Compton effect
E99416
The Compton effect is the increase in wavelength (and corresponding decrease in energy) of X-rays or gamma rays when they scatter off electrons, providing key evidence for the particle nature of light.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Compton scattering | 7 |
| Compton effect canonical | 2 |
| Compton scattering formula for photon energy shift | 1 |
| Compton wavelength shift | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T850951 — 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: Compton effect Context triple: [Arthur H. Compton, knownFor, Compton effect]
-
A.
Klein–Nishina formula
The Klein–Nishina formula is a fundamental result in quantum electrodynamics that gives the differential cross section for Compton scattering of photons by free electrons, incorporating relativistic and quantum effects.
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B.
Röntgen radiation
Röntgen radiation, more commonly known as X-rays, is a form of high-energy electromagnetic radiation widely used for medical imaging, material analysis, and scientific research.
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C.
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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D.
Zeeman effect
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.
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E.
Szilard–Chalmers effect
The Szilard–Chalmers effect is a nuclear chemistry phenomenon in which atoms that undergo neutron capture and become radioactive are chemically separated from their original, non-activated atoms due to recoil-induced disruption of their chemical bonds.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: Compton effect Target entity description: The Compton effect is the increase in wavelength (and corresponding decrease in energy) of X-rays or gamma rays when they scatter off electrons, providing key evidence for the particle nature of light.
-
A.
Klein–Nishina formula
The Klein–Nishina formula is a fundamental result in quantum electrodynamics that gives the differential cross section for Compton scattering of photons by free electrons, incorporating relativistic and quantum effects.
-
B.
Röntgen radiation
Röntgen radiation, more commonly known as X-rays, is a form of high-energy electromagnetic radiation widely used for medical imaging, material analysis, and scientific research.
-
C.
Stark effect
The Stark effect is the splitting and shifting of atomic or molecular spectral lines caused by an external electric field.
-
D.
Zeeman effect
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.
-
E.
Szilard–Chalmers effect
The Szilard–Chalmers effect is a nuclear chemistry phenomenon in which atoms that undergo neutron capture and become radioactive are chemically separated from their original, non-activated atoms due to recoil-induced disruption of their chemical bonds.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
physical phenomenon
ⓘ
quantum effect ⓘ scattering process ⓘ |
| alsoKnownAs |
Compton effect
ⓘ
surface form:
Compton scattering
|
| category |
Quantum mechanics
ⓘ
Radiation physics ⓘ Scattering theory ⓘ |
| conserves |
energy
ⓘ
momentum ⓘ |
| contradicts | classical wave theory of light alone ⓘ |
| dependsOn | scattering angle ⓘ |
| describes |
decrease in energy of X-rays or gamma rays after scattering
ⓘ
increase in wavelength of X-rays or gamma rays after scattering ⓘ |
| hasApplicationIn |
astrophysics
ⓘ
gamma-ray spectroscopy ⓘ material analysis ⓘ medical imaging ⓘ radiation therapy ⓘ |
| hasClassicalLimit | Thomson scattering ⓘ |
| hasFormulaForShift | Δλ = (h / (m_e c)) (1 − cos θ) ⓘ |
| hasKeyEquation | λ' − λ = (h / (m_e c)) (1 − cos θ) ⓘ |
| hasMaximumShiftAt | scattering angle 180 degrees ⓘ |
| hasQuantity |
Compton wavelength
ⓘ
Compton effect self-linksurface differs ⓘ
surface form:
Compton wavelength shift
|
| hasSymbol | Δλ ⓘ |
| involves |
electrons
ⓘ
photons ⓘ |
| isDescribedIn | quantum electrodynamics ⓘ |
| isImportantFor |
high-energy astrophysical sources
ⓘ
understanding radiation shielding ⓘ |
| isTypeOf | inelastic scattering ⓘ |
| maximumWavelengthShift | 2 h / (m_e c) ⓘ |
| namedAfter |
Arthur H. Compton
ⓘ
surface form:
Arthur Holly Compton
|
| occursInRegime | high-energy photons ⓘ |
| occursMoreStronglyFor | larger scattering angles ⓘ |
| occursOn |
free electrons
ⓘ
loosely bound electrons ⓘ |
| occursWith |
X-rays
ⓘ
gamma rays ⓘ |
| providesEvidenceFor |
photon concept
ⓘ
quantum theory ⓘ |
| relatedTo |
Klein–Nishina formula
ⓘ
Thomson scattering ⓘ photoelectric effect ⓘ |
| shows | particle nature of light ⓘ |
| usedTo |
calibrate high-energy photon detectors
ⓘ
measure electron momentum distributions ⓘ |
| wasExplainedBy |
Arthur H. Compton
ⓘ
surface form:
Arthur Holly Compton
|
| yearExplained | 1923 ⓘ |
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.
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.
Subject: Compton effect Description of subject: The Compton effect is the increase in wavelength (and corresponding decrease in energy) of X-rays or gamma rays when they scatter off electrons, providing key evidence for the particle nature of light.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.