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> Problem with the two slit experiment, Observing later
Laserlight
Posted: Sep 18 2007, 12:55 AM


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Hi TRoc, et al,

QUOTE
LL, while I am very happy that you are agreeing with "the helical function is a perfectly logical explanation of what characteristics a photon possesses", I am a little confused about the "timing". 250+ pages? OAM, spin polarity, phase vortex (node), helice, spiral, helicoid, double helix. It's been said every way that I can imagine, so I had no idea that the "overall concept" had not been communicated.


On the contrary, you have deviated from a continuous "train" of thought and
bounced around from rainbow colors, magenta (what did magenta ever do to
you? laugh.gif ), harmonics, quantum carpets, and numerous other theories without
tying up the loose ends. Basically, open ended discussions, that you refer back to
sometimes weeks later, after several hundred other posts and discussions have
taken place. Perhaps it is your schedule, or we are all "talking over" one another,
trying to get other points/ideas across. Recently, you have been more available
to post, and at C2's urging, everyone let you finish describing your ideas.

Notice that I had to paraphrase what I thought you were saying, to make it
understandable for all. I really don't like "reading between the lines" to try to
interpret what needs be clearly and descriptively said in the first place.

Even though I recall some helical diagrams that you posted last winter,
I must admit that those recollections are "fuzzy". You still have not
directly answered my question regarding whether you are proposing that your
helical model is aligned along the vector direction of travel , or transverse
to the vector direction of motion (a spherical, expanding wavefront).

This must be answered before we proceed! The "solution" that you provide
mandates that a photon is either a corkscrewing "particle" (bubble), that can
be phase separated, within finite limits, or a spherical wavefront that expands
infinitely.

You need to make a commitment for one model or the other, and it must be
discussed and pass muster.

LL

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Laserlight
Posted: Sep 18 2007, 01:38 AM


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TRoc,

QUOTE
I think you have to be careful to not start building a "particle scaffolding" for this wave. It is the appearance of a "virtual" helice being traced out by the moving, rotating "energy peaks". You will need one for each phase, so that they "meet the future at the same time". This is a duality, and we have to keep this in mind. From any ONE perspective on the circle, there is just ONE phase visible. If you could be at 2 places at once, you could see both phases (or from a centered third party).


There is an orthogonal relationship between the phases. What the
model should reflect, is that there are 2 parallel helixes that are
phase separated/offset. They each follow the same "tubular" helical outline,
with the same relative timing, but they have a 90 degree fixed offset from one another.

An analogy to provide conceptual "visualization". The fields are mutually
"connected" at the centerline vector axis (hub) at 90 degrees to one another.
As they advance in time along the vector direction of motion, the fields form a
helical pattern as they rotate/spin around the centerline. The effect is similar to a
propeller moving thru the water, which forms a helical path as it moves forward.

There is a "reverse thrust" or backwash to this forward motion, which I have
previously proposed as being gravity waves that move opposite to the
inertia/passage of energy. It is a spatial displacement "counter force".


QUOTE
In the end, the "counter rotating" phase helice is equivalent to a "counter propagating" one. That is why Wheeler Feynman Cramer is "logical" in some ways. Any amount of thinking about these things, will lead you to the conclusion that ALL WAVES REQUIRE THE CONCEPT OF ASYNCHRONOUS MOVEMENT. Time is a self made "illusion" here. "Time" has never been seen to "go in reverse"; however, PHASE ALWAYS DOES, at the start of the wave.


This is very ambiguous, and I cannot interpret what you are meaning. If I don't
understand it fully, can anyone else? Please elaborate!

Regards,
LL
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TRoc
Posted: Sep 18 2007, 05:06 AM


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Hi all,



I'll try my best. unsure.gif

QUOTE
..numerous other theories without
tying up the loose ends. Basically, open ended discussions, that you refer back to
sometimes weeks later, ..



You're right, the schedule does not permit continuity, and that goes for the "replies" as well. We were in the topic of "the field"; now were going into "form".


It's fine; flexibility is what keeps this thing going. C2 is busy right now, and we can come back to that later. I'm going to be in the "busy" mode for a week, so someone else can have a run.


QUOTE
You still have not directly answered my question regarding whether you are proposing that your helical model is aligned along the vector direction of travel , or transverse to the vector direction of motion (a spherical, expanding wavefront).



The overall picture is going to require both, but the answer is "along the vector axis". So that the E and M fields are locked at 90 deg, and "tracing out" their net affect, the helice. Yes, you can put one in for each, and they are like a "braid" (. However, there are more parameters that have to be "mapped". Let's just go to some pictures, and save me some typing!


http://www.physics.gla.ac.uk/Optics/projec...inglePhotonOAM/
QUOTE
SPIN

Spin eigenstates rotate: at each point, the polarization vector rotates in the transverse plane (in the movies below the beam is traveling from left to right). They possess angular momentum, in much the same way in which rotating masses do.


spin = -1 hbar per photon (right-hand circular polarization)

user posted image


spin = +1 hbar per photon (left-hand circular polarization)

user posted image


There is no spin eigenstate for spin 0. However, the two spin eigenstates can be superposed to give a spin-0 state. As one would expect of a state with no angular momentum, it doesn't rotate:


spin = 0 (linear polarization)

user posted image




Beat-frequency 101: any cyclic measurement, that is a RATE of occurrences per time, or distance, or pi, or whatever model, states that value as "the frequency" of occurrence. When 2 rates are "mixed" (superposed), a third rate is produced. "Geometry", or movement through dimension, and forming "structure", is the result of this emergent dynamic. It is beat-frequency driven.


So, we have our 2D sine wave, and we can "overlap" them, and their superposition creates a "combined" geometry, with a net "angular beat-frequency". When you ask for the result of "interfering" 2 sine waves, of the same frequency", you have to be more specific, as to their states. But, here is one example, that answers questions of LL, and C2.


http://www.enzim.hu/~szia/cddemo/edemo4.htm

QUOTE
When two electromagnetic waves plane-polarized in two perpendicular planes are present simultaneously then the electric fields are added according to the rules of vector addition, a.k.a. 'parallelogram rule' (superposition). The properties of the resulting electromagnetic wave depend on the intensities and phase difference of the component waves.

The following animation presents the superposition of two waves that have the same amplitude and wavelength, are polarized in two perpendicular planes and oscillate in the same phase. Oscillating in the same phase means that the two waves reach their peaks and cross the zero line in the same moments. The superposing components are visualized with red and green color, respectively. The wave resulting from the superposition is shown in light blue.
 
User posted image

When the intersecting plane is looked at from the front then the following image is seen:

user posted image



However, if we superpose these same 2 frequencies, 90 deg off phase, we get the following result, which is our "classic photon", EM wave.


User posted image

When the intersecting plane is looked at from the front then the following image is seen:

user posted image


Let us NOT forget, our once "separate" concepts, of electric, and magnetic. When they "superpose", or co-exist in the same "phase space", we get our EM wave. This not not mean that these individual phenomenon do not have other "interactive" events. The "photon" is a reaction to other, pre-existing conditions. It is the "beat-frequency" of "zero"; there being no measurable difference between these 2 components.


continued..



T.Roc




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TRoc
Posted: Sep 18 2007, 05:51 AM


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QUOTE
As we have seen in the previous pages, two plane-polarized waves can meet. Of course, two circularly polarized waves can meet as well. In that case, the fields are added according to the rules of vector addition, just as with plane-polarized waves.

The superposition of two circularly polarized light beams can result in various outcomes. The most interesting result is obtained when a left circularly polarized wave and a right circularly polarized wave are added. Let's assume that the two light beams have equal amplitudes and wavelengths. The following animation shows this superposition and the resulting wave (red and green colors indicate the two superposing components and light blue indicates the resulting wave):

User posted image



You can see that these last few images are "interchangeable", That last one in particular, show what I mean by "counter propagating, and counter rotating are equivalent". Look at the green and red waves: they can be going the same direction, opposite "handed" (rotation), or they could have the same "chiralness", and be moving in opposite directions. It shows, that while W,F-C may not be a "unique" solution, it is viable, and well within the "rules".


http://www.physics.gla.ac.uk/Optics/projec...inglePhotonOAM/

QUOTE
ORBITAL ANGULAR MOMENTUM (OAM)

The phase fronts of light beams in orbital angular momentum (OAM) eigenstates rotate, clockwise for positive OAM values, anti-clockwise for negative values. The phase front with 0 OAM doesn't rotate at all.


OAM = -1 hbar per photon (right-hand helical phase front)

user posted image


OAM = 0 (plane wave)

user posted image


OAM = +1 hbar per photon (left-hand helix)

(del image for space)


OAM = +2 hbar per photon (two-fold helix)

user posted image


OAM = +3 hbar per photon (three-fold helix: fusilli)

user posted image



Note the "dimensional" change, in both (OAM and spin) models, and their "zeros". The "plane wave", and the "linear polarization".


On another page of that same website:

http://www.physics.gla.ac.uk/Optics/projects/AM/

QUOTE
(May 2007) The overlap of two laser beams creates both constructive and destructive interference. For Laguerre-Gaussian modes, the resulting patterns appear as a circular array of petals. We have now shown that it the beams are chosen correctly, the destructive interference forms a circular array of dark holes, ideal for trapping atoms at very low temperatures. Shifting the frequency between the beam causes the pattern to rotate, creating what we call an Optical Ferris Wheel.

(emphasis added)


QUOTE
(August 2004) One of the best known physical laws, Heisenberg's Uncertainty Principle, states that the momentum and the position of a particle cannot be measured simultaneously with arbitrary precision. This sets a lower bound for the product of the uncertainties of these quantities. The uncertainty relation also applies to other pairs of physical quantities, known as conjugate variables. In particular, the angular uncertainty principle relates angular momentum and angular position. The first experimental verification of this was performed in our laboratory using light beams carrying orbital angular momentum and precise angular position filters.




QUOTE
The Doppler effect is familiar to anyone who has heard a fire engine speed past — because the (sound) source is translated relative to the observer, its frequency is shifted. Ę If a (sound or light) source is rotated, an analogous frequency shift occurs.


This can be understood in terms of pasta spirals ("Fusilli"), which have the shape of the phase fronts of specific light beams that show the rotational Doppler effect, namely Laguerre-Gaussian (LG) beams with an azimuthal index l = 3.


First of all we can use pasta spirals to understand the normal Doppler effect. As the light propagates, the pasta spiral moves forwards. We now pick an "observation point", which the pasta spiral passes as it moves forward. At this point we can see the phase fronts (or intertwined helices that make up the pasta spiral) move past one by one. The frequency with which they move past corresponds to the optical frequency of the light beam. If we now move the observation point in the opposite direction of that in which the pasta spiral moves, then successive phase fronts are encountered more quickly, i.e. the frequency with which you encounter phase fronts has changed. This is exactly the normal Doppler effect.


We also encounter the phase fronts at a different frequency if we rotate the pasta spiral about its own axis as it moves forwards (or alternatively if we rotate the observation point around the axis of the pasta spiral). This is the rotational Doppler effect.


We can understand the rotational Doppler effect more completely by studying the time evolution of phase- and field cross sections. The two animations on the left show the time evolution of the phase (gray shading) and the electric field vectors in beams with different values of spin (hbar s) and orbital (hbar l) angular momentum.


The top beam has values l = 2 and s = 1, which implies that the distribution of the electric field has a (l + s = 3)-fold symmetry.


user posted image


The bottom beam shows the case of l = 2 and s = -1, giving (l + s = 1)-fold symmetry to the resulting electric field.


user posted image


Note that, although the phase distributions of the two beams rotate with the same frequency, the distributions of the electric field do not.

(emphasis added)


Every Quantum question needs to be asked in Relative terms.

rolleyes.gif


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

QUOTE
An optical vortex (also known as a screw dislocation or phase singularity) is a zero of an optical field, a point of zero intensity. Research into the properties of vortices has thrived since a comprehensive paper by Nye and Berry, in 1974,[1] described the basic properties of 'dislocations in wave trains'. The research that followed became the core of what is now known as 'singular optics'.


Light can be twisted like a corkscrew around its axis of travel. Because of the twisting, the light waves at the axis itself cancel each other out. On a flat surface, an optical vortex looks like a ring of light, with a dark hole in the center. This corkscrew of light, with darkness at the center, is called an optical vortex.

The vortex is given a number, called the topological charge, according to how many twists the light does in one wavelength. The number is always an integer, and can be positive or negative, depending on the direction of the twist. The higher the number of the twist, the faster the light is spinning around the axis. This spinning carries orbital angular momentum with the wave train, and will induce torque on an electric dipole.

This orbital angular momentum of light can be observed in the orbiting motion of trapped particles. Interfering an optical vortex with a plane wave of light reveals the spiral phase as concentric spirals. The number of arms in the spiral equals the topological charge.


An optical singularity is a zero of an optical field. The phase in the field circulates around these points of zero intensity (giving rise to the name 'vortex'). Vortices are points in 2D fields and lines in 3D fields (as they have codimension two). Integrating the phase of the field around a path enclosing a vortex yields an integer multiple of 2π. This integer is known as the topological charge, or strength, of the vortex.



We also have the "Gouy phase", which is a longitudinal phase delay.


Plenty of options to create frequency specific geometries.



ciao,


T.Roc


This post has been edited by TRoc on Sep 18 2007, 06:23 AM


--------------------

I know Nothing. I looked all over to find it, but found it Nowhere. The funny thing is, it was right between 2 things, that I knew Everything about. It felt like forever, but really, it was no Time at all.

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Laserlight
Posted: Sep 19 2007, 04:18 AM


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Interesting, no counter arguments. Reassessments/digestion ongoing. biggrin.gif

Troc,

The silence is a good thing. It means that everyone is evaluating the
information and trying to rationalize how it will change their preconceptions.
From 2d wave theory, to resonance in 4d.

Excellent site.

http://www.enzim.hu/~szia/cddemo/edemo0.htm

http://www.enzim.hu/~szia/

LL

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Good Elf
Posted: Sep 19 2007, 07:36 AM


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Hi Confused2, TRoc, Laserlight, "THEY", "THEY2" janrinze, Jal, Montec, yquantum, StevenA, "Why Not?", Siau, Neil Farbstein, Terry Giblin, et al,


QUOTE (Laserlight)
Interesting, no counter arguments. Reassessments/digestion ongoing.
Not so quick... I have a few points to advance...

Firstly I would like to give some kudos to TRoc with his excellent web page site that he has found. It says it all regarding circular dichroism and circular polarization in materials.

Circular Dichroism and Circular Polarization

QUOTE (TRoc on Optical Doppler Shift)
...First of all we can use pasta spirals to understand the normal Doppler effect. As the light propagates, the pasta spiral moves forwards. We now pick an "observation point", which the pasta spiral passes as it moves forward. At this point we can see the phase fronts (or intertwined helices that make up the pasta spiral) move past one by one. The frequency with which they move past corresponds to the optical frequency of the light beam. If we now move the observation point in the opposite direction of that in which the pasta spiral moves, then successive phase fronts are encountered more quickly, i.e. the frequency with which you encounter phase fronts has changed. This is exactly the normal Doppler effect.
I would like to clear up this point since it is essential to understand Special Relativity. Doppler Shift with respect to light is different to Doppler shift with respect to sound. Unlike sound the frequency is not affected by "relative movement in a medium" that has a fixed propagation velocity. You can actually exceed the velocity of sound in air. Sound travels through air at a fixed velocity so movement away from source relative to the "motionless" air results in the sound being received at a lower relative velocity than if source and observer were both at rest. This means the "pitch" of the sound is lower... Sound is just the alternating longitudinal pressure waves in the atmosphere as they impact our eardrums.

Regarding light the velocity is always measured as being C relative to all observers everywhere in whatever state of relative motion. What changes is the "optical pitch". "Optical Pitch" (frequency) is simply the number of optical wavefronts that pass the observer per second (NOTE: ... of the observers time relative to an observer clock). If you compare clocks (difficult) the actual "relative rate" of the observer and the source clock times are running at different rates dependent only on the relative velocity. All observers think their own clocks run at a fixed constant rate. As a point of truth they all do but comparisons with that observer clock of relatively moving clocks will always show other clocks marking time differently.

Now there is an absolute effect and there is an observational effect. Moving clocks "always" run slow (they all lose time relative to "stationary" unaccelerated clocks) but when we are talking about the frequency (color) of light the relative timing of clocks can "visibly" be running fast or slow depending on the "sign" (+ve or -ve) of the velocity of the moving frame relative to the observer (and his "standard" clock). This often confuses people. Special Relativity can lead to a real loss of synchronization between clocks whereas with sound we insist that clocks remain synchronized. As a rule of thumb you can always tell which clock is running slow by referring to the clocks history since initial synchronization... the accelerated clock will have always "lost ticks". If both clocks are brought back into the same inertial frame again and a local measurement made, both clocks will have the same "ongoing" rate of time with a loss of synchronization provided there is nothing mechanically wrong with them.

That comparison between different time scales is what causes the difference in pitch. The different pitch/frequency can lead to differential aging on round trips at high velocity. If an observer clock appears "slow" relative to a relatively moving source then the "pitch" of the light being emitted is raised relative to the observer. ... The source clocks all seem to be running at a higher/faster rate when the source is approaching. This is seen in such effects as the Jet from M87 (probably due to a black hole). What is happening is light emitted from M87 over a period of 6 hours is received on earth over a period of one hour. The speed of that light is always measured as constant but the pitch of the light is raised correspondingly since the jet is moving toward the earth at "almost" the speed of light. The light wavefronts are correspondingly "crushed together" in the direction of the earth.

What is not happening is the source traveling at 6 times the speed of light though this is what "appears" to be happening. A particle in that "jet stream" would visually appear to cover six times the distance that light traveling at C would travel in the same time. The source (where the illumination is coming from) is moving close to the speed of light in our general direction but is closely "following" the previously emitted light and continually emitting new wavefronts. We (observers) receive them as if they were from a source at rest in our frame of rest at 6 times the emitted frequency. However this is not the case and the source is moving rapidly towards us near the speed of light. Each "new" wavefront is emitted from a translated "origin" (read dipole source) ... this "origin" is continuously moving closer and closer to earth so successive wavefronts are "crowded" together.

So regarding the pasta spiral analogy above... the 'speed" of the pasta spiral is unchanged but the length of the pasta spirals are changed due to time dilation, the crests are closer together in our observer frame of reference. This is because the fundamental dipoles that created these "spirals" are moving toward the observer at an appreciable proportion of the speed of light effectively moving the point of origin toward the observer and providing him with a view that appears as an increase in source frequency.

The next point I would like to make is that light is not "moving" as in traveling in time. The photons are all "frozen in time"... Due to our relative "movement in time" the photons appear to be moving but they are simply wavefronts that are passing our observer position. The "need" to describe light moving is a cultural one and does lead to confusion. Light spreads not moves like a "wriggledly snake" which needs the benefit of the passing of time to do that trick. This light is like a dead "bent" snake, with a severe case of rigor mortis, being dragged past the observer. If there is no passage of time there can be no movement... also there can be no "dynamics".

The illustration TRoc supplies of the superposition of two electrically polarized waves is a very interesting analogy. Dichroism is "supposed" to be describing two (or more) colors (frequency) in materials when light is split according to frequency. Another meaning (meant to confuse but the more appropriate definition in this case) is the same word used to describe a chiral polarization states in a material dependent on the "handedness" of the atoms that compose it. There are left handed and right handed "optically active" materials. Some organic chemicals and even some inorganic chemicals have this property such as sucrose solution for instance. They absorb/block one type of chirality and not the other. This indicates that even "simple" plane polarized light can be a superposition of a left handed chirality and a right handed chirality both at the same time since plane polarized light can be broken down into two counter chiral states that 'sum" to a plane polarization. We see that principle in the animations provided by TRoc.

While this effect is very interesting it is actually not the topic we are discussing. The discussion is not about continuous wave electromagnetism in different states of polarization it is about individual photons which possess chiral properties that constitute individual wavepackets. The question is what kind of chirality individual wavepackets of light possess?

A continuously excited electromagnetic dipole radiator always produces a plane polarized wave. It is "apparently" composed of equal amounts of left hand circularly polarized light and right hand circularly polarized light... Both at the same time. I can only assume that this means that each packet can be either left hand circularly polarized or right hand circularly polarized at the one time but that two different photons one left and one right circularly polarized "sum" to make plane polarized "continuous wave" light. Alternatively does each wavepacket of light have both left and right circularly polarized light in it? I can only assume the former position since a circular polarizer will reduce the beam intensity by half. This means that 1/2 the photons are left circularly polarized and half are right circularly polarized in a plane polarized beam. I think what is actually happening is that if you use a polarizer this "forces" the photons to be absorbed or be transmitted with a particular polarization. It just so happens only 1/2 the photons can get through a (perfect) polarizer. The other 1/2 are absorbed (blocked). Those that get through now all have that exact polarization through a forced alignment of the electric field vector. Since photons are quanta and are either absorbed or not .... 1/2 are absorbed as particles and the others will undergo the "indignity" of realignment without loss of integrity in the wave state. So 1/2 the intensity of the beam is lost. This polarization would occur regardless of what type of polarization is applied... if plane polarization is applied a further orthogonal plane polarizer will block all those 'aligned" photons. Conversely if left circularly polarized a right circularly polarizer will block all the remaining photons. If left circularly polarized and a plane polarizer applied the beam brightness will drop by 1/2 while half will be absorbed again.and the light will be plane polarized again. You would be able to repeat this operation as many times as you wish with the brightness dropping correspondingly. This operation is similar to that when a Holographic template is used to transfer OEM to a photon. The photons are not simply selected from photons statistically, they are modified by the template since the OEM is not in the photon originally. In a likewise manner the photons that pass into various polarizers (linear and circular polarizers) some photons are modified through "interferences".

The next important point issue is getting back to the single photon... it must contain usually an arbitary polarization or in the case of a single dipole atomic excitation, a fixed polarization angle aligned along the axis of the radiators (the primary alignment of the electron "jump" between the two shells). In the case of a gaseous LASER radiator it is probably "natively" non-aligned because of random motions in the gas (yet still coherent) or it may indeed be aligned due to the population inversion process forcing a particular polarization. I will be guided on what people think about that process. Internal to single photons we have a single polarization state which should be linear aligned to the primary radiator. This may be composed of one retarded wavelet that is "circularly polarized". An identical phase reversed and time reversed "circularly polarized" photon from the future (advanced wavelet) will "capture" and move with the single photon's retarded wavelet as a resonance between the past and the future. The sum of these two wavelets is a single plane polarized retarded photon packet.

Polarizers will not be able to separate those two "Wheeler Feynman" internal advanced and retarded photon packets since they are actually one and the same and not separate events.

Now to the "mysteries" of topological charge. Electromagnetic vortices exhibit this phenomenon. That is the EM wave is wrapping around itself and according to the amount of this twist can exert a force on charge dipoles. This is therefore a kind of synthetic electric charge created by the dynamic of the EM wave when it becomes knotted. Recall electromagnetic waves contain no charge in the vacuum but instantaneously or through resonances the electric field can have a pattern that can externally be seen as charge. These usually need Laguerre Gaussian Modes. Still another possible use for the topological charge is in creating the electronic charge for fundamental particles. See "Is the electron a photon with toroidal topology?" by Williamson and Van Der Mark
User posted image
... Click to enlarge...
...and of course "The Nature of the Electron" by Qiu-Hong Hu
Is the electron a photon with toroidal topology?: by Williamson and Van Der Mark
The nature of the electron: Qiu-Hong Hu

In general I am very pleased with what TRoc has said but as you see there are some "nit picky" points to clear up. Other input welcome... criticisms etc... all welcome.

Cheers

This post has been edited by Good Elf on Sep 19 2007, 07:50 AM


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"Aa' menle nauva calen ar' ta hwesta e' ale'quenle"
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Confused2
Posted: Sep 19 2007, 10:48 AM


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Hi Good Elf, TRoc, Laserlight and all,
Sorry I don't have time to put this better.. a variation on what Good Elf is saying ..

Apparently Einstein said..
QUOTE
The wireless telegraph is not difficult to understand. The ordinary telegraph is like a very long cat. You pull the tail in New York, and it meows in Los Angeles. The wireless is the same, only without the cat.


Much the same applies to snakes.

If we have a fast moving train going through a station..

Two passengers use walkie-talkies to talk to each other across the carriage. From the station PoV the EM snake appears to be going somewhat sideways. Does this make sense? The pictures of fields only make sense in the context of source/detector (at least without a lot more relativity than I am capeable of).

EM is a can of worms too.

Best wishes - C2.

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jal
Posted: Sep 19 2007, 03:58 PM


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Hi Troc!
Very good!
If everyone agrees to use these pictures/references
http://www.enzim.hu/~szia/cddemo/edemo8.htm
This is a very good base to start to do the analysis.
Now we should be able to do your analysis (divide up the pattern into 12 harmonics.)

After this has been done we should be able to analyse Good Elf's statement.
"Due to our relative "movement in time" the photons appear to be moving but they are simply wavefronts that are passing our observer position."
jal


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JAL'S BLOG
http://www.physicsforums.com/blog.php?b=2
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maybe
  Posted: Sep 19 2007, 11:01 PM


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All,

You will end up in Alice Wonderland if you go by this person.

This is his level of skillfulness by virtue of possessing special knowledge of DNA Binding Protein prediction.

http://www.enzim.hu/~szia/cddemo/edemo0.htm

Regards,
maybe ohmy.gif
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maybe
  Posted: Sep 20 2007, 12:13 AM


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DNA Binding Protein prediction

This server predicts whether a protein is DNA-binding from its structure and/or sequence. The algorithm is described in the following paper:

Szilagyi A, Skolnick J:
Efficient prediction of nucleic acid binding function from low-resolution protein structures.
J Mol Biol. 2006 May 5;358(3):922-33. Epub 2006 Mar 10. PubMed

Important note: The method was essentially developed to predict DNA binding ability from the three-dimensional structure of a protein. Although it can predict DNA binding from the protein sequence alone, pure sequence-based prediction was only validated on a very small set of sequences (all of them belonging to structures in the Protein Data Bank). Therefore, the actual false positive and false negative rates of purely sequence-based predictions could be higher than the estimate indicated here. A three-dimensional structure should be used as input to the server whenever possible.


By András Szilágyi (szia (at) enzim (dot) hu)
Comments and suggestions welcome!

LOL
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Good Elf
Posted: Sep 20 2007, 06:36 AM


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Hi Confused2,

QUOTE (Confused2)
Much the same applies to snakes.

If we have a fast moving train going through a station..

Two passengers use walkie-talkies to talk to each other across the carriage. From the station PoV the EM  snake appears to be going somewhat sideways. Does this make sense? The pictures of fields only make sense  in the context of source/detector (at least without a lot more relativity than I am capable of).

EM is a can of worms too.
Easy primer on Special Relativity (bits from Wikipedia... but not all)... The relative positions of origins of the two Inertial Frames (observer and observed frame) in relative motion is an important consideration. This little discussion is to emphasize the difference between where events are and what is seen by an observer..... And of course what is the difference. There is a special direction in Special Relativity. This is the direction of the relative velocity vector, it is "different" from the other coordinate directions. Special Relativity does not affect the orthogonal directions so align the two frames (observer and observed frame) such that both origins are selected to be "in" the initial position of the point of interest in the relatively moving observed frame at t=0.

The motion of the observer should be thought of as being at rest regardless of any "trick" that describes the state of motion. Remember all observers can be considered at rest in their own inertial frame. This actual frame extends to infinity in all directions (in the absence of gravity fields) so we can pick an arbitrary origin for both inertial frames that includes both the observer and the point of interest in the moving frame and still align the preferred frame along the mutual velocity vector. Now we have the two frames with the observer, in general, displaced from this origin of its own frame by this fixed position vector.

Special Relativity (without corrections) describes single sets of coordinate transforms between the two coincident frames (which coincide with the "point of interest" at t=0). The x axis must also coincide since it is a "preferred direction" along the velocity vector.... most important point.

So for an event in the unprimed frame p with coordinates user posted image
the coordinates in the primed frame (observer frame) user posted image
user posted image
user posted image
user posted image
user posted image
... where...
user posted image

This transform will give you "new coordinates" in the other frame for the same event. Just plug in the values of v,x,y,z,t in the moving frame and the equations churn out 0,x',y',z',t' in the observer frame (in this scheme the primed coordinates indicate the observer frame in which the observer is at rest). This is an "event" in the moving frame at t=t. This event is "witnessed" by the observer with coordinates (p',q',r') relative to the observer frame origin. By calculating this t' and adding the time of propagation from the event for light to reach the observer (expanding on the surface of a sphere)... This is...

sqrt[ (x'-p')^2 + (y'-q')^2 + (z'-r')^2]/C = t".

This is simply the time light takes the event at (x,y,z,t) in the "moving" frame and consequentially at (x',y',z'.t') in the observer frame to propagate to (p',q',r') where the observer is physically located. So the new time coordinate as measured by the observer is (t'+t") and thus the event as seen in the observer frame is (x',y',z',(t'+t")) from the observers position and time at (p',q',r',(t'+t")). This could be a single flash of light... an event. In the simple case it would be convenient to locate the observer at the origin but obviously this is not possible in the general case. So this is what is "seen" and the event is "observed" at (x',y',z',t'+t") and the event itself is what "occurs" is located at (x',y',z',t'). To work out all kinds of stuff you need to know what you "see" and what/where the event "is" as being logically separate.

The other point is what is "seen" is what the observer senses as being all at the same instant in time at the observer position. This is a difficult problem in practice so a computer would be needed since it is the inverse of the problem above. To watch a particular set of points (say on the vertices of a moving cube in the observed frame), what you see at a particular instant must be corrected for propagation delay so that the light from events at all 8 vertices arrive at the observer at the same calculated time according to the observer frame clock... I suggest the easiest way would be for you to derive a world line for all 8 vertices for a large number of times as seen from the observer position and then match up the position of the 8 points with the exact same time index. This would indicate what is being "seen" at a particular instant at the observer position... A position for all 8 points for the same sequential instants in time. Do people understand what I am saying here and I hope I am not sounding patronizing?

I would also add that in the real world things are happening far too fast for human eyes to actually notice anything at all.Some simulations on the web slow the speed of light down to a couple of kms per hour... Pretty unrealistic but you need that to 'see" anything at all... After all we are talking about "the speed of light" here.

There is a further complication... "Nailing up your own local set of coordinates". In general the preferred observer frame is not the coordinate frame of choice by people who want to ask "silly questions" of position relative to a "local road map". This coordinate orientation may not be convenient for the observer if the observer has chosen a special local coordinate system (perhaps relative to the surface of the Earth for instance). This set of coordinates we have derived would need to be subject to a translation and a rotation in three space to coincide with the local coordinates which may need to center on the observer. We are now using another point as the origin of the new local coordinate system. We have done all the hard work of converting the original event into "preferred" observer frame coordinates, we now need only "rotate and translate the preferred coordinate system" into coincidence with the new local coordinate frame using the Euler Angles. These are usually quoted using the directional cosines between the the three orthogonal principal basis axes expressed in the anticlockwise direction. Please note that signs for everything such as the positive and negative axes and velocities and in this case how to define the coordinate frames (left hand or right hand) and the Euler Angles between them... Important conventions if you want the right answers.

So this translation is simply the difference in the origin of the "preferred observer coordinate system" and the origin of the "local coordinate system".That is the translation bit. So we subtract that from the present preferred coordinates leaving the position vectors of the "preferred coordinates" relative to the new local origin. Now using this 'vector" operate on it with the rotation matrix to get the final coordinates relative to the local coordinate system.
http://anorganik.uni-tuebingen.de/klaus/nm...er/rotmatto.gif
Where the angular directions are alpha, beta and gamma.

Assuming we have these two coordinate systems in the one inertial frame of reference. The first coordinate system is a "specially selected" orthogonal coordinate system. The next coordinate system is the "local" coordinate system that could have an arbitrary relationship with the first observer frame of reference. Like I say a computer is the way to go.

Generalized coordinates cannot be used as they can in General Relativity. The main "flaw" in General Relativity is to assume that you can use generalized coordinates... you can... only if velocities are small relative to the speed of light. This is OK for calculating geodesics in a very "slow" Universe but Special Relativity is still the method of choice in a "high speed" Universe. I have seen another attempt recently where GR has been used to calculate a high speed Universe and some pretty unconvincing results seems to come out of it... still it may be worth looking at.

Physicist to Present New Exact Solution of Einstein's Gravitational Field Equation
http://www.physorg.com/news10789.html

Interesting reference...
http://anorganik.uni-tuebingen.de/klaus/nm...uler/euler.html

Hope this helps...

Cheers


--------------------
"Aa' menle nauva calen ar' ta hwesta e' ale'quenle"
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Confused2
Posted: Sep 20 2007, 08:42 AM


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Hi Good Elf and all,

A while back I thought I had solved the twin paradox .. it is 'obvious' that the twin taking the longest path will end up being the youngest. Pride comes before a fall. .. to save myself embarrassment I won't point out the actual post .. the kind response lead me to see that my 'solution' defies ordinary logic and is in itself paradoxical . The transforms give the 'right answer' but give no insight into HOW/WHY .

I suspect the HOW/WHY of QM and the HOW/WHY of relativity (edit 'spacetime') must be intimately linked ** .. but just HOW and WHY I have no idea.. nor (I suspect) does anyone else.

Best wishes C2.


Wireless is the same, only without the cat. <- !

Edit ** .. after reading my own post I'm not even sure of this QM/SR/GR link .. those remarkably clever people with the Standard Model would probably have done it already if it were possible ..

This post has been edited by Confused2 on Sep 20 2007, 09:31 AM
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Good Elf
Posted: Sep 20 2007, 09:34 AM


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Hi Confused2,

QUOTE (Confused2)
I suspect the HOW/WHY of QM and the HOW/WHY of relativity (edit 'spacetime') must be intimately linked ** .. but just HOW and WHY I have no idea.. nor (I suspect) does anyone else.
They are and you are right... Special Relativity is the high velocity end of de Broglie wavelength. They are reciprocally related and literally "wrap on the speed of light" and "zero velocity" respectively. For particles as V -> C the wavelength λ -> 0 and as V -> 0 the wavelength λ -> ∞
User posted image
http://en.wikipedia.org/wiki/De_Broglie_wavelength
A careful examination of Special Relativity and de Broglie Theory lead to a reciprocal relationship as I have mentioned a number of times before. These transformations are rotations on the surface of a "sphere".... the angle of rotation is arcsin (V/C), this is Special Relativity.

This is the surface of the light cone and as V -> C it undergoes a rotation on the surface of the lightcone away from the direction of initial propagation to an orthogonal direction as V approaches C. It is like a conker on a string where the force of application is now centripetal (orthogonal) rather than collinear.... Putting it another way "spin" rather than "thrust" in a highly curved space. If flatspace has become curved then there are additional dimensions to flatspace since this is telling us "something lies beneath" the veneer of spacetime..

Cheers

This post has been edited by Good Elf on Sep 20 2007, 10:06 AM


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"Aa' menle nauva calen ar' ta hwesta e' ale'quenle"
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TRoc
Posted: Sep 20 2007, 09:21 PM


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Hi all,



Good Elf Posted on Yesterday at 7:36 AM
QUOTE
In general I am very pleased with what TRoc has said but as you see there are some "nit picky" points to clear up.



Those are certainly better off "addressed", than "ignored". Any potential errors should be pointed out, as they are noticed. This helps us all grow.


I don't see any "serious" problem; I think it is the usual semantic nature of definitions, and habits formed by specialization.


QUOTE
Doppler Shift with respect to light is different to Doppler shift with respect to sound. Unlike sound the frequency is not affected by "relative movement in a medium" that has a fixed propagation velocity.



This is worth "checking out". No disagreement there, GE. The relationship of the "time evolution of phase and field cross sections" is definitely not the same as sound in a medium. The relativistic Doppler shift (RDS) is not the same, and it is what I, and the links are referring to.


What you are concerned with, is that I am "constructing scaffolding", with which to establish a preferred reference system. Don't worry, I'm not that clever. Fortunately for me, the concept of "beat-frequencies" already does this for me.


I am using the term "scaffold" to mean "temporary geometry", aka, "phase geometry", and several other names. Even if this only happens for a few cycles, it is enough to cause self interference, and dictate the shape of the envelope, from the inside, out. This is a true emergent dynamic.


The fact is, that 2 waves that are "moving" at c ("photons"), are moving (of course) at the same, constant velocity. Therefore, any difference in the ratio of that constant, divided by its wavelength (recursive distance) is ABSOLUTE. It is independent of either source, because it starts from a wavefront. (node)


What didn't I say there, that needs "filling in"? The 2 waves are the same frequency, and they are superimposed, so on the same axis as well.


They will not "spread" here, because there is no impulse, no energy, 0 frequency difference to cause this.


However, any difference in frequency (with the other parameters unchanged) will create an absolute self-referential metric, stemming first from the fundamental axis that is inherent to Doppler/Lorentz/Einstein modeling. Secondly, the "world lines" that are used create definite lines connecting the geometry of the shape under question, to the sink, also are establishing reference points, as well as center of symmetries.


In the end, Resonance Theory (RT) asks for such small, and logical changes to the "interpretations" of these existing "giants", that I think people will have no problem in making the small mental trek.


RT is more a set of "software updates", than a true "new Theory". At the heart, yes, there is "new Physics", that must be understood before the "final answer" will really make sense. After a very logical, and "tabula rasa" beginning, the "giants" are seen to be "more realistic", and without conflict.


The Bridge does exist. We must hammer the last nail into the coffin of "Monochromatic Assumption" first.


We also must "pull weeds": "timing" is not subject to "contraction", without a symmetrical accompanying of a "change in rhythm". If you change the denominator in a "rate", then you are only allowed to use integer ratios with the numerator. Time is the common denominator in this relationship (frequency-wavelength). If that parameter changes, the both of the others do. If you find that the "frequency stayed the same" when you measure, then you can either believe that "space-time contracted", without any explanation, and in disregard to conservation of energy (based on the QM zero point "fact").


Or, you can see that it is our "measurement" that changes. That measurement is "frequency", and there are additional "frequencies" that are contributed by the medium (Space), that are the cause for Conservation of Energy that is the final result. "Contracting" Space AND Time is asking Energy to "go away". Contracted into where? Other dimensions? Hmmm, I'm going to hold out for the Logical approach. Answer the more pressing questions/problems first, and see where we get. Conservation of Energy DEMANDS NON-Linear methodology. The linear approach is a disaster, when looked at closely; it CAN NOT support the Laws of Thermodynamics.


There is NO QUESTION as to the FALSENESS of the "vacuum = nothing" premise.


There is NO QUESTION as to the FALSENESS of the "monochromatic nature" of light, except as some form of "mean" frequency.


There is NO QUESTION as to the FALSENESS that "Time" can be stopped, or reversed. Only the "concept" of the abstraction can have imaginary properties.


There is NO QUESTION as to the FALSENESS of the "constancy of the speed of light". See #1 above. THERE IS NO VACUUM for light to travel "c " in. This value is a measurement result, and WILL NOT WORK unless MODIFIED with the Refractive Index of the REAL medium (average position of atoms at equilibrium). What IS constant is the RATIO, with TIME unchanging as the denominator.


If "Space" is treated as a "real vacuum", then "clever methods" of conserving energy must be used. Unfortunately, those methods are not logical, nor self-consistent. "True" velocities MUST be calculated, and this takes the path through "transverse" modes.


When you get to the "Transverse Doppler Shift", the "method" runs out of steam.


That is what you are asking (C2), with the "side view" questioning. It is a "bad question", because we can not "collapse" from that angle. To what are you inferring that needs "contracting"? You can't "contract nothing", unless your math has become Science Fiction.


NOTHING with MASS can travel at the speed of light. This includes (for those Science fiction fans, and I am not one) "observers riding on 'photons'". Non-questions give non-answers.


IF you are "basing everything" on this "gedanken", then you are writing Science Fiction. This is NOT the Holistic picture. "Consciousness" requires mass, reflecting pure thought. Yes, there are certain benefits from "God meditations", but you can not be of service to others in this state.


You must bring back what you "imagine", and then apply reason, and logic to it, to get a "story" in which to share. This is the way to help others realize the "unknown".


Bottom line: you MUST INCLUDE the perspective of ALL of the electrons involved with this transaction (light energy). IF you TRY to accelerate an electron so that it has the same "perspective" as "Albert riding on a photon", then the electron will DUMP Mr Einstein off at the nearest "relaxation station", THROUGH ASYNCHRONOUS (inverse symmetric) MOVEMENT. This is how Energy is conserved. The "photon" continues on the path, WITHOUT any "riders" (mass), AND the electron changes direction, shedding the velocity induced extra mass (rider) too.


Saying that the "photon", from its own perspective, does not experience time, and therefore, can not have time based dynamics, doesn't lead anywhere. The time based dynamic requires electrons to count, and fortunately, they DO experience "time", in the form of "trapped energy". That is why our concepts of "velocity", "frequency", and "wavelength" work together: because there is a FIXED ratio of time between energetic events/exchanges. (those are between electrons, of course)


In fact, the "timeless" imaginings for the "photon" are completely incongruent with the way in which they (waves) are measured. Time is required for the measurement. The only value that this "mental exercise" has, is to give a LIMIT to which the exchange of energy can take place in. Since THIS is what we MEASURE WITH, we LOSE "lines on the metric", from this perspective. Now TRANSLATE and INTERPRET those "lines": time changes, or the frequencies that balance the energy exchange? [if E=hf measures energy without "time", then changes in energy would require only changes in "hf", also without time.]

biggrin.gif



regards,

T.Roc



This post has been edited by TRoc on Sep 20 2007, 09:24 PM


--------------------

I know Nothing. I looked all over to find it, but found it Nowhere. The funny thing is, it was right between 2 things, that I knew Everything about. It felt like forever, but really, it was no Time at all.

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TRoc
Posted: Sep 21 2007, 08:40 PM


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Hi all,



OK, we can "re-group" around the "response of the field".


Just for "argument's sake", we will treat the "input field" (light waves), and the "response field" (matter waves) in an "interference" experiment, as ONE system.


We want an answer that includes the source, the first slit, the slit wall: slit width and slit separation, the medium: state and statistical positions between atoms, and finally, the image on the screen: includes intensity, phase "fringe pattern".


It would seem that, either an "on the way" explanation, using the parameters of "detection", intensity and phase, would be sensible, or, possibly an "at the detector" explanation, that used the parameters of "the field". Some "translating" is in order.


At the start of the thread, I suggested "wave transforms" as a alternative to Fourier. Whatever we do, I agree with the idea, that we need MORE INPUT to truly understand (solve) this problem. More observers, more measurements, more data..


This seems similar enough with the concept of "protective measurements", or even just "extrapolation and inference" by reductionary logic. If the behavior of the interaction of light and matter, in the DSE set up, is VERY PREDICTABLE, and regular, then "inference" is NOT "guessing". If we repeat the experiment 1000 times, each time FROM A DIFFERENT FRAME, and we compile the results, we get a "snapshot" of the true, holistic-non-linear event. I believe this to be EQUIVALENT to the 'inverse' idea, that THROUGH the linear approach, ADDITIONAL dimensions will have to be added to "capture the essence".



We are fortunate to live in the "computer age". Modeling, based on theory, and its equations, is becoming a new "method" for Physics. There are quite a few different areas in which this is happening, which makes it a little harder to pursue. Not only can we learn from their successes, but from each different methods weakness, too. Again, we need to "line up" our parameters, so that our detector is giving the same measurements as we can calculate for the field. We need to be able to "transform" parameters: like frequency/velocity, intensity/cycle count, amplitude/transverse wavelength. We also need to be able to understand "re-radiation", the refractive index, direction change, polarization, apparent velocity change, and resonance of the relative frequencies, in a seamless way.



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

user posted image
Optical coherence tomography tomogram of a fingertip.

QUOTE
Optical coherence tomography (OCT) is an interferometric, non-invasive optical tomographic imaging technique offering millimeter penetration (approximately 2-3 mm in tissue) with micrometer-scale axial and lateral resolution. The technique was first demonstrated in 1991 with ~30µm axial resolution. Since then, OCT has achieved sub-micrometre resolution in 2001 due to introduction of wide bandwidth light sources (sources emitting wavelengths over a ~100 nm range). By now OCT has found its place as a widely accepted imaging technique, especially in ophthalmology, other biomedical applications and art conservation.



100nm, in the visible light band, is "equivalent" to 1/4 octave. The whole band, is from ~400nm to ~770nm; just less than a full octave, 2f. 1/4 distance in change of wavelength is equivalent to the "peak of the real phase", so they have a good comparison between the "movement~change in position", and the "center of that movement". The energy of that "pixel", or crossing of parameters (node) is easy to "isolate", by change in relative frequency. The frequency comb utilizes this idea, which is no more than an "imaginary" measuring tape, with lines based on "known" frequencies. By reducing the "unknown" to "within an octave" of the known, we are establishing a simple, logarithmic limit, based on 2. Every time we divide this space in half, we increase "resolution", down to the "single parameter". This is why RT can take "phase space", and divide it into 12 equal parts: when any 9 "divisions" are made, we end up with 3 parameters "sharing space" at a common junction. Conversely, if we have any 3 values, within an octave bandwidth (Nyquist), they will have 3 potential "alignments", that will change their "average position". Either we get the "peak" alignment", from the perfect phase match, or we get "walk off" to either direction; higher or lower than our "starting value".


If that starting value is a position, then we have "push and pull" as the force results. This can be followed by charge, magnetism, and gravity, as well as intensity, superposition, and constructive/destructive interference, and into Pauli exclusion principle/spin. The electron (node) will never be "phase aligned" with the "photon" (anti-node). This is a hint at the "pay off" of RT; breadcrumbs for the weary travelers to find their next meal, and sustaining the journey.


QUOTE
OCT is based on low-coherence interferometry.[4][5][6] In conventional interferometry with long coherence length (laser interferometry), interference of light occurs over a distance of meters. In OCT, this interference is shortened to a distance of micrometres, thanks to the use of broadband light sources (sources that can emit light over a broad range of frequencies). Light with broad bandwidths can be generated by using superluminescent diodes (superbright LEDs) or lasers with extremely short pulses (femtosecond lasers). White light is also a broadband source with lower powers.

Light in an OCT system is broken into two arms -- a sample arm (containing the item of interest) and a reference arm (usually a mirror). The combination of reflected light from the sample arm and reference light from the reference arm gives rise to an interference pattern, but only if light from both arms have traveled the "same" optical distance ("same" meaning a difference of less than a coherence length). By scanning the mirror in the reference arm, a reflectivity profile of the sample can be obtained (this is time domain OCT). Areas of the sample that reflect back a lot of light will create greater interference than areas that don't. Any light that is outside the short coherence length will not interfere. This reflectivity profile, called an A-scan contains information about the spatial dimensions and location of structures within the item of interest. A cross-sectional tomograph (B-scan) may be achieved by laterally combining a series of these axial depth scans (A-scan). En face imaging (C-scan) at an acquired depth is possible depending on the imaging engine used.



QUOTE
In time domain OCT the pathlength of the reference arm is translated longitudinally in time. A property of low coherence interferometry is that interference, i.e. the series of dark and bright fringes, is only achieved when the path difference lies within the coherence length of the light source. This interference is called auto correlation in a symmetric interferometer (both arms have the same reflectivity), or cross-correlation in the common case. The envelope of this modulation changes as pathlength difference is varied, where the peak of the envelope corresponds to pathlength matching.

..

..where Δν represents the spectral width of the source in the optical frequency domain, and ν0 is the centre optical frequency of the source. In equation (2), the Gaussian envelope is amplitude modulated by an optical carrier. The peak of this envelope represents the location of sample under test microstructure, with an amplitude dependent on the reflectivity of the surface. The optical carrier is due to the Doppler effect resulting from scanning one arm of the interferometer, and the frequency of this modulation is controlled by the speed of scanning. Therefore translating one arm of the interferometer has two functions; depth scanning and a Doppler-shifted optical carrier are accomplished by pathlength variation. In OCT, the Doppler-shifted optical carrier has a frequency expressed as  User posted image  
where ν0 is the central optical frequency of the source, vs is the scanning velocity of the pathlength variation, and c is the speed of light.

The axial and lateral resolutions of OCT are decoupled from one another; the former being an equivalent to the coherence length of the light source and the latter being a function of the optics.



QUOTE
In frequency domain OCT the broadband interference is acquired with spectrally separated detectors (either by encoding the optical frequency in time with a spectrally scanning source or with a dispersive detector, like a grating and a linear detector array).
..
This feature improves imaging speed dramatically, while the reduced losses during a single scan improve the signal to noise proportional to the number of detection elements. The parallel detection at multiple wavelength ranges limits the scanning range, while the full spectral bandwidth sets the axial resolution.



QUOTE
SEFD-OCT extracts spectral information by distributing different optical frequencies onto a detector stripe (line-array CCD or CMOS) via a dispersive element (see Fig. 4). Thereby the information of the full depth scan can be acquired within a single exposure. However, the large signal to noise advantage of FD-OCT is reduced due the lower dynamic range of stripe detectors in respect to single photosensitive diodes, resulting in an SNR (signal to noise ratio) advantage of ~10 dB at much higher speeds. The drawbacks of this technology are found in a strong fall-off of the SNR, which is proportional to the distance from the zero delay and a sinc-type reduction of the depth dependent sensitivity because of limited detection linewidth. (One pixel detects a quasi-rectangular portion of an optical frequency range instead of a single frequency, the Fourier-transform leads to the sinc(z) behavior). Additionally the dispersive elements in the spectroscopic detector usually do not distribute the light equally spaced in frequency on the detector, but mostly have an inverse dependence. Therefore the signal has to be resampled before processing, which can not take care of the difference in local (pixelwise) bandwidth, which results in further reduction of the signal quality.



QUOTE
TEFD-OCT tries to combine some of the advantages of standard TD and SEFD-OCT. Here the spectral components are not encoded by spatial separation, but they are encoded in time. The spectrum either filtered or generated in single successive frequency steps and reconstructed before Fourier-transformation. By accommodation of a frequency scanning light source (i.e. frequency scanning laser) the optical setup (see Fig. 5) becomes simpler than SEFD, but the problem of scanning is essentially translated from the TD-OCT reference-arm into the TEFD-OCT light source. Here the advantage lies in the proven high SNR detection technology, while swept laser sources achieve very small instantaneous bandwidths (=linewidth) at very high frequencies (20-200 kHz). Drawbacks are the nonlinearities in the wavelength, especially at high scanning frequencies. The broadening of the linewidth at high frequencies and a high sensitivity to movements of the scanning geometry or the sample (below the range of nanometers within successive frequency steps)
QUOTE
A multiresolution analysis (MRA) or multiscale approximation (MSA) is the design method of most of the practically relevant discrete wavelet transforms (DWT) and the justification for the algorithm of the fast wavelet transform (FWT). It was introduced in this context in 1988/89 by Stephane Mallat and Yves Meyer and has predecessors in the microlocal analysis in the theory of differential equations (the ironing method) and the pyramid methods of image processing as introduced in 1981/83 by Peter J. Burt, Edward H. Adelson and James Crowley.



QUOTE
A multiresolution analysis of the space  consists of a sequence of nested subspaces  User posted image  
that satisfies certain self-similarity relations in time/space and scale/frequency, as well as completeness and regularity relations.

Self-similarity in time demands that each subspace Vk is invariant under shifts by integer multiples of 2-k. That is, for each _ there is a  _with _.

Self-similarity in scale demands that all subspaces _ are time-scaled versions of each other, with scaling respectively dilation factor 2l-k. I.e., for each _ there is a _ with _. If f has limited support, then the support of g gets smaller, the resolution of the l-th subspace is higher than the resolution of the k-th subspace.

Regularity demands that the model subspace V0 be generated as the linear hull (algebraically or even topologically closed) of the integer shifts of one or a finite number of generating functions φ or _. Those integer shifts should at least form a frame for the subspace , which imposes certain conditions on the decay at infinity. The generating functions are also known as scaling functions or father wavelets. In most cases one demands of those functions to be piecewise continuous with compact support.

Completeness demands that those nested subspaces fill the whole space, i.e., their union should be dense in , and that they are not too redundant, i.e., their intersection should only contain the zero element.

(emphasis added; see link for full equations)


RT meets all these requirements.


QUOTE
Important conclusions
In the case of one continuous (or at least with bounded variation) compactly supported scaling function with orthogonal shifts, one may make a number of deductions. The proof of existence of this class of functions is due to Ingrid Daubechies.
..

..one can see that the space user posted image ,  which is defined as the linear hull of the mother wavelets integer shifts, is the orthogonal complement to V0 inside V1. Or put differently, V1 is the orthogonal sum of W0 and V0. By self-similarity, there are scaled versions Wk of W0 and by completeness one has  user posted image
QUOTE
In mathematics, a wavelet series is a representation of a square-integrable (real- or complex-valued) function by a certain orthonormal series generated by a wavelet. This article provides a formal, mathematical definition of an orthonormal wavelet and of the integral wavelet transform.



QUOTE
..with convergence of the series understood to be convergence in the norm. Such a representation of a function f is known as a wavelet series. This implies that an orthonormal wavelet is self-dual.



QUOTE
Unlike the Fourier transform, which is an integral transform in both directions, the wavelet series is an integral transform in one direction, and a series in the other, much like the Fourier series.

The canonical example of an orthonormal wavelet, that is, a wavelet that provides a complete set of basis elements for L^2® , is the Haar wavelet.


User posted image CLICK for larger image


Again, a picture is worth a thousand words. But you have to ask a question to begin the process of "putting it into words", and the chances are, that you'll have to ask many questions to get the whole answer.


Besides what it is intended for, I find that this Haar wavelet TOTALLY visualizes my PRIMARY premise, the fundamental conclusion of RT. We ARE NOT measuring a "fundamental value" of ONE to ONE ratio. If the "real part" of this fundamental wave has an amplitude of +1, and the "imaginary part" has -1, the current system "reduces" this value to ONE, and just counts that.


If the "amplitude", or movement through the curve (angular momentum~frequency in 3D helice) is NOT "primary" or "fundamental", as the "one wavelength" = "the distance from zero to one" model suggests, then what is? One wavelength MUST have several parts, to accurately describe. It is not the fundamental "starting point". If we just go one step further, into the "binary-like" (& bifurcation) model of the "Node and Anti-node" relationship, where any "one" must be surrounded (asynchronously bounded) by two of the other, as a set, or Triad.


RT gives a simple alternative to the "variation in 2 dimensions" of the "zero point" of the current model, as shown in the above diagram. On one axis, we have the fluctuation (curve) between "-1 and +1", and on the other (orthogonal) axis, from "zero to +1". Can you see the QUESTION, begging to be answered, just to the LEFT of this "zero starting point"?


It suggests that we are taking a "linear snip" out of a "non-linear process". The "change in time" can be measured from zero, but we are NOT actually measuring from "Time Zero", which we have defined in the framework of Science, as "the big bang", or the "big bounce". In all experiments, "start time" is a fixed, preferred reference point", to which "end time" is absolutely dependent upon. The "snip" is an image in an interval of time; no matter HOW you magnify this image, its ratio to the "flow of time" will not change.


The holistic view only says, "what is good for the observer (sink) is good for the sender (source)", which means any "Doppler shift" experienced by one, will be inversely experienced by the other. So, if time is "contracted" inversely, then the "rhythm" doesn't change. [ 2:1 = 4:2, etc] The only "meaningful" interpretation, is to take the RATE of the signal (cyclic) difference, which stands "outside of time" while superposed in space. That is, the beat-frequency is locally dependent (interaction zone of integer wavelengths) on the input signals, but independent of their source places OR times. The two signals, within the "time-frame" of the experiment, are ALWAYS coherent, on at least one axis.


Look at the Haar wavelet diagram again, and change the scale. From (x axis) "0 to 1" will get replaced with "from 1 to 2", and the FUNDAMENTAL change of "ONE UNIT" does not change. What does change, is the relationship of the "amplitude" to the "movement in distance": they become "synchronized" into a "discreet value". This is also equivalent to saying "from the center, out", starting from "1/2" and moving asynchronously to zero, in one direction, and to one, in the other. RT would say, "from 1.5 to 1, and from 1.5 to 2", again, those are the same intervals as the current model, but with different (real) values.


One and Two have to be understood in Resonant terms: they are the Fundamental ratio. They are the "book ends" that contain a "hinge point" like "positive and negative", or "yin/yang", "forward/backward", between dualistic terms. There is only ONE other ratio, that supersedes it, and that is of course, 1:1. That ratio is not differentiable, and 1:2 only offers "slightly better" chance of detecting the difference of less than one. You are starting, and ending ALL measurements on these "nodes". What happens "in between" is the "anti-node", or peak change in energy; simply put, a value that is NEITHER of the inputs, but EXACTLY their mean. Note that this is a limit, because, as we go higher than 2, we must use "harmonic mean", instead of arithmetic mean. The relationships between arithmetic, geometric, and harmonic mean were laid out by Pythagoras, over 2000 years ago. When you understand wave resonance, you will find that this is the logical equivalent to the Uncertainty Principle. There will be a "difference in location" of the point determined by geometric mean (spacial coherence), and the point determined by harmonic mean (frequency coherence).



The Wavelet Tutorial
by
ROBI POLIKAR


OVERVIEW: WHY WAVELET TRANSFORM?

FUNDAMENTALS: THE FOURIER TRANSFORM AND THE SHORT TERM FOURIER TRANSFORM

MULTIRESOLUTION ANALYSIS & THE CONTINUOUS WAVELET TRANSFORM

MULTIRESOLUTION ANALYSIS: THE DISCRETE WAVELET TRANSFORM


This is a must read, for those seeking "new Physics".



regards,

T.Roc


This post has been edited by TRoc on Sep 21 2007, 09:08 PM


--------------------

I know Nothing. I looked all over to find it, but found it Nowhere. The funny thing is, it was right between 2 things, that I knew Everything about. It felt like forever, but really, it was no Time at all.

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