andrewgray
30th January 2007 - 08:37 PM
QUOTE
If the detention [detection] period of electron in DSE apparatus remains sufficiently low with compare to the average time interval between consecutive electrons comming into apparatus, we can say with corresponding probability, just the single electron exists in the apparatus during experiment.
Zephir,
Here is where you are wrong. There are no electron detections. JUST FILM DOT FORMATIONS!!!!! Let me repeat so you do not read over this:
JUST FILM DOT FORMATIONS. NO ELECTRON DETECTIONS.Again, one-electron-at-a-time current in a 100 KeV electron microscope implies that the electrons would spend about
10 ns in the microscope. This corresponds to about 16 picoamps, or to about 100,000,000 electrons per second.
So, if 10 dots per second are seen forming ON THE FILM, then this implies that about
10,000,000 electrons are striking the film each time a dot is formed.
How can this be?
There is a threshold electron-flux for film dot formation, just like there is a threshold intensity for light to produce dots on film! (Or like there is a threshold intensity to produce dots in a digital camera, etc ). Imagine many of the electrons striking the film and doing NOTHING to the silver bromide crystals! Enough electrons must strike near a crystal defect of the silver bromide lattice, or nothing happens! No dots are formed after the development process! A silver bromide crystal with no crystal defects is not film-dot sensitive at all! 10 quadrillion electrons could strike this crystal, and NOTHING would happen.
Moreover, even if the experimenter
measures (not regulates) the 16 picoamp current, he could not tell the difference between:
1) one-electron-at-a-time (one electron each 10 ns)
2) two-electrons-at-a-time (two electrons each 20 ns)
3) 100 electrons-at-a-time (100 electrons each 1000 ns)
In each case, the pico ammeter would measure the 16 picoamps, as it averages the current flow.
But it can say nothing about how it was regulated, perhaps like case 1), case 2), or perhaps like case 3).
And since high voltage "cross-the-gap" current tends to surge (like lightning from a thunderstorm), it is much more likely that the microscope is sending out surges of electrons instead of one-electron-at-a-time. This allows for multiple electron interaction to explain the interference pattern. Again, "one-electron-at-a-time" claims are nonsense. And "how-can-it-interfere-with-itself" questions are nonsense to a higher degree.
QUOTE (->
| QUOTE |
| If the detention [detection] period of electron in DSE apparatus remains sufficiently low with compare to the average time interval between consecutive electrons comming into apparatus, we can say with corresponding probability, just the single electron exists in the apparatus during experiment. |
Zephir,
Here is where you are wrong. There are no electron detections. JUST FILM DOT FORMATIONS!!!!! Let me repeat so you do not read over this:
JUST FILM DOT FORMATIONS. NO ELECTRON DETECTIONS.Again, one-electron-at-a-time current in a 100 KeV electron microscope implies that the electrons would spend about
10 ns in the microscope. This corresponds to about 16 picoamps, or to about 100,000,000 electrons per second.
So, if 10 dots per second are seen forming ON THE FILM, then this implies that about
10,000,000 electrons are striking the film each time a dot is formed.
How can this be?
There is a threshold electron-flux for film dot formation, just like there is a threshold intensity for light to produce dots on film! (Or like there is a threshold intensity to produce dots in a digital camera, etc ). Imagine many of the electrons striking the film and doing NOTHING to the silver bromide crystals! Enough electrons must strike near a crystal defect of the silver bromide lattice, or nothing happens! No dots are formed after the development process! A silver bromide crystal with no crystal defects is not film-dot sensitive at all! 10 quadrillion electrons could strike this crystal, and NOTHING would happen.
Moreover, even if the experimenter
measures (not regulates) the 16 picoamp current, he could not tell the difference between:
1) one-electron-at-a-time (one electron each 10 ns)
2) two-electrons-at-a-time (two electrons each 20 ns)
3) 100 electrons-at-a-time (100 electrons each 1000 ns)
In each case, the pico ammeter would measure the 16 picoamps, as it averages the current flow.
But it can say nothing about how it was regulated, perhaps like case 1), case 2), or perhaps like case 3).
And since high voltage "cross-the-gap" current tends to surge (like lightning from a thunderstorm), it is much more likely that the microscope is sending out surges of electrons instead of one-electron-at-a-time. This allows for multiple electron interaction to explain the interference pattern. Again, "one-electron-at-a-time" claims are nonsense. And "how-can-it-interfere-with-itself" questions are nonsense to a higher degree.
to throttle/collimate the stream of electrons emanated by the cathode by the system of sufficiently small nozzles/holes
Zephir, I do not believe that this can be done. The beam strikes the film and produces a pattern that is typically a few micrometers across. Are you suggesting aligning a "hole nozzle", on the micrometer scale, in line with the experiment to throttle the entire incident beam? Get onto Google or the physics archive and show me where this is done. I have seen "donuts" that are put in the electron beam and projected onto the film, but I have not seen throttling holes aligned perfectly to reduce the electron flux of the entire experiment.
And even if you could put a micrometer scale hole in a plate that was put in line with the experiment, it would have to be a conductor so one could read the current (amperage) coming from it (otherwise, you would not know how many electrons it blocked). But such a conductive plate (with some sort of voltage) would seriously alter the electron beam, ruining the experiment.
Andrew Gray
Getting us back to the Real World.
Zephir
30th January 2007 - 08:52 PM
QUOTE (andrewgray+Jan 30 2007, 11:37 PM)
...that the electrons would spend about 10 ns in the microscope. This corresponds to about 16 picoamps...
And? What's the problem? Did you ever see for example the beta-ray scintillation?
QUOTE (andrewgray+Jan 30 2007, 11:37 PM)
...In each case, the pico ammeter would measure the 16 picoamps...
Where did you read this?
QUOTE (andrewgray+Jan 30 2007, 11:37 PM)
...but I have not seen throttling holes aligned perfectly to reduce the electron flux of the entire experiment...
Such hole is a part of each electron microscope, which was used as an apparatus for the DSE. Of course it's not aligned perfectly, the throttling doesn't requires to be at all.
andrewgray
31st January 2007 - 02:48 AM
Zephir,
There is no problem with the 16 pico amps. But the definition of an amp is charge(coulombs) per second. So
1e/10ns = 2e/20ns = 100e/1000ns = 16 picoamps
I did not read this, I calculated it. Do you think that the picoammeter would flash the different pulses every few nanoseconds or so, or just give the average current?
So if there is a throttling hole in an electron microscope, can one tell how many electrons were removed?
Andrew Gray
Zephir
31st January 2007 - 09:16 AM
QUOTE (andrewgray+Jan 31 2007, 05:48 AM)
So 1e/10ns = 2e/20ns = 100e/1000ns = 16 picoamps
But 10 ns is the retention time of electron in DSE apparatus, not the delay (time difference) between consecutive electrons. This value has nothing to do with the electron current on the electron screen (which in turn has nothing to with the cathode current...).
andrewgray
31st January 2007 - 11:56 PM
QUOTE
But 10 ns is the retention time of electron in DSE apparatus, not the delay (time difference) between consecutive electrons. This value has nothing to do with the electron current on the electron screen (which in turn has nothing to with the cathode current...).
Zephir,
Ok, I agree with this. The main point is that there is no way to know when a group of electrons comes off the electron gun tip, or how many come off.
Even if you had a femtoammeter, the drift velocities are so tiny, and the circuits are so mushy, you have no chance of one-electron resolution at the electron gun tip. Even if you somehow had this resolution at the input to the gun ahead of the tip, you still cannot tell what happened at the tip. There is such an enormous reservoir of electrons in all the wires and fixtures of the apparatus, it is hopeless to think that you could measure one-at-a-time electron expulsion at the tip. If you had 10 femtoamps flowing into the gun ahead of the tip, then the drift time for a statistical electron to get to the tip is probably thousands of years. Just figure the drift velocity and see for yourself. This means that what happens in one part of a circuit is not immediately connected to what happens somewhere else. Think about Avagodro's number worth of electrons in the wires and fixtures.
Again, the analogy is having a very accurate one-water-droplet-at-a-time source at one end of Lake Superior, and then claiming that one-water-droplet-at-a-time was coming out at the other end of Lake Superior.
Andrew Gray
Getting Back to the Real World
Zephir
1st February 2007 - 10:23 PM
QUOTE (andrewgray+Feb 1 2007, 02:56 AM)
...The main point is that there is no way to know when a group of electrons comes off the electron gun tip, or how many come off....
At first, the electrons are mutually repulsing particles, here is no reason to consider some sort of particle aggregation. The repelling force of electrons is easily observable.

QUOTE (andrewgray+Feb 1 2007, 02:56 AM)
...you have no chance of one-electron resolution at the electron gun tip.....
Like I've said , the number of electrons at the electron gun tip plays no role in frequency of electrons in the DSE. It's evident, you cannot even imagine, how the electron nozzle is working... Welcome back to the Real World..

After all, even if we'd suppose, some the cluster of electrons can move like the single particle, how can you derive the wave interference pattern from such assumption?
andrewgray
2nd February 2007 - 08:40 PM
Zephir,
I see what you are saying about the electron gun nozzle. I am just saying that it is impossible to do.
I am saying that the likeliest scenario is that the electrons surge out of the electron-gun's tip in a group. This is like other "cross-the-gap" high voltage phenomena.
I am saying that a "nozzle" would not be able to convert a group/pulse of electrons down to just one electron by itself.
Yes, easy to imagine.
No, not possible to do.
I am saying that what is easy to imagine might be extremely difficult to do in the Real World.
One is most likely going to end up with a group of electrons in each pulse, so that electron interference will have plenty of electrons to interfere with each other. "One-at-a-time" quantum interference is nonsense.
Andrew
Zephir
3rd February 2007 - 12:24 AM
QUOTE (andrewgray+Feb 2 2007, 11:40 PM)
I am saying that what is easy to imagine might be extremely difficult to do in the Real World. "One-at-a-time" quantum interference is nonsense.
OK, but WHY? Just because you've spent some time with the quite different model?
This is not enough for relevant reasoning. You should propose the mechanism of such electron grouping at first. At second, you should demonstrate, how such grouping can explain the DSE patterns.
If you don't like electron guns and electron beam throttling by nozzles, you can bring up a wisp of potassium salt and repeat the DSE with the electrons, forming the beta rays as the result of potassium 40K beta-decay, so you can imagine the experimental arrangement of "One-at-a-time" quantum interference easily.
andrewgray
4th February 2007 - 06:03 AM
QUOTE
You should propose the mechanism of such electron grouping at first. At second, you should demonstrate, how such grouping can explain the DSE patterns.
Zephir,
I have done so. But we shall do so here.
We have proposed that electrons pulse their electric fields ON and OFF.
The electrons group together because high voltage "cross-the-gap" currents almost always surge. The pulsating electrons congregated at the tip of the gun where the voltage got very high, then they surged out as a coherent pulse. They all had to be in the ON state when they exited or they would not have exited at all.
So we now have a coherent pulse of electrons traveling down the microscope, through the magnetic focus, and towards the positively charged wire that will bend them towards each other.
The wire, which cuts the group in half, forces the electrons to cross over each other. Where each crossing takes place, if the electrons are OFF, then they will continue on their way to the film and form a maxima. If the electrons are ON where they cross, then there is a tremendous repulsion, and the electrons will veer off their path and a minima is formed where no electrons will go. Here is a more detailed description:
www.modelofreality.org/Sect5_7.html (cut & paste to a browser)
QUOTE (->
| QUOTE |
| You should propose the mechanism of such electron grouping at first. At second, you should demonstrate, how such grouping can explain the DSE patterns. |
Zephir,
I have done so. But we shall do so here.
We have proposed that electrons pulse their electric fields ON and OFF.
The electrons group together because high voltage "cross-the-gap" currents almost always surge. The pulsating electrons congregated at the tip of the gun where the voltage got very high, then they surged out as a coherent pulse. They all had to be in the ON state when they exited or they would not have exited at all.
So we now have a coherent pulse of electrons traveling down the microscope, through the magnetic focus, and towards the positively charged wire that will bend them towards each other.
The wire, which cuts the group in half, forces the electrons to cross over each other. Where each crossing takes place, if the electrons are OFF, then they will continue on their way to the film and form a maxima. If the electrons are ON where they cross, then there is a tremendous repulsion, and the electrons will veer off their path and a minima is formed where no electrons will go. Here is a more detailed description:
www.modelofreality.org/Sect5_7.html (cut & paste to a browser)
If you don't like electron guns and electron beam throttling by nozzles, you can bring up a wisp of potassium salt and repeat the DSE with the electrons, forming the beta rays as the result of potassium 40K beta-decay, so you can imagine the experimental arrangement of "One-at-a-time" quantum interference easily.
Zephir,
I wish you would attempt this experiment. I can see that this would create very low electron flow rates. I predict that you would have no coherency, and that you would not be able to get an interference pattern from this condition. In my opinion, "one-electron-at-a-time" matter will not create an interference pattern, as matter cannot cancel itself out like a wave can.
janrinze
27th April 2007 - 04:36 PM
QUOTE (andrewgray+Feb 4 2007, 06:03 AM)
Zephir,
I wish you would attempt this experiment. I can see that this would create very low electron flow rates. I predict that you would have no coherency, and that you would not be able to get an interference pattern from this condition. In my opinion,
"one-electron-at-a-time" matter will not create an interference pattern, as matter cannot cancel itself out like a wave can.
That is exactly what should happen according to QM.
It should not matter if the electrons come as a group or just as a single electron.
If it would matter then there should be some form of 'memory' in the entire system that accounts for all the electrons that have passed either slit.
Just my thoughts.
Jan Rinze.
janrinze
27th April 2007 - 04:49 PM
Something that does bother me with the 2 slit experiment is that even thoug we cannot detect the route that one electron had taken withouth disturbing the interference pattern, we should be able to determine the momentum of the electron when it arrives at the detection screen.
If the momentum at the detection screen (the interference pattern has not been disturbed by measurement) can be determined sufficiently accurate we can deduce from that momentum te route that specific electron has taken. Since the momentum should be in line with either of the slits.
So would this be possible or would this result in a dissapearance of the interference pattern?
Of all the experiments I have read about the measurement of either the momentum or the location of the particle (electron here) is done before the forming of an interference pattern. (that is in time as well as in location) None have tried to measure it after the interference pattern has formed. (sufficiently far away from the two slits)
It may be that I am far off the chart here but it keeps lingering in my mind..
Jan Rinze.
StevenA
27th April 2007 - 07:03 PM
Andrew,
I like the idea you're presenting though this would seem to imply the interference pattern should be alterable, at least to a minor degree, by increasing or decreasing the average current through the apparatus.
If we assume the electrons build up enough potential to break down some spacial barrier and flow as a group (possibly until some equalibrium is restored), it would seem that by greatly increasing the current, more electrons should be available for such an action, when it occurs (even if this only provides a relatively minor increase in the "per packet" number of electrons, depending upon how short such a "window" would be). That increase should result in the appearance of a stronger statistical coupling and a dependence of the characteristic wavelength upon the density of electrons (though their velocity/inertia would also influence this).
I do agree that without some very novel measurement techniques, accurately measuring current transients associated with the motion of a single electron wouldn't be realistically possible for current technology (I haven't dug in to this specifically but for such short time periods, it seems highly unlikely such precise current measurements would be possible ... you have the equivalent of the uncertainty principle, but realistically scaled up quite a bit when working with larger mechanical systems).
I don't know if your view is correct or not but it's a very interesting consideration.
Zephir
27th April 2007 - 09:05 PM
QUOTE (janrinze+Apr 27 2007, 07:36 PM)
It should not matter if the electrons come as a group or just as a single electron
The electron can be interpreted as a dense cluster of many particles, controlled by the forces of surface tension (of both positive, both negative curvatures).

From such perspective the Andrew's insight has a certain meaning, but the DSE definitely doesn't require the presence of more electrons in the DSE apparatus at the same moment.
suntwin
14th September 2007 - 04:29 PM
QUOTE (dissturbbed+Jan 18 2007, 10:09 PM)
...is it the act of observing "consciousness"changing the wave to a particle or is it the detector causing some kind of interference with the wave?.
Can't help feeling this has strayed a bit from Dissturbed's original question...
I too am a newbie layperson, so apologies if I've got this wrong. My understanding is that the Copenhagen Interpretation really
does assert that the collapse of the wave function into an elementary particle is caused directly by the effect of an observing
consciousness. Not surprisingly, this is a very controversial idea!
Does anyone know of any experimental evidence which either confirms or contradicts this explicit interpretation. For example, has anyone done an experiment where:
1. The interference pattern/clumping patterns are recorded for a series of separate double-slit experiments
2. During the same series of experiments a detector records the passage of particles through one or other of the slits
3. Half of the slit-based recordings from point 2 (above) are destroyed without anyone ever being consciously aware of their content
4. The other half of the slit-based recordings are "observed"
5. The recorded patterns are then checked to see if those which have been "observed" show two bands of clumping whereas the "unobserved" show interference.
Could this experiment possibly work? Just a thought
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