Zeeman effect
E32703
The Zeeman effect is the splitting of atomic or molecular spectral lines into multiple components when subjected to an external magnetic field, revealing information about energy levels and magnetic moments.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Zeeman effect canonical | 11 |
| Paschen–Back effect | 2 |
| Zeeman Hamiltonian | 2 |
| Zeeman spectroscopy | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T248994 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
Target entity: Zeeman effect Context triple: [Rayleigh–Schrödinger perturbation theory, usedFor, Zeeman effect]
-
A.
Stark effect
The Stark effect is the splitting and shifting of atomic or molecular spectral lines caused by an external electric field.
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B.
Poisson spot
Poisson spot is a bright point of light that appears at the center of the shadow of a circular object due to wave diffraction, providing striking evidence for the wave nature of light.
-
C.
Franck–Condon principle
The Franck–Condon principle is a rule in molecular spectroscopy that explains the intensity distribution of vibronic transitions by assuming electronic transitions occur much faster than nuclear motion, making vertical transitions between vibrational states most probable.
-
D.
Dirac equation
The Dirac equation is a fundamental relativistic wave equation in quantum mechanics that describes spin-½ particles such as electrons and predicts phenomena like antimatter.
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E.
Herzberg–Teller approximation
The Herzberg–Teller approximation is a refinement in molecular spectroscopy that accounts for vibronic coupling by allowing electronic transition dipole moments to depend on nuclear coordinates, explaining intensity in otherwise forbidden transitions.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: Zeeman effect Target entity description: The Zeeman effect is the splitting of atomic or molecular spectral lines into multiple components when subjected to an external magnetic field, revealing information about energy levels and magnetic moments.
-
A.
Stark effect
The Stark effect is the splitting and shifting of atomic or molecular spectral lines caused by an external electric field.
-
B.
Poisson spot
Poisson spot is a bright point of light that appears at the center of the shadow of a circular object due to wave diffraction, providing striking evidence for the wave nature of light.
-
C.
Franck–Condon principle
The Franck–Condon principle is a rule in molecular spectroscopy that explains the intensity distribution of vibronic transitions by assuming electronic transitions occur much faster than nuclear motion, making vertical transitions between vibrational states most probable.
-
D.
Dirac equation
The Dirac equation is a fundamental relativistic wave equation in quantum mechanics that describes spin-½ particles such as electrons and predicts phenomena like antimatter.
-
E.
Herzberg–Teller approximation
The Herzberg–Teller approximation is a refinement in molecular spectroscopy that accounts for vibronic coupling by allowing electronic transition dipole moments to depend on nuclear coordinates, explaining intensity in otherwise forbidden transitions.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
physical phenomenon
ⓘ
spectroscopic effect ⓘ |
| appliesTo |
atomic spectral lines
ⓘ
molecular spectral lines ⓘ |
| cause |
interaction between magnetic field and magnetic dipole moments
ⓘ
lifting of degeneracy of atomic energy levels ⓘ |
| contributedTo |
Nobel Prize in Physics
ⓘ
surface form:
Nobel Prize in Physics 1902
|
| dependsOn |
Landé g-factor
ⓘ
external magnetic field strength ⓘ magnetic quantum number ⓘ total angular momentum quantum number ⓘ |
| describes | splitting of spectral lines in a magnetic field ⓘ |
| discoveredBy | Pieter Zeeman ⓘ |
| explainedBy | Hendrik Lorentz ⓘ |
| field |
atomic physics
ⓘ
magnetism ⓘ molecular physics ⓘ quantum mechanics ⓘ spectroscopy ⓘ |
| hasSelectionRules | Δm = 0, ±1 ⓘ |
| hasType |
Zeeman effect
self-linksurface differs
ⓘ
surface form:
Paschen–Back effect
anomalous Zeeman effect ⓘ normal Zeeman effect ⓘ |
| mathematicallyDescribedBy |
Zeeman effect
self-linksurface differs
ⓘ
surface form:
Zeeman Hamiltonian
perturbation theory in quantum mechanics ⓘ |
| namedAfter | Pieter Zeeman ⓘ |
| occursWhen | atoms or molecules are placed in an external magnetic field ⓘ |
| produces |
π components
ⓘ
σ+ components ⓘ σ− components ⓘ |
| relatedTo |
Bohr magneton
ⓘ
Larmor precession ⓘ Stark effect ⓘ fine structure ⓘ hyperfine structure ⓘ magnetic dipole moment ⓘ spin–orbit coupling ⓘ |
| resultsIn |
polarization of emitted or absorbed radiation
ⓘ
splitting of energy levels ⓘ |
| reveals |
Landé g-factors
ⓘ
information about atomic energy levels ⓘ information about magnetic moments ⓘ |
| usedIn |
Zeeman slower
ⓘ
astrophysics ⓘ atomic clocks ⓘ laser cooling and trapping ⓘ magnetic field measurements in stars ⓘ magnetic resonance techniques ⓘ magneto-optical traps ⓘ plasma diagnostics ⓘ |
| yearDiscovered | 1896 ⓘ |
How these facts were elicited
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Subject: Zeeman effect Description of subject: The Zeeman effect is the splitting of atomic or molecular spectral lines into multiple components when subjected to an external magnetic field, revealing information about energy levels and magnetic moments.
Referenced by (16)
Full triples — surface form annotated when it differs from this entity's canonical label.