A feasible experiment that can decide

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SUMMARY

The forum discussion centers on the Davisson-Germer experiment, which verifies the de Broglie wavelength formula (λ = h/mv). A proposed modification involves adding a Velocity Selector to measure the velocity of electrons at higher energies, challenging the notion that only "rest mass" should be considered in the de Broglie formula. The discussion highlights the need for experiments that explore the relationship between electron mass and velocity, particularly in the context of relativistic effects. Participants express skepticism about the necessity of the proposed experiment, citing existing high-energy electron diffraction studies.

PREREQUISITES
  • Understanding of the de Broglie wavelength formula (λ = h/mv)
  • Familiarity with the Davisson-Germer experiment and its historical significance
  • Knowledge of relativistic mass and kinetic energy equations
  • Basic principles of electron acceleration and diffraction techniques
NEXT STEPS
  • Research the implementation of Velocity Selectors in particle physics experiments
  • Explore high-energy electron diffraction experiments and their methodologies
  • Investigate the implications of relativistic mass in quantum mechanics
  • Study the historical context and advancements following the Davisson-Germer experiment
USEFUL FOR

Physicists, researchers in quantum mechanics, and students interested in experimental physics, particularly those exploring the foundations of wave-particle duality and relativistic effects on mass.

  • #31
Zapperz,
I'm searching on RHEED (Reflection High Energy Electron Diffraction) now.
I haven't found about it before.
May be this is what I'm looking for!
Thanks for the key word.
 
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  • #32
Zapperz,
I have made an extensive web search about RHEED experimentation.
I can see that electrons are accelerated to very high energies, they are diffracted by thin surfaces and a CCD camera (or equivalent detector) is used to capture diffracted images that are very very small due to de very small wavelenght2 of the electrons. After this stages the digitalized images are sent to a computer for image processing and análisis.

For example we can visit: http://www.geocities.com/CapeCanaveral/5702/Fe_Si.html"

I can see that in all the visited pages the interest of the researchers is focused on the images they obtain to deduce the properties of the chrystaline surfaces and not the análisis of the data necessary to verify De Broglie's formula.
In the amplification of the images the real magnitude of the distances between the diffraction "spots" that appear is lost!
I can state that the verification of the De Broglie for relativistic mass haven't been done yet!

I realize now that all the technology necessary to do the experiment I propose is available, just only the goal to verify the De Broglie formula must rise!

I strongly believe it is very important to do the verification of the dependency of mass with the velocity by a RHEED experiment and the De Broglie formula.
 
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  • #33
martillo said:
Zapperz,
I have made an extensive web search about RHEED experimentation.
I can see that electrons are accelerated to very high energies, they are diffracted by thin surfaces and a CCD camera (or equivalent detector) is used to capture diffracted images that are very very small due to de very small wavelenght2 of the electrons. After this stages the digitalized images are sent to a computer for image processing and análisis.
For example we can visit: http://www.geocities.com/CapeCanaveral/5702/Fe_Si.html"
I can see that in all the visited pages the interest of the researchers is focused on the images they obtain to deduce the properties of the chrystaline surfaces and not the análisis of the data necessary to verify De Broglie's formula.
In the amplification of the images the real magnitude of the distances between the diffraction "spots" that appear is lost!
I can state that the verification of the De Broglie for relativistic mass haven't been done yet!
I realize now that all the technology necessary to do the experiment I propose is available, just only the goal to verify the De Broglie formula must rise!
I strongly believe it is very important to do the verification of the dependency of mass with the velocity by a RHEED experiment and the De Broglie formula.

Something is seriously wrong with your understanding, and what I have said earlier is NOT getting through.

Read this VERY CAREFULLY: if the relativistic description is WRONG, what we USED RHEED for, and all other experiments, would give us NONSENSICAL ANSWERS. This would render all of these experiments useless. It is why I told you earlier that without relativistic corrections, my measurement of the energy of the electrons in the accelerator would be BOGUS!

You are blind to the clear evidence that the fact that we DO use these thing to study OTHER things, means that we fully understand how they work and the principle behind them! If we do not, we have zero confidence in using them, and how they behave! Every single applications of physics principles come from knowing what they behave like! We used RHEED because we ALREADY know the relativistic effects VERY WELL! If not, what I measure from experiment and deduce into practical values will be nonsense! The diffraction results will not give me the correct lattice constant, and if I try to use that result to do stuff with, I get garbage!

Why don't you try it? Start with a wrong premise, and then using that premise, get some parameters out of an experiment. Now use those parameters as the basis of your understanding and apply those to a different situation. You'll get puzzling results, as puzzling as what you're trying to argue here.

I've asked you repeatedly to show such an effect beyond such relativistic effects. You have continued to ignore my request. As of now, this thread is done. Any further line of argument based on this issue must be done in the IR section.
 
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