but either way I was forced to revise my opinion of both of them
sharply upwards. I think the world is very lucky to have the two of them in
charge of their respective countries".

T.
footprints in the snow - 01 May 2007 15:14 GMT
> "footprints in the snow" <option48@draze.com> wrote in message
> news:1178026090.871618.156960@
[quoted text clipped - 14 lines]
>
> T.

"Nevertheless, it is true that [Isaac] Newton wrote some four million
words on theology and prophecy and that, although he did not believe
the world would end in a fiery cataclysm in 2060, he certainly did
believe that biblical prophecy predicted the return of the Jews to
Israel, the rebuilding of the Jerusalem Temple, the return of Christ,
the battle of Armageddon and a 1000-year peaceful Kingdom of God on
earth. Newton's God was a God of prophecy. That such an icon of
rationality should be engaged in something so putatively 'irrational'
as the literal interpretation of biblical prophecy, and that he shares
so much theological territory with the contemporary premillenarian
Protestants that Mr. Harpur is so keen to censure, has placed many
observers in a quandary." http://www.isaacnewton.ca/media/Reply_to_Tom_Harpur-Feb_26.pdf

Which is to say, there are reasons why that approach became a logical
fallacy.

}
Tachyglossus - 01 May 2007 16:52 GMT
>> "footprints in the snow" <option48@draze.com> wrote in message
>> news:1178026090.871618.156960@
[quoted text clipped - 36 lines]
> Which is to say, there are reasons why that approach became a logical
> fallacy.

You miss the point. Daft though Newton's anti-rational, nonsense-generating
obsessions might have been, at least he wasn't simultaneously delivering
finger-wagging lectures to the world about 'gibberish' and the all-polluting
effects of an 'anti-rational phenomenon'; nor indeed did his foolishness
lead him to become a cheer-leader for his age's principal agents of
international crime and mass-murder. If Deutsch doesn't want to end up
looking more of a kook than Newton ever did, he'll have to learn when to
keep his gob shut.

T.
footprints in the snow - 01 May 2007 18:56 GMT
> >> "footprints in the snow" <option48@draze.com> wrote in message
> >> news:1178026090.871618.156960@
[quoted text clipped - 47 lines]
>
> T.

Since spinning off into politics seemed out of context, I took it that
you were going the route of trying to claim that because someone was
an idiot in one area that it counted as evidence for that across the
board. Aside from that, I had and have no interest in the matter. So
if I was mistaken, then feel free to rail about about what Jewish
physicists support or don't support outside their usual work (in any
particular year) all you want.

}
Tachyglossus - 01 May 2007 19:32 GMT
>> >> "footprints in the snow" <option48@draze.com> wrote in message
>> >> news:1178026090.871618.156960@
[quoted text clipped - 59 lines]
> physicists support or don't support outside their usual work (in any
> particular year) all you want.

Excellent melt-down. And I particularly like your gratuitous insertion of
race into the topic: it's the most subtle accusation of anti-Semitism this
n/g has seen in weeks.

T.
footprints in the snow - 01 May 2007 21:44 GMT
> >> >> "footprints in the snow" <option48@draze.com> wrote in message
> >> >> news:1178026090.871618.156960@
[quoted text clipped - 65 lines]
>
> T.

Initially a wink at a certain whack-a-doodle I've seen posting in semi-
vacant groups in the past, who prattles about muddled conspiracies
concerning the theories of Jewish physicists, ranging from Einstein to
Lee Smolin. But also a factor in why an Israeli physicist getting an
inital buzz from two Anglo-American leaders wanting to whack
terrorists in sloppy, misguided fashion probably wasn't that
remarkable to me. Yet if you feel he's a full-blown "cheer-leader for
his age's principal agents of international crime and mass-murder",
then so be it.

}
Dale Kelly - 01 May 2007 15:40 GMT
> the wave function evolves in a
> deterministic way--

the wave function assumes a random (normal) population then ascribes
statistics to it, it does NOT describe classical behavior, and IS NOT a
unifier

Signature

Dale
http://www.vedantasite.org

Desertphile - 01 May 2007 17:22 GMT

> > the wave function evolves in a
> > deterministic way--

> the wave function assumes a random (normal) population then ascribes
> statistics to it, it does NOT describe classical behavior, and IS NOT a
> unifier

Why are the world's physicists unaware of this amazing fact?

Signature

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"His physical presence has a penis!" -- Anya
"I can work around it!" -- Willow

gregwrld - 01 May 2007 17:35 GMT
> On Tue, 01 May 2007 09:40:45 -0500, Dale Kelly
>
[quoted text clipped - 6 lines]
>
> Why are the world's physicists unaware of this amazing fact?

Because they don't take as much LSD as Dale?

gregwrld
Lorentz - 01 May 2007 17:47 GMT
> Because they don't take as much LSD as Dale?
   Because the mind is not chemically or physically deterministic,
and ones will is free regardless of the chemical environment,
obviously LSD can not be a factor in his loss of rationality.

      And you probably have misrepresented Dale. What may be
happening is that he has a chemical imbalance, he has become addicted
to it, and hence he has taken a strong stance against all mood
altering drugs even and especially when medical practionors recommend
them. I base this conjecture partly on his rants against psychiatry.
Which may be the hidden truth in his rants. Mood altering drugs are
probably oversubscribed.
Desertphile - 01 May 2007 19:04 GMT
> > Because they don't take as much LSD as Dale?

> Because the mind is not chemically or physically deterministic,

Yes, it is. :-)

> and ones will is free regardless of the chemical environment,

No, it is not, no matter what Dale writes.

> obviously LSD can not be a factor in his loss of rationality.

But by golly it sure did help.

>        And you probably have misrepresented Dale. What may be
> happening is that he has a chemical imbalance, he has become addicted
[quoted text clipped - 3 lines]
> Which may be the hidden truth in his rants. Mood altering drugs are
> probably oversubscribed.

Signature

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Will in New Haven - 01 May 2007 19:47 GMT
> > > Because they don't take as much LSD as Dale?
> > Because the mind is not chemically or physically deterministic,
[quoted text clipped - 4 lines]
>
> No, it is not, no matter what Dale writes.

You certainly have a capacity to get awfully ANGRY at the other
automatons in the world, don't you? If no one has free will, let
people BE, they can't help it. Of course, since I think people have
free will I can get as angry as I want and not feel bad.

Will in New Haven

--

> > obviously LSD can not be a factor in his loss of rationality.
>
[quoted text clipped - 10 lines]
> --http://desertphile.org
> Desertphile's Desert Soliloquy. WARNING: view with plenty of water
Desertphile - 01 May 2007 21:19 GMT
> > > > Because they don't take as much LSD as Dale?
> > > Because the mind is not chemically or physically deterministic,
[quoted text clipped - 4 lines]
> >
> > No, it is not, no matter what Dale writes.

> You certainly have a capacity to get awfully ANGRY at the other
> automatons in the world, don't you?

Angry? Am I angry? How can you tell? Or are you telling me I
should be angry? Or are you saying you want me to be angry, or are
you hoping I was, am, or will be angry?

> If no one has free will, let
> people BE, they can't help it.

100% of the known observations of the world show no such thing as
"free will." Dale insists upon issuing dicta about what "free
will" is and how "free will" opperates, but so far he has failed
utterly to show first that "free will" exists.

Dale, and other people who believe "free will" exists, are left in
the same sorry state as those who believe flying saucers from
outer space are populated and controlled by unearthly creatures:
they can (and thousands of them do!) argue about why those space
aliens are here, what they look like, what they think about, what
they eat, etc., but they never get around to actually producing
any evidence for the phenomena they are talking about.

"Free will," if it does exist, is unevidenced and therefore
irrelevant.

> Of course, since I think people have
> free will I can get as angry as I want and not feel bad.

You do not require anyone's permission to feel whatever you feel;
most people have zero control over what they feel (i.e., no "free
will" about what and how they feel).

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"I'm the thing that monsters have nightmares about." -- Bully

Will in New Haven - 01 May 2007 21:32 GMT
> On 1 May 2007 11:47:56 -0700, Will in New Haven
>
[quoted text clipped - 14 lines]
> should be angry? Or are you saying you want me to be angry, or are
> you hoping I was, am, or will be angry?

You often write things that lead me, someone who does pay attention,
to believe that you are probably angry at the automatons who have no
more choice in their actions than you do. I am not criticizing you as
you don't think you can help it.

> > If no one has free will, let
> > people BE, they can't help it.
[quoted text clipped - 3 lines]
> will" is and how "free will" opperates, but so far he has failed
> utterly to show first that "free will" exists.

I suppose that he has some sort of obligation to prove it exists,
since he has been nattering about it for quite awhile. However, what
does it matter? If free will doesn't exist, why would you care what he
has proven or failed to prove?

> Dale, and other people who believe "free will" exists, are left in
> the same sorry state as those who believe flying saucers from
[quoted text clipped - 3 lines]
> they eat, etc., but they never get around to actually producing
> any evidence for the phenomena they are talking about.

This isn't a classroom or a courtroom. No one has to produce evidence
for you. If there is free will, it behooves me to act as if there
were. If there isn't, it doesn't matter.

> "Free will," if it does exist, is unevidenced and therefore
> irrelevant.

yawn.

> > Of course, since I think people have
> > free will I can get as angry as I want and not feel bad.
>
> You do not require anyone's permission to feel whatever you feel;
> most people have zero control over what they feel (i.e., no "free
> will" about what and how they feel).

I often wonder whether I control what I feel, control my reactions to
what I feel or just control SHOWING what I feel but people keep making
bad decisions against me at the poker table and that is all I need.

Will in New Haven

--

> --http://desertphile.org
> Desertphile's Desert Soliloquy. WARNING: view with plenty of water
> "I'm the thing that monsters have nightmares about." -- Bully
Lorentz - 03 May 2007 02:09 GMT
> > If no one has free will, let
> > people BE, they can't help it.
[quoted text clipped - 3 lines]
> will" is and how "free will" opperates, but so far he has failed
> utterly to show first that "free will" exists.

   I think you are falling for a old trick in polemics that dale is
using. He is using the old "bait, switch and trap" technique.
1) Dale starts out with the bait, "Scientists and materialists of all
sorts claim that the mind including our feelings and morals is
controlled by deterministic processes."
2) Deterministic Materialist (you) takes bait: "Yes, morals and
feelings are controlled by deterministic processes."
              a) For the record, I am not going to say that the
materialist is absolutely correct here. There may or may not be
nondeterministic processes controlling some subjective phenomena.
Maybe or maybe not. However, regardless, no statement was made about
the "reality" of morals and feelings.
3) Dale switches subject, "You dirty materialist just claimed that
feelings and morals aren't real, and therefore you are claiming that
anyone can do anytthing one wants and it doesn't matter. I want to be
an intolerant bigot and hurt people and other creatures according to
my whim. As you just said that feelings and morals aren't real, then
it is alright to be a bigot and pick on anything that I so choose. You
and the damn (Materialists, Jews, Psychiatrists, etc.) are trying to
stop me from exerting my rights."
     Note at this point it is an obvious lie, as the deterministic
materialist never said such a thing.
4) Deterministic Materialist closes trap: "You, Dale, have no proof
that feelings or morals are real. As you have no proof, stop yelling
at us for saying that I did something wrong."

    Some people can read the materialist in step 4 and interpret it
to mean that it is alright for Dale to do whatever he likes to
anything he likes. Which I think is Dale's real goal.

   I base my analysis on some of his other posts, the ones on quantum
mechanics, where he claims that all processes are always classical and
therefore deterministic. There, the Dualistic Materialist ends up
saying something that sounds like the opposite (some things in life
really are capricious) and Dale then comes to the same conclusion: If
what you say is correct, then I can be an intolerant bigot and do
anything I like to anything and anybody that I like. Funny how two
extremely opposite starting points converge on how he, Dale, can do
anything he likes to anyone he likes when he likes.

    His implied arguement concerning religion is that all feelings
and morals are controlled by an Intelligent Designer (God). Therefore,
individual feelings and morals aren't real. Therefore, Dale has the
right to be an intolerant bigot and do whatever he likes to whoever he
likes, because the Createor has decided it. Although usually spun that
way, the fact that a Creator has decided it does not make feelings and
standards of his lesser creations any less real. Job didn't think that
way, and Jonah didn't think that way.

   For my part: Yes, on a microscopic level things are deterministic,
although in terms of practicality most things in life are capricious.
However, still there are feelings and still there are morals. The
issue of Free Will has nothing to do with the reality of feelings or
even of morals. The issue of a Creator also has little to do with the
existence of feelings and of morals.

 Therefore, Dale does not have the right to do anything to anybody he
wants and I will try to stop it when he does someone.
Desertphile - 01 May 2007 19:03 GMT
> > On Tue, 01 May 2007 09:40:45 -0500, Dale Kelly
> >
[quoted text clipped - 6 lines]
> >
> > Why are the world's physicists unaware of this amazing fact?

> Because they don't take as much LSD as Dale?

Ah, well that does explain it. :-)

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Ross  Langerak - 02 May 2007 03:15 GMT
>> the wave function evolves in a
>> deterministic way--
>
> the wave function assumes a random (normal) population then ascribes
> statistics to it, it does NOT describe classical behavior, and IS NOT a
> unifier

A wave function represents a particle, not a population, and it certainly
does not result in classical behavior.  Also, a wave function is a
probability function, not a statistical function.  The distinction is
subtle, but it is significant in quantum mechanics.  Again, speaking as a
physicist, you clearly do not know what you are talking about.
aasigma - 10 May 2007 10:12 GMT
> > the wave function evolves in a
> > deterministic way--
[quoted text clipped - 5 lines]
> --
> Dalehttp://www.vedantasite.org

According to quantum mechanics,the ground state energy of many system
is non-zero which implies the system is not stable in the ground state
also.Then what to say about the excited states ?
In this sense,q.m is a farce only
PD - 10 May 2007 14:33 GMT
> > > the wave function evolves in a
> > > deterministic way--
[quoted text clipped - 9 lines]
> is non-zero which implies the system is not stable in the ground state
> also.

No. I don't know why you think the only stable state of a system is a
zero energy state.

> Then what to say about the excited states ?
> In this sense,q.m is a farce only
Lorentz - 01 May 2007 15:32 GMT
> all nature in the particle realm, ALWAYS, results in the cause and effect
> models we see in the classical realm, in fact, ALL, interpretations of
> quantum mechanics reduce supposed particle behavior to classical behavior

    You just contradicted yourself. You claimed in other posts that
the mind is not determined by the laws of deterministic physics, that
there is a will and a process of decision making that has no cause and
effect. If so, the particles of the brain can not be bound by any
cause and effect. Obviously, there is a part of nature in the particle
realm that you explicitly believe does not follow rules of classical
behavior.

     If all nature in the particle realm reduces to classical
behavior, then there is no free will. This is because your brain and
body are made of particles. Did you take your medication before you
made that statement?

     There are mainstream (well, slightly off mainstream) physics
theories that reinterprete quantum phenomenon as being emergent
properties from a physical theory that is more classical. Sometimes it
is refered to as the stochastic electrodynamics theory (SED). If
interested, look up a) stochastic electrodynamics, b)zeropoint
energy.

       If the SED theory are true, of course, it applies to the
particles of the brain as well. Thus, there is no free will as you
have claimed.
DougC - 01 May 2007 16:04 GMT
> all nature in the particle realm, ALWAYS, results in the cause and effect
> models we see in the classical realm, in fact, ALL, interpretations of
> quantum mechanics reduce supposed particle behavior to classical behavior

If you could measure it.  But that is impossible.  With billions of
particles and assorted gizwidgets reacting to each other and changing
their relative positions by the nanosecond, any kind of measuring
method or instrument would change the interactions and the (altered)
data collected would be hopelessly outdated before you could read it.
Is that what you mean?  How come Heisenberg didn't think of that?

Yep.  Just because Heisenberg was uncertain don't mean the rest of us
have to be.

Doug Chandler
PD - 01 May 2007 18:20 GMT
> the uncertainty principle says that you cannot empirically know the
> location and momentum of nature in the particle realm for certain

Actually, no, it does not say this at all. It does NOT say for example
that you cannot empirically know the location and momentum of a
particle at all. Videotaping a billiard ball is sufficient evidence
that you can empirically know both.

What the uncertainly principle DOES say is that the product of the
*magnitudes* of the uncertainties of position and momentum of any
particle (including a billiard ball) will be at least a particular
minimum value. For macroscopic objects, this magnitude is so small
that it doesn't really matter. For microscopic objects, it does begin
to matter.

Note the enormous difference between saying that an uncertainty in a
momentum exceeds a certain value, and saying that the momentum is
completely uncertain. Dale is under the impression that quantum
mechanics says that position and momentum are *completely uncertain*
-- that is, nothing is known at all. Nothing could be further from the
truth.

It is a basic misunderstanding of simple terms, and a little bit of
reading will correct the misunderstanding.

PD

> many unethical scientists have equated uncertainty with randomness and
> propagated an uncorrect philosophy called quantum mechanics
[quoted text clipped - 6 lines]
> models we see in the classical realm, in fact, ALL, interpretations of
> quantum mechanics reduce supposed particle behavior to classical behavior

Actually, this is demonstrably, experimentally NOT true. Deterministic
cause and effect (that is, two initial states prepared identically and
with the same laws of physics in play will always produce identical
final states) simply does NOT happen in all reaches of the universe.
If fact, it only happens in the small corner of the universe that we
are comfortable in through our ordinary senses, which is not at all
representative of the universe as a whole. Tough noogies.

PD
Ralph - 01 May 2007 22:02 GMT
> the uncertainty principle says that you cannot empirically know the
> location and momentum of nature in the particle realm for certain
[quoted text clipped - 9 lines]
> models we see in the classical realm, in fact, ALL, interpretations of
> quantum mechanics reduce supposed particle behavior to classical behavior

Ignorant fool!
Chris H. Fleming - 02 May 2007 01:33 GMT
> the uncertainty principle says that you cannot empirically know the
> location and momentum of nature in the particle realm for certain

More than that. The uncertainty principle says a singularly defined
position and momentum do not exist as they are conjugate variables.
This is a property of waves and there is an analogous property for
sound between time and frequency: you cannot play a perfect note in an
instant of time.

> many unethical scientists have equated uncertainty with randomness and
> propagated an uncorrect philosophy called quantum mechanics

"Uncertainty" principle may even be a misnomer, but your ad hominem's
are asinine.

> if you are uncertain, this is NOT random, in fact it means that you
> CANNOT even know if the population of particles is random, a random
> population is determinate and has statistical properties

You are confused. The uncertainty refers to the standard deviation of
the distribution of measurements and not any uncertainty of the actual
measurement. Individual measurements may very well be exact.

> all nature in the particle realm, ALWAYS, results in the cause and effect
> models we see in the classical realm, in fact, ALL, interpretations of
> quantum mechanics reduce supposed particle behavior to classical behavior

That's backwards thinking.
The Merry Prankster Pope - Saint Isadore Patron Saint of the Internet - 02 May 2007 01:49 GMT
It's total misinformation to put it mildly my trip to the new planet
will soon
show this to be so.  I mean 20,000 light years from Earth being able
to get
there in less than an hour is a super dooper miracle and again I want
to
thank Hank with all my heart and soul for the ticket.  I alway thought
we
had taken and had such travel trecknology the governments of Earth got
from crashed alien devices.  Nothing is imposible using simple love
and
light. 1111 is where it's all at - so, then.....there you go and
that's it.

> > the uncertainty principle says that you cannot empirically know the
> > location and momentum of nature in the particle realm for certain
[quoted text clipped - 24 lines]
>
> That's backwards thinking.
galathaea - 02 May 2007 22:11 GMT
On May 1, 5:33 pm, "Chris H. Fleming" <chris_h_flem...@yahoo.com>
wrote:

> > the uncertainty principle says that you cannot empirically know the
> > location and momentum of nature in the particle realm for certain
[quoted text clipped - 24 lines]
>
> That's backwards thinking.

you are still wrong

and growing more and more dishonest
 having been already corrected

enjoying intellectual dishonesty chris?

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
galathaea: prankster, fablist, magician, liar
Chris H. Fleming - 05 May 2007 20:38 GMT
> On May 1, 5:33 pm, "Chris H. Fleming" <chris_h_flem...@yahoo.com>
> wrote:
[quoted text clipped - 34 lines]
>
> enjoying intellectual dishonesty chris?

As much as you are enjoying your nonexistent Bohmian QFT.
galathaea - 05 May 2007 21:07 GMT
On May 5, 12:38 pm, "Chris H. Fleming" <chris_h_flem...@yahoo.com>
wrote:
> > On May 1, 5:33 pm, "Chris H. Fleming" <chris_h_flem...@yahoo.com>
> > wrote:
[quoted text clipped - 36 lines]
>
> As much as you are enjoying your nonexistent Bohmian QFT.

well
 since i posted published articles supporting my claims
 i am sure you are quite able
to point out any mathematical flaws

i am quite willing to accept mathematical mistakes
 and admit my position is wrong

 if they are pointed out

i will await your cogent response

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
galathaea: prankster, fablist, magician, liar
Chris H. Fleming - 06 May 2007 02:56 GMT
> On May 5, 12:38 pm, "Chris H. Fleming" <chris_h_flem...@yahoo.com>
> wrote:
[quoted text clipped - 51 lines]
>
> i will await your cogent response

Calculate some cross sections for us, with your Bohmian QFT.
galathaea - 06 May 2007 05:00 GMT
On May 5, 6:56 pm, "Chris H. Fleming" <chris_h_flem...@yahoo.com>
wrote:
> > On May 5, 12:38 pm, "Chris H. Fleming" <chris_h_flem...@yahoo.com>
> > wrote:
[quoted text clipped - 52 lines]
>
> Calculate some cross sections for us, with your Bohmian QFT.

that is a very strange request

how do you calculate cross sections for the many-worlds
interpretation?
 the consistent histories interpretation?
 grw?
 what about the quantum logic interpretation?
 causal sets interpretation?

i'll tell you if you do not understand

you do it the exact same way
 you do it in the copenhagen interpretation

perturbation expansion is the most common
 starting with the lagrangian and pulling off scattering terms
 using feynmann diagrams or some other placeholder

or there are explicit analytic methods
 in some rare integrable systems

why would you think the interpretation chosen
 has anything to do with the method of calculation?

how do you possibly imagine the phenomenology of copenhagen
 comes into play here?

i did notice you made no mathematical claims against the papers

have you read t'hooft's
http://arxiv.org/pdf/hep-th/0105105

nobel prize winning t'hooft
 claiming realistic quantum mechanics
 may be the only way to overcome
the ontological problems of all the other quantum gravity attempts

of course not

you don't like to read or research

you just like to post your spew on usenet
 and even when its been pointed out to be incorrect
you continue blindly
 smugly
 refusing to learn anything

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
galathaea: prankster, fablist, magician, liar
galathaea - 06 May 2007 06:12 GMT
> On May 5, 6:56 pm, "Chris H. Fleming" <chris_h_flem...@yahoo.com>
> wrote:
[quoted text clipped - 86 lines]
> have you read t'hooft's
> http://arxiv.org/pdf/hep-th/0105105

actually
 the paper of his i intended to reference was

http://arxiv.org/PS_cache/quant-ph/pdf/0212/0212095v1.pdf

the other paper is good
 but it was this later paper where he explains the issues
and suggests the beables of the model that interests him

he actually has written quite often on this
offering his own realist quantum field theories

there are actually a huge number of such theories
 throughout the literature

> nobel prize winning t'hooft
>   claiming realistic quantum mechanics
[quoted text clipped - 13 lines]
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> galathaea: prankster, fablist, magician, liar
Chris H. Fleming - 06 May 2007 08:00 GMT
> On May 5, 6:56 pm, "Chris H. Fleming" <chris_h_flem...@yahoo.com>
> wrote:
[quoted text clipped - 104 lines]
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> galathaea: prankster, fablist, magician, liar

So you can't.
galathaea - 06 May 2007 09:05 GMT
On May 6, 12:00 am, "Chris H. Fleming" <chris_h_flem...@yahoo.com>
wrote:

> > On May 5, 6:56 pm, "Chris H. Fleming" <chris_h_flem...@yahoo.com>
> > wrote:
[quoted text clipped - 103 lines]
>
> So you can't.

for the process

-   +    -   +
e + e -> γ + γ

( pair annihilation )

the two lowest level feynman diagrams are

^         ^
.       .
 .-->--.
/       \
^         V

and

^         ^
.       .
 .--<--.
  \   /
    X
  /   \
 ^     V

which contribute to the s-matrix as

S = -e^2 ( 2 pi )^4 delta( k_1 + k_2 - p_1 - p_2 )
   x ( 1/ '\/( 2 k_1 k_2 ) ) '\/( m / E_2) vbar( p_2, s_2 )
   x ( eps_2 1/(ps_1 - ks_1 - m) eps_1
     + eps_1 1/(ps_2 - ks_2 - m) eps_2 )
   x '\/( m / E_1 ) u( p_1, s_1 )

now
 if i take the lorentz frame
 the representation gives

k_1 = m ( m + E ) / ( m + E - |p| cos( theta ) )
k_2 = ( m + E ) ( E - |p| cos( theta ) ) / ( m + E - |p|
cos( theta ) )

so the trace of the scattering matrix simplifies to

tr(S) = 1 / 2m^2 ( k_2 / k_1 + k_1 / k_2
       - 4( ep_1 . ep_2 )^2 + 2 ) )

so

dsigma
------ = alpha^2 ( m + E ) / ( 8 |p| ( m + E - |p| cos( theta ) )^2 )
dOmega   x 2 m^2 tr(S)

and integrating over the solid angle gives

sigma = pi alpha^2 / ( m^2 ( 1 + γ ) )
 x ( ( γ^2 + 4 γ + 1 ) / ( γ^2 - 1 )
 x ln( γ + '\/( γ^2 - 1 ) )
 - ( γ + 3 ) / '\/( γ^2 - 1 ) )

ie. the cross section

now
 again
where does copenhagen's phenomenalism get used here?

again
 don't think i didn't notice
you provided no mathematical objections to the papers

you have no desire to learn
you have no real interest
 except to try to sound right in front of others

and yet you set yourself up to look extremely ignorant
 and unable to read even the simplest of physical research

why do you do that?

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
galathaea: prankster, fablist, magician, liar
Chris H. Fleming - 06 May 2007 17:55 GMT
> On May 6, 12:00 am, "Chris H. Fleming" <chris_h_flem...@yahoo.com>
> wrote:
[quoted text clipped - 187 lines]
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> galathaea: prankster, fablist, magician, liar

I didn't see any Bohmian interpretation.
Lorentz - 06 May 2007 16:27 GMT
> how do you calculate cross sections for the many-worlds
> interpretation?
>   the consistent histories interpretation?
>   grw?
>   what about the quantum logic interpretation?
>   causal sets interpretation?
    How about the stochastic electrodynamics (with Lorentz invariant
radiation) interpretation?
I think that is a real strong contender as an alternative to the
Copenhagen interpretation (and all those others).
The Merry Prankster Pope - Saint Isadore Patron Saint of the Internet - 06 May 2007 17:12 GMT
> > how do you calculate cross sections for the many-worlds
> > interpretation?
[quoted text clipped - 6 lines]
> I think that is a real strong contender as an alternative to the
> Copenhagen interpretation (and all those others).

I cat sitted for Lotemtz' cat for a couple of weeks
back in 1967 when he went on tour.
Ross  Langerak - 02 May 2007 03:05 GMT
> the uncertainty principle says that you cannot empirically know the
> location and momentum of nature in the particle realm for certain

Actually, that is not correct.  The Heisenberg Uncertainty Principle says
that there is a limit to how well we can measure the position and momentum
of a particle at the same time.  That uncertainty is very, very small.

> many unethical scientists have equated uncertainty with randomness and
> propagated an uncorrect philosophy called quantum mechanics

Can you name one?  The uncertainty principle says nothing about randomness
or probability or statistics.

> if you are uncertain, this is NOT random, in fact it means that you
> CANNOT even know if the population of particles is random, a random
> population is determinate and has statistical properties

I have a degree in physics, and it is obvious to me that you do not know
what you are talking about.  Do you even know the difference between quantum
mechanics and quantum physics?

> all nature in the particle realm, ALWAYS, results in the cause and effect
> models we see in the classical realm, in fact, ALL, interpretations of
> quantum mechanics reduce supposed particle behavior to classical behavior

Again, you clearly do not know what you are talking about.  If quantum
physics were a farce, nuclear decay would not be possible, the laser in your
CD and DVD players would not work, and we could not use spectroscopy.  Only
someone who knows next to nothing about quantum physics (I'm giving you
credit for spelling "quantum" correctly) would make the statements that you
just made.

We have already covered this subject.  But rather than engage in a <