- #1
LitleBang
- 64
- 0
Does anyone now what kind of experiment they used to determine that the electron is a dipole?
Determining Electron Dipole: Experiments & Results
Click For Summary
Discussion Overview
The discussion revolves around the experiments and theoretical foundations related to the electron's dipole characteristics, specifically focusing on its magnetic dipole moment and potential electric dipole nature. The scope includes historical experiments, theoretical implications, and various interpretations within quantum mechanics.
Discussion Character
- Exploratory
- Technical explanation
- Conceptual clarification
- Debate/contested
Main Points Raised
- One participant mentions the Stern-Gerlach experiment as a key experiment demonstrating the quantum nature of the electron's magnetic dipole moment, suggesting a move to a quantum-focused forum.
- Another participant raises the possibility of discussing the electric dipole, referencing Hinds and Ytterbium, indicating a different perspective on the electron's dipole characteristics.
- A historical context is provided regarding the proposal of electron spin and its magnetic moment, citing contributions from Uhlenbeck, Goudsmit, and Dirac, which were aimed at explaining atomic spectra.
- Various techniques for studying the electron's dipole characteristics are mentioned, including those involving spectra and isolated electrons.
Areas of Agreement / Disagreement
Participants express differing views on whether the discussion should focus on magnetic or electric dipole characteristics, indicating that multiple competing perspectives remain unresolved.
Contextual Notes
The discussion includes references to historical experiments and theoretical developments but does not resolve the distinctions between magnetic and electric dipole interpretations. There are also implications of missing assumptions regarding the definitions of dipoles in this context.
- #2
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It's the Stern-Gerlach experiment performed in Frankfurt am Main in 1923 by Stern and Gerlach with a fundamental result showing the quantum nature of the electron's magnetic dipole moment (related to its spin). So one should move this thread to the quantum forum.
- #3
BvU
Science Advisor
Homework Helper
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- #4
phyzguy
Science Advisor
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The idea that the electron has spin and consequently a magnetic moment was initially proposed to explain details of atomic spectra. According to Wikipedia,
"The idea of a spin angular momentum was first proposed in a 1925 publication by George Uhlenbeck and Samuel Goudsmit to explain hyperfine splitting in atomic spectra.[n 3] In 1928, Paul Dirac provided a rigorous theoretical foundation for the concept in the Dirac equation for the wavefunction of the electron.[n 4]"
Now, there are many techniques that are used, some involving spectra and some involving isolated electrons, like this link.
"The idea of a spin angular momentum was first proposed in a 1925 publication by George Uhlenbeck and Samuel Goudsmit to explain hyperfine splitting in atomic spectra.[n 3] In 1928, Paul Dirac provided a rigorous theoretical foundation for the concept in the Dirac equation for the wavefunction of the electron.[n 4]"
Now, there are many techniques that are used, some involving spectra and some involving isolated electrons, like this link.
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