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intervoxel
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How experimentally it is shown that the electron's spin is hbar/2. Is the Stern-Gerlach experiment sufficient?
Is the Stern-Gerlach experiment sufficient?
- Context: Graduate
- Thread starter intervoxel
- Start date
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- Tags
- Experiment Stern-gerlach
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Discussion Overview
The discussion centers around the sufficiency of the Stern-Gerlach experiment in demonstrating the electron's spin value of hbar/2. Participants explore the experimental evidence for electron spin, its implications in quantum mechanics, and related phenomena such as the Zeeman effect.
Discussion Character
- Exploratory
- Technical explanation
- Conceptual clarification
- Debate/contested
Main Points Raised
- Some participants assert that the Stern-Gerlach experiment shows the electron beam splitting into two, indicating the quantized nature of spin.
- Others suggest that measuring the exact deviation of the beams can provide information about the precise value of the electron's spin.
- One participant mentions the relationship between electron spin and spectral line splittings in the anomalous Zeeman effect.
- Another point raised is that the Stern-Gerlach experiment was originally conducted with neutral particles, such as silver and hydrogen atoms, and that charged particles would behave differently in a magnetic field.
- It is noted that the spin of the electron is inferred from the fine structure of atomic spectral lines, rather than directly measured in the Stern-Gerlach experiment.
Areas of Agreement / Disagreement
Participants express differing views on whether the Stern-Gerlach experiment alone is sufficient to demonstrate the electron's spin value. There is no consensus on the adequacy of the experiment or the methods of measuring spin.
Contextual Notes
Some limitations include the dependence on the definitions of spin and the conditions under which the Stern-Gerlach experiment is conducted. The discussion also highlights the need for further clarification on the relationship between spin and other quantum phenomena.
Who May Find This Useful
This discussion may be of interest to those studying quantum mechanics, particularly in relation to spin, experimental physics, and atomic structure.