Charles's law
E363601
Charles's law is a fundamental gas law stating that, at constant pressure, the volume of a fixed amount of gas is directly proportional to its absolute temperature.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Charles's law canonical | 7 |
| Gay-Lussac's law | 2 |
| Charles–Gay-Lussac law | 1 |
| law of volumes | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3488103 — 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: Charles's law Context triple: [ideal gas law, derivedFrom, Charles's law]
-
A.
Boyle's law
Boyle's law is a fundamental gas law in physics and chemistry stating that the pressure of a fixed amount of gas is inversely proportional to its volume at constant temperature.
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B.
Avogadro's law
Avogadro's law is a fundamental principle of chemistry stating that equal volumes of gases, at the same temperature and pressure, contain equal numbers of molecules.
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C.
ideal gas law
The ideal gas law is a fundamental equation in thermodynamics that relates the pressure, volume, temperature, and amount of an idealized gas, providing a simple model for gas behavior under many conditions.
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D.
Boyle
Boyle is a surname of Irish origin most famously associated with the 17th-century natural philosopher and chemist Robert Boyle, a pioneer of modern experimental science.
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E.
Boyle
Boyle is the vehicle registration prefix code used on license plates issued in Boyle County, Kentucky.
- 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: Charles's law Target entity description: Charles's law is a fundamental gas law stating that, at constant pressure, the volume of a fixed amount of gas is directly proportional to its absolute temperature.
-
A.
Boyle's law
Boyle's law is a fundamental gas law in physics and chemistry stating that the pressure of a fixed amount of gas is inversely proportional to its volume at constant temperature.
-
B.
Avogadro's law
Avogadro's law is a fundamental principle of chemistry stating that equal volumes of gases, at the same temperature and pressure, contain equal numbers of molecules.
-
C.
ideal gas law
The ideal gas law is a fundamental equation in thermodynamics that relates the pressure, volume, temperature, and amount of an idealized gas, providing a simple model for gas behavior under many conditions.
-
D.
Boyle
Boyle is a surname of Irish origin most famously associated with the 17th-century natural philosopher and chemist Robert Boyle, a pioneer of modern experimental science.
-
E.
Boyle
Boyle is the vehicle registration prefix code used on license plates issued in Boyle County, Kentucky.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
empirical law
ⓘ
gas law ⓘ physical law ⓘ |
| alsoKnownAs |
Charles–Gay-Lussac law
ⓘ
linked to:
Charles's law
law of volumes ⓘ
linked to:
Charles's law
|
| appliesTo | ideal gas ⓘ |
| assumes |
ideal gas behavior
ⓘ
low to moderate pressure ⓘ no phase change ⓘ sufficiently high temperature ⓘ |
| combinedIn | combined gas law ⓘ |
| componentOf | ideal gas law ⓘ |
| condition |
constant pressure
ⓘ
fixed amount of gas ⓘ |
| dimension | macroscopic thermodynamic relation ⓘ |
| example |
A balloon expands when heated at constant external pressure.
ⓘ
A gas-filled syringe plunger moves outward when the gas is warmed at constant pressure. ⓘ |
| expressedAs | V2 = V1 × (T2/T1) at constant pressure ⓘ |
| field |
kinetic theory of gases
ⓘ
physical chemistry ⓘ thermodynamics ⓘ |
| historicalDevelopment |
based on experiments by Jacques Charles around 1787
ⓘ
quantitatively published by Joseph Louis Gay-Lussac in 1802 ⓘ |
| limitation |
deviations occur for real gases at high pressure
ⓘ
deviations occur for real gases near condensation ⓘ |
| mathematicalForm |
V ∝ T
ⓘ
V/T = constant ⓘ V1/T1 = V2/T2 ⓘ |
| namedAfter | Jacques Charles ⓘ |
| predicts |
gas volume approaches zero at a finite negative Celsius temperature when extrapolated
ⓘ
gas volume increases linearly with increasing absolute temperature at constant pressure ⓘ |
| relatedTo |
Avogadro's law
ⓘ
Boyle's law ⓘ Gay-Lussac's law ⓘ |
| requires | temperature measured on an absolute scale ⓘ |
| statement | At constant pressure, the volume of a fixed amount of gas is directly proportional to its absolute temperature. ⓘ |
| teaches | volume and absolute temperature of a gas are directly proportional at constant pressure ⓘ |
| temperatureScale |
Kelvin
ⓘ
linked to:
kelvin
|
| usedIn |
aerostatics
ⓘ
engineering thermodynamics ⓘ gas volume correction calculations ⓘ meteorology ⓘ temperature calibration ⓘ |
| variable |
T (absolute temperature)
ⓘ
V (volume) ⓘ |
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: Charles's law Description of subject: Charles's law is a fundamental gas law stating that, at constant pressure, the volume of a fixed amount of gas is directly proportional to its absolute temperature.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Charles's law
linked to: Charles's law
linked to: Charles's law
linked to: Charles's law