Double slit and wave particle duality

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Discussion Overview

The discussion revolves around the double slit experiment and its implications for wave-particle duality in quantum mechanics. Participants explore the nature of measurement in this context, examining how different interpretations of the experiment can lead to varying conclusions about the behavior of light and electrons.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Technical explanation

Main Points Raised

  • Some participants assert that there is no measurement method that reveals both wavelike and particlelike behavior simultaneously.
  • Others argue that the double slit experiment demonstrates clear wavelike behavior with light, while pointlike behavior may only be observed at extremely low frequencies.
  • It is noted that when the double slit experiment is conducted with electrons, wavelike behavior emerges from a large number of measurements, but each individual measurement exhibits particlelike locality.
  • Some participants clarify that the wave-like behavior observed in electron probability distributions does not imply that the electrons themselves behave as waves.
  • One participant mentions that Bohmian mechanics provides a framework for understanding the double slit experiment, distinguishing between the guiding wave and the electrons themselves.
  • There is a sentiment expressed that attempts to rationalize quantum mechanics to fit every inquiry may be futile, suggesting that "It's quantum mechanics" suffices as an explanation.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the interpretation of the double slit experiment, with multiple competing views regarding the nature of wave-particle duality and the implications of measurement methods.

Contextual Notes

Participants highlight the complexity of interpreting results from the double slit experiment, noting the dependence on definitions of wave and particle behavior, as well as the limitations of measurement techniques in capturing both properties simultaneously.

Isaac0427
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rootone said:
There is no measurement method in which they display both wavelike and point like behavior simultaneously.
Just for my knowledge, not to confuse the OP, why would you say, for example, the double slit experiment does not show both of these properties in one measurement method?

[Mentors' more: this thread was forked off from another thread]
 
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Isaac0427 said:
Just for my knowledge, not to confuse the OP, why would you say, for example, the double slit experiment does not show both of these properties in one measurement method?
The usual double slit experiment very clearly demonstrates wavelike behaviour with light.
I guess you might see point like behaviour at extremely low frequencies though I'm not sure if it that would be too low to actually measure anything.
 
rootone said:
The usual double slit experiment very clearly demonstrates wavelike behaviour with light.
When the experiment is run with electrons, though, you get wavelike behavior from a large number of single-electron measurements over time, but particlelike locality with each single-electron measurement.
 
Isaac0427 said:
When the experiment is run with electrons, though, you get wavelike behavior from a large number of single-electron measurements over time
You get wave-like behavior in the probability of an electron landing at any particular location. That's not the same thing as saying that the electrons themselves are behaving like waves.

Bohemian mechanics works just fine to explain the double-slit experiment, and it clearly distinguishes between the wave and the electrons; the wave steers the electrons to produce the observed many-electron patterns.
 
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Nugatory said:
You get wave-like behavior in the probability of an electron landing at any particular location. That's not the same thing as saying that the electrons themselves are behaving like waves.

Bohemian mechanics works just fine to explain the double-slit experiment, and it clearly distinguishes between the wave and the electrons; the wave steers the electrons to produce the observed many-electron patterns.
But we are just chasing the same old cart down the road if we think we need to justify ourselves to make these things fit every person who wants to know what's 'really' going on. "It's quantum mechanics" is the only answer.
 
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