Verdet constant
E446183
The Verdet constant is a material-specific coefficient that quantifies how strongly a substance rotates the plane of polarization of light in a magnetic field.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Verdet constant canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4485705 — 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.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Verdet constant Context triple: [Faraday effect, materialParameter, Verdet constant]
-
A.
Lorentz–Lorenz equation
The Lorentz–Lorenz equation is a fundamental relation in optics and electromagnetism that connects a material’s refractive index to its molecular polarizability and density.
-
B.
von Klitzing constant
The von Klitzing constant is a fundamental physical constant that characterizes the quantized Hall resistance and provides a precise standard for electrical resistance in quantum metrology.
-
C.
Ledoux criterion
The Ledoux criterion is an astrophysical stability condition that determines when a stratified stellar layer becomes convectively unstable, accounting for both temperature and composition gradients.
-
D.
Peuterey Integral
Peuterey Integral is a legendary, highly committing alpine climbing route that follows the full Peuterey ridge to the summit of Mont Blanc, renowned as one of the longest and most serious ridge climbs in the Alps.
-
E.
Wirtinger
Wirtinger is a surname most notably associated with Austrian mathematician Wilhelm Wirtinger, known for his contributions to complex analysis and knot theory.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Verdet constant Target entity description: The Verdet constant is a material-specific coefficient that quantifies how strongly a substance rotates the plane of polarization of light in a magnetic field.
-
A.
Lorentz–Lorenz equation
The Lorentz–Lorenz equation is a fundamental relation in optics and electromagnetism that connects a material’s refractive index to its molecular polarizability and density.
-
B.
von Klitzing constant
The von Klitzing constant is a fundamental physical constant that characterizes the quantized Hall resistance and provides a precise standard for electrical resistance in quantum metrology.
-
C.
Ledoux criterion
The Ledoux criterion is an astrophysical stability condition that determines when a stratified stellar layer becomes convectively unstable, accounting for both temperature and composition gradients.
-
D.
Peuterey Integral
Peuterey Integral is a legendary, highly committing alpine climbing route that follows the full Peuterey ridge to the summit of Mont Blanc, renowned as one of the longest and most serious ridge climbs in the Alps.
-
E.
Wirtinger
Wirtinger is a surname most notably associated with Austrian mathematician Wilhelm Wirtinger, known for his contributions to complex analysis and knot theory.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
magneto‑optical parameter
ⓘ
physical constant ⓘ |
| appearsInEquation | θ = V B L ⓘ |
| appliesTo |
crystals
ⓘ
gases ⓘ glasses ⓘ liquids ⓘ transparent media ⓘ |
| dependsOn |
material
ⓘ
temperature ⓘ wavelength of light ⓘ |
| describes | rotation of plane of polarization of light in a magnetic field ⓘ |
| field |
electromagnetism
ⓘ
magneto‑optics ⓘ optics ⓘ |
| hasDimension | radian per tesla per meter ⓘ |
| hasSIUnit | rad·T⁻¹·m⁻¹ ⓘ |
| isComplexInDispersiveMedia | true ⓘ |
| isFrequencyDependent | true ⓘ |
| isMaterialSpecific | true ⓘ |
| isPartOf | material optical data sheets ⓘ |
| isProportionalityConstantBetween | rotation angle and product of magnetic field and path length ⓘ |
| isScalarQuantity | true ⓘ |
| isTabulatedFor |
common optical glasses
ⓘ
standard laser wavelengths ⓘ |
| isTypicallyLargerIn |
magneto‑optical glasses
ⓘ
paramagnetic materials ⓘ |
| measuredBy | polarimetry ⓘ |
| namedAfter | Émile Verdet NERFINISHED ⓘ |
| quantityInEquation |
B (magnetic flux density)
ⓘ
L (path length) ⓘ θ (rotation angle) ⓘ |
| relatedConcept |
circular birefringence
ⓘ
magnetic circular birefringence ⓘ specific rotation ⓘ |
| relatedTo | magneto‑optical Kerr effect ⓘ |
| relatesTo | Faraday effect NERFINISHED ⓘ |
| symbol | V ⓘ |
| usedIn |
Faraday rotator design
ⓘ
current sensing via Faraday rotation ⓘ magnetic field measurement ⓘ magneto‑optical sensors ⓘ optical isolator design ⓘ |
| usedToCharacterize | magneto‑optical response of materials ⓘ |
| usedToOptimize |
Faraday rotator efficiency
ⓘ
optical isolator performance ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Verdet constant Description of subject: The Verdet constant is a material-specific coefficient that quantifies how strongly a substance rotates the plane of polarization of light in a magnetic field.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.