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• Re: [bell_bohm] Re: [Physics_Frontier] Questions About "Three Slit Experiment"

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• I m not seeing what the difficulty is. In the dBB interpretation, the wave function takes all three slits into account and defines the usual probability
Message 1 of 6 , Nov 17, 2011
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I'm not seeing what the difficulty is.  In the dBB interpretation, the wave function takes all three slits into account and defines the usual probability spread on the screen.  The actual photon only goes through one of the slits; but because its behavior is determined by the wave function, it hits the screen at a point determined by the wave function's interference pattern.

--
Jonathan "Dataweaver" Lang
• Another comment further on:   Florian: Total destructive interference occurs in the 3-slit experiment by the cancellation of the wave amplitudes from the 3
Message 2 of 6 , Nov 17, 2011
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Another comment further on:

"Florian: Total destructive interference occurs in the
3-slit experiment by the cancellation of the wave
amplitudes from the 3 slits. The cancellation occurs
at the amplitude level if the path difference of 2
adjacent slits is 1/3 of the wavelength."

Dennis

From: Dennis May <dennislmay@...>
To: "Physics_Frontier@yahoogroups.com" <Physics_Frontier@yahoogroups.com>; Bell Bohm <bell_bohm@yahoogroups.com>
Sent: Thursday, November 17, 2011 1:01 PM
Subject: [bell_bohm] Re: [Physics_Frontier] Questions About "Three Slit Experiment"

From the 1st comment at the bottom of the link:

"The conclusion should be: yes all radiation is able to
split and travel along all different routes through the
quantum vacuum lattice as long as these routes have
the same length to be able to interfere with itself."

I think this answers my question.

Dennis

From: Dennis May <dennislmay@...>
To: Bell Bohm <bell_bohm@yahoogroups.com>; Physics Frontier <physics_frontier@yahoogroups.com>
Sent: Thursday, November 17, 2011 10:46 AM
Subject: [Physics_Frontier] Questions About "Three Slit Experiment"

http://www.nature.com/news/2010/100722/full/news.2010.371.html

I am trying to understand the de Broglie - Bohm explanation of the
three slit experiment.  A causal Google search did not reveal a direct
discussion of this topic.  I will continue looking but does anyone
have something to offer on this topic?

Dennis May

• I believe my questions about the Three Slit Experiment came about because upon reading about it from several sources some approached it incorrectly implying
Message 3 of 6 , Nov 17, 2011
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I believe my questions about the "Three Slit Experiment" came about because
implying there was more to the experiment than there actually was.

Here is another comment futher in the stack:

"I came across this article summary and could not understand what it was all about. I went and got the Science original article and went over it and indeed it seemed to be saying that photons only went through two holes in a diffraction gating to interfere with themselves (not each other) in creating the diffraction pattern, and that this is the meaning of Born's rule. This is no statement of Born's Hypothesis that I ever read before, and I have read many restatements of it. It seems to be a modern attempt to restate the rule with the wave envelope (amplitude summation) replaced with just two components – the wave and its conjugate – and the squaring of the amplitude to get intensity (the probability) being just the multiplication of the two elements. This will not work in a multitude of circumstances. For example, one could send single photons at a 50,000 slit diffraction grating and observe how sharp the diffraction line is. I have no doubt that the line that builds up statistically would be as sharp as one produced by a regular beam of photons. The only requirement would be that the coherence length of the photons be long enough and that they not overlap. Not convinced? What about Feynman's path integral method? This should apply to photons just as any other particle/wave object. It would require many back and forth (instantaneous) "determinations" of the probability of any path the photon might take – including through the mask, rather than just through the holes, all summed up and THEN squared for probability. What happens to Feynman's "rule" if this new formalism were true?"

Dennis

From: Dennis May <dennislmay@...>
To: "bell_bohm@yahoogroups.com" <bell_bohm@yahoogroups.com>; "Physics_Frontier@yahoogroups.com" <Physics_Frontier@yahoogroups.com>
Sent: Thursday, November 17, 2011 1:12 PM
Subject: Re: [bell_bohm] Re: [Physics_Frontier] Questions About "Three Slit Experiment"

Another comment further on:

"Florian: Total destructive interference occurs in the
3-slit experiment by the cancellation of the wave
amplitudes from the 3 slits. The cancellation occurs
at the amplitude level if the path difference of 2
adjacent slits is 1/3 of the wavelength."

Dennis

From: Dennis May <dennislmay@...>
To: "Physics_Frontier@yahoogroups.com" <Physics_Frontier@yahoogroups.com>; Bell Bohm <bell_bohm@yahoogroups.com>
Sent: Thursday, November 17, 2011 1:01 PM
Subject: [bell_bohm] Re: [Physics_Frontier] Questions About "Three Slit Experiment"

From the 1st comment at the bottom of the link:

"The conclusion should be: yes all radiation is able to
split and travel along all different routes through the
quantum vacuum lattice as long as these routes have
the same length to be able to interfere with itself."

I think this answers my question.

Dennis

From: Dennis May <dennislmay@...>
To: Bell Bohm <bell_bohm@yahoogroups.com>; Physics Frontier <physics_frontier@yahoogroups.com>
Sent: Thursday, November 17, 2011 10:46 AM
Subject: [Physics_Frontier] Questions About "Three Slit Experiment"

http://www.nature.com/news/2010/100722/full/news.2010.371.html

I am trying to understand the de Broglie - Bohm explanation of the
three slit experiment.  A causal Google search did not reveal a direct
discussion of this topic.  I will continue looking but does anyone
have something to offer on this topic?

Dennis May

• I don t believe there ever was a difficulty - I was just having a hard time digesting some of the incorrect or misleading explanations from the assorted
Message 4 of 6 , Nov 17, 2011
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I don't believe there ever was a difficulty - I was just having a hard time
digesting some of the incorrect or misleading explanations from the assorted
science  reporters.

Thanks,

Dennis

From: Jon Lang <dataweaver@...>
To: bell_bohm@yahoogroups.com
Cc: "Physics_Frontier@yahoogroups.com" <Physics_Frontier@yahoogroups.com>
Sent: Thursday, November 17, 2011 1:09 PM
Subject: Re: [bell_bohm] Re: [Physics_Frontier] Questions About "Three Slit Experiment"

I'm not seeing what the difficulty is.  In the dBB interpretation, the wave function takes all three slits into account and defines the usual probability spread on the screen.  The actual photon only goes through one of the slits; but because its behavior is determined by the wave function, it hits the screen at a point determined by the wave function's interference pattern.

--
Jonathan "Dataweaver" Lang

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