What is causing destructive interference in double slit experiment?

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Discussion Overview

The discussion revolves around the phenomenon of destructive interference observed in the double slit experiment, particularly focusing on the nature of the wave function and the behavior of particles like electrons and photons. Participants explore the implications of quantum mechanics, wave-particle duality, and the interpretation of interference patterns.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • Some participants question what is meant by "destructive interference" when discussing single electrons, asking if the electron splits into two waves when passing through the slits.
  • Others argue that the wave function, as described by the Schrödinger equation, represents the probability of where an electron may be detected, with zero probability at points of destructive interference.
  • One participant suggests that the wave model is a semi-classical interpretation, referencing the de Broglie matter wave hypothesis.
  • There is a discussion about the nature of the wave function, with some asserting it is a single wave rather than two interacting waves, and questioning the implications of separating the waves after the slits.
  • Some participants highlight the probabilistic nature of quantum mechanics, emphasizing that the wave function describes probabilities rather than definite paths or outcomes.
  • Concerns are raised about the intuitive understanding of quantum mechanics, with references to Feynman's caution against seeking deeper explanations beyond probabilistic interpretations.

Areas of Agreement / Disagreement

Participants express multiple competing views regarding the interpretation of the wave function and the nature of interference in the double slit experiment. There is no consensus on the underlying mechanisms or the implications of the observed phenomena.

Contextual Notes

Some participants note that the discussion involves complex interpretations of quantum mechanics, which may not align with classical intuitions. The limitations of pictorial representations in quantum theory are also acknowledged.

  • #31
Lordy. Thread closed temporarily for Moderation...
 
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  • #32
sillyputty said:
Which brings me to ask: How could someone prove their theory true as to what is going on?
You don’t. Physics is an empirical science, and empirical sciences don’t prove that theories are true - it can’t be done. All that we can do is show that our theory is consistent with all experimental evidence so far, and it is helpful if our theory also makes predictions that are different from those of other proposed theories - then we can test the predictions to reject one or the other.

So any proposed theory of what is going in on (the technical term for such theories is, as @phyzguy says above, “hidden variable theories”) must be consistent with all available observational and experimental evidence so far. In particular, it must be consistent with the observed violations of Bell’s inequalities - and I strongly encourage you to read up on that, Googling for “Bell’s Theorem” would be a good start.
 
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  • #33
Thread will remain closed. Thanks all.
 
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