What happens if the screen in young's double slit experiment is replac

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Discussion Overview

The discussion revolves around the implications of replacing the screen in Young's double slit experiment with a photoelectric material. Participants explore the nature of light, particularly its wave and particle characteristics, in the context of quantum mechanics and the photoelectric effect.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant suggests that electrons would only be emitted from regions of constructive interference, questioning the compatibility of light exhibiting both wave and particle nature.
  • Another participant argues that the particle nature of light is evidenced whenever a photon is absorbed, indicating that a photoelectric setup is not necessary to demonstrate this.
  • A participant questions whether the wave and particle characteristics of light are mutually exclusive, leading to a discussion about interpretations of quantum mechanics.
  • One participant claims that modern quantum electrodynamics (QED) does not support the concept of wave-particle duality and that the photoelectric effect can be explained through the interaction of quantized electrons with a classical electromagnetic wave.
  • A request for references on the topic is made, highlighting the desire for further reading on the relationship between the photoelectric effect and quantum mechanics.

Areas of Agreement / Disagreement

Participants express differing views on the interpretation of light's nature and the implications of the photoelectric effect, indicating that multiple competing perspectives remain without a consensus.

Contextual Notes

Some claims rely on interpretations of quantum mechanics and the definitions of wave-particle duality, which may not be universally accepted or resolved within the discussion.

Who May Find This Useful

Readers interested in quantum mechanics, the photoelectric effect, and interpretations of light's dual nature may find this discussion relevant.

junfan02
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What happens if the screen in young's double slit experiment is replaced with a photoelectric material?
Electrons should be emitted only from regions where constructive interference occurs! Doesn't that mean in this case light will depic both wave and particle nature? That is clearly not possible.
Where am I wrong?
 
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junfan02 said:
What happens if the screen in young's double slit experiment is replaced with a photoelectric material?
Electrons should be emitted only from regions where constructive interference occurs! Doesn't that mean in this case light will depic both wave and particle nature? That is clearly not possible.
Where am I wrong?

Anytime that light (a photon) is absorbed, you might say that the particle nature of light is evidenced. You don't need a photoelectric setup to say that.
 
So the two things aren't mutually exclusive?
 
junfan02 said:
So the two things aren't mutually exclusive?

You will find that it comes down to a matter of interpretation. There is nothing about the idea that violates any quantum mechanical rules.
 
Despite repeated claims in the popular-science literature there's no wave-particle duality in modern QED, and the photoelectric effect does not prove the quantum nature of the em. field. It's described very well as the interaction of quantized electrons bound in the metal with a classical em. wave.
 
vanhees71 said:
Despite repeated claims in the popular-science literature there's no wave-particle duality in modern QED, and the photoelectric effect does not prove the quantum nature of the em. field. It's described very well as the interaction of quantized electrons bound in the metal with a classical em. wave.

Could you please suggest me a reference so I can read more about it?
 
The photo effect is treated in many modern books about quantum mechanics in the chapter on time-dependent perturbation theory, e.g., in

Landau, Lifshitz, Course on Theoretical Physics III, Quantum Mechanics.
 

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