Rydberg–Ritz combination principle
E629519
The Rydberg–Ritz combination principle is a rule in atomic spectroscopy stating that the frequencies (or wavenumbers) of spectral lines can be expressed as differences between terms in a series, enabling systematic prediction and classification of atomic spectra.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Rydberg–Ritz combination principle canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6938877 — 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: Rydberg–Ritz combination principle Context triple: [Rydberg constant, appearsIn, Rydberg–Ritz combination principle]
-
A.
Rydberg constant
The Rydberg constant is a fundamental physical constant that characterizes the limiting value of the highest wavenumber (or lowest wavelength) of any photon that can be emitted from the hydrogen atom, playing a key role in atomic spectroscopy and quantum theory.
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B.
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.
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C.
Kirchhoff's three laws of spectroscopy
Kirchhoff's three laws of spectroscopy are foundational principles in physics that explain how continuous, emission, and absorption spectra arise from interactions between matter and radiation.
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D.
Atombau und Spektrallinien
*Atombau und Spektrallinien* is Arnold Sommerfeld’s influential textbook on atomic structure and spectral lines that helped shape the development of early quantum theory.
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E.
Theory of Atomic Spectra (1935)
Theory of Atomic Spectra (1935) is a foundational physics monograph by Edward Condon that systematically develops the quantum-mechanical theory underlying atomic spectral lines and their structure.
- 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: Rydberg–Ritz combination principle Target entity description: The Rydberg–Ritz combination principle is a rule in atomic spectroscopy stating that the frequencies (or wavenumbers) of spectral lines can be expressed as differences between terms in a series, enabling systematic prediction and classification of atomic spectra.
-
A.
Rydberg constant
The Rydberg constant is a fundamental physical constant that characterizes the limiting value of the highest wavenumber (or lowest wavelength) of any photon that can be emitted from the hydrogen atom, playing a key role in atomic spectroscopy and quantum theory.
-
B.
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.
-
C.
Kirchhoff's three laws of spectroscopy
Kirchhoff's three laws of spectroscopy are foundational principles in physics that explain how continuous, emission, and absorption spectra arise from interactions between matter and radiation.
-
D.
Atombau und Spektrallinien
*Atombau und Spektrallinien* is Arnold Sommerfeld’s influential textbook on atomic structure and spectral lines that helped shape the development of early quantum theory.
-
E.
Theory of Atomic Spectra (1935)
Theory of Atomic Spectra (1935) is a foundational physics monograph by Edward Condon that systematically develops the quantum-mechanical theory underlying atomic spectral lines and their structure.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf | physical law ⓘ |
| appliesTo |
absorption spectra
ⓘ
atomic spectra ⓘ emission spectra ⓘ line spectra ⓘ |
| category |
principle of spectroscopy
ⓘ
rule of atomic physics ⓘ |
| concerns |
differences of energy levels expressed as terms
ⓘ
relationships between spectral line frequencies ⓘ |
| enables |
construction of term schemes
ⓘ
identification of regularities in atomic spectra ⓘ prediction of unknown spectral lines ⓘ systematic classification of spectral lines ⓘ |
| epistemicStatus |
empirical law
ⓘ
phenomenological rule ⓘ |
| field |
atomic spectroscopy
ⓘ
optical spectroscopy ⓘ |
| historicalRole |
empirical basis for Bohr’s frequency condition
ⓘ
precursor to quantum theory ⓘ |
| implies | many spectral lines can be generated from a smaller set of terms ⓘ |
| mathematicalForm | ν_ij = T_i − T_j ⓘ |
| namedAfter |
Johannes Rydberg
ⓘ
Walther Ritz ⓘ |
| relatedTo |
Bohr model
ⓘ
linked to:
Bohr model of the atom
Rydberg formula ⓘ quantum theory of the atom ⓘ spectroscopic term system ⓘ |
| statedAs |
spectral line frequency equals difference of two terms
ⓘ
wavenumber of a line equals difference of two term values ⓘ ν = T(m) − T(n) ⓘ |
| supports | term combination patterns in spectroscopy ⓘ |
| usedIn |
analysis of atomic term systems
ⓘ
classification of multiplet structures ⓘ identification of series limits ⓘ |
| usesConcept |
frequency
ⓘ
spectral series ⓘ spectral term ⓘ wavenumber ⓘ |
| validFor |
hydrogen-like spectra
ⓘ
many-electron atoms ⓘ |
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: Rydberg–Ritz combination principle Description of subject: The Rydberg–Ritz combination principle is a rule in atomic spectroscopy stating that the frequencies (or wavenumbers) of spectral lines can be expressed as differences between terms in a series, enabling systematic prediction and classification of atomic spectra.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.