Thought double-slit experiment

In summary, In Young’s double slit experiment, if we use a single electron, then the electron-wave would divide itself into two wavelets due to two narrow slits. The electron matter does not divide itself in the experiment and it is not clear what is actually divided. In quantum mechanics, the concept of a "particle" is different from the classical idea and there is no scientific agreement on what is actually happening in the experiment. The electron-wave may or may not be the "something" that divides, but there is no known experiment that can answer this question. The original poster's idea of the electron-wave dividing into two may not align with the principles of quantum mechanics and there is no way to determine the truth of this concept.
  • #1
En Joy
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In Young’s double slit experiment, if we use a single electron, then the electron-wave would divide itself into two wavelets due to two narrow slits. Similarly would the electron-matter divide itself in that experiment? If it would not, then through one slit, both the electron-wave and electron-matter would go and through one slit only electron-wave would go. But we would not see any assymmetry in interference pattern, why?
 
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  • #2
The electron wave determines the probabilities of the outcomes of a measurement if one were made.
At any stage of the double slit experiment, wherever you place detectors, you will detect either one whole electron or nothing.
The probability waves will tell you what sort of interference pattern you'll see if you put enough electrons through the experiment.

The electron matter does not divide itself in the experiment.
 
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  • #3
jfizzix said:
The electron matter does not divide itself in the experiment.
Then what is actually divided? ( I am new to this topic)
 
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  • #4
fireflies said:
Then what is actually divided? ( I am new to this topic)

Nothing, as far as the mathematical formalism of quantum mechanics is concerned. Quantum mechanics accurately predicts the probability of the electron landing at various points on the screen based on the number of possible paths and the initial state of the electron, but it says nothing about what's going on between source and screen. Furthermore, in QM the word "particle" means something very different than the informal English meaning of the word, so you cannot trust your classical ideas about particle behavior - for example, you cannot assume that, if the particle started at point A and was later found at point B, it moved through the space between them.

You may reasonably choose to believe that something had to physically divide and reunite somewhere, but there is no scientific agreement about whether that is indeed the case, nor what that something might be, and no known experiment that could answer either question.
 
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  • #5
Nugatory said:
You may reasonably choose to believe that something had to physically divide and reunite somewhere, but there is no scientific agreement about whether that is indeed the case, nor what that something might be, and no known experiment that could answer either question.

Hard thing to take. Is this "something" the electron-wave? (Like the OP mentioned)
En Joy said:
In Young’s double slit experiment, if we use a single electron, then the electron-wave would divide itself into two wavelets due to two narrow slits.

If this is so, then what is actually electron-wave? Intuitively I thought that, it is the wave property of electron talked about.
 
  • #6
fireflies said:
Hard thing to take. Is this "something" the electron-wave? (Like the OP mentioned)
...
Maybe, maybe not.

Original poster En Joy's comment about an electron-wave "dividing itself into two wavelets" is not quantum mechanics, it's an easily visualized mental picture that may or may not be what's really going on here. Maybe there is a "probability wave" that is as real as the waves on the ocean I'm looking at right now (although this would be a lot more satisfying if we could say what was waving) and that divides into two; but there's nothing in QM that says that has to be what's going on.
 

Related to Thought double-slit experiment

What is the thought double-slit experiment?

The thought double-slit experiment is a mental framework used to understand the concepts of quantum mechanics and the wave-particle duality of matter. It involves imagining a scenario where a single particle is sent through two parallel slits and observing the resulting interference pattern on a screen behind the slits.

What is the significance of the thought double-slit experiment?

The thought double-slit experiment is significant because it illustrates the wave-like behavior of particles at the quantum level. It also challenges our classical understanding of particles as solid, discrete objects and introduces the concept of probability in the behavior of particles.

Who first proposed the thought double-slit experiment?

The thought double-slit experiment was first proposed by English physicist and mathematician Thomas Young in the early 1800s. He used the experiment to demonstrate the wave-like nature of light, which was a groundbreaking discovery at the time.

Can the thought double-slit experiment be performed in reality?

Yes, the thought double-slit experiment has been performed in reality numerous times, and the results have consistently shown the wave-like behavior of particles. One notable experiment was conducted by physicist Thomas Young himself, using light passing through two thin slits, which produced an interference pattern on a screen behind the slits.

What are the implications of the thought double-slit experiment?

The thought double-slit experiment has major implications for our understanding of the fundamental nature of reality. It challenges our classical understanding of particles and raises questions about the relationship between the observer and the observed. It also has practical applications in fields such as quantum computing and cryptography.

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