Is the Diffraction Pattern from Slits Influenced by Topmost Atomic Layers?

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Discussion Overview

The discussion explores whether the diffraction pattern observed from slits is influenced by the topmost atomic layers of the slit material. It examines the underlying mechanisms of diffraction, including both classical and quantum perspectives, and considers implications if the initial hypothesis were true.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Exploratory

Main Points Raised

  • One participant questions if the diffraction pattern is caused by photons diffracting off atoms in the topmost atomic layers of the slit, suggesting potential ramifications if this were true.
  • Another participant argues that the diffraction pattern is primarily due to interference effects, specifically Fresnel and Fraunhofer diffraction, and downplays the role of atomic layers.
  • A third participant references Young's Double Slit experiment, emphasizing photon wave interference and mentioning the persistence of an interference pattern even when photons are sent one at a time through a single slit.
  • One participant raises a question about the particle nature of light and its role in producing diffraction patterns, suggesting a focus on quantum electrodynamics (QED).
  • Another participant notes that modern physics accommodates both wave and particle descriptions of light, hinting that some phenomena may only be explainable through wave theory.

Areas of Agreement / Disagreement

Participants express differing views on the influence of atomic layers on diffraction patterns, with some emphasizing interference effects and others exploring the implications of the atomic structure. The discussion remains unresolved with multiple competing perspectives.

Contextual Notes

Participants have not reached consensus on the role of atomic layers in diffraction, and there are unresolved questions regarding the nature of light as a wave or particle in this context.

Buckeye
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Is the diffraction pattern of two recti-linear slits or an annular aperture due to the photons that diffract off the atoms located in the topmost atomic layers of the slit itself?

If my explanation of the cause of diffraction patterns is true, then what are the ramifications?
 
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As far as I know, the diffraction pattern from two rectangular slits is largely due to

(1) simple interference between photons coming from each of the slits (Fresnel Diffraction), and

(2) not so simple interfere between photons coming through every point in the opening of a single slit (Fraunhofer Diffraction).

I don't think the atoms, themselves, have much effect on the observed diffraction pattern.
 
If you're talking about Young's Double Slit experiment the usual explanation is photon wave interference. The alternating light and dark areas are from constructive and destructive wave interference of the explanation photon waves from each slit. I'll try to draw and post a picture later if you would like to see.

What is more interesting is what happens if you have a photon gun and fire a ingle photon ever millisecond or so through only one slit. Even if you know the photon gun is shooting through only the left or right slit, you will still end up with an interference pattern even though there is nothing for the photon to interfere with. An explanation that I have heard for this is that in an alternate but parallel universe, the other you is shooting photons through the opposite slit you are, and through quantum foam the photon's are interacting and interfering with each other on the quantum level...i think that's just cool to think about.
 
Classical physics treats light as a wave, but QED etc consider it a particle. If we ignore the fact that light can, in many cases, be treated as a wave, and focus on the particle nature, what is it about the particle nature that produces the diffraction pattern?
 
Interesting to think about.

Modern Physics considers light as either a particle or wave, whatever fits the situation. Maybe this is one of the times where there is only an explanation in the wave form?
 

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