zeroth law of thermodynamics
E844097
The zeroth law of thermodynamics states that if two systems are each in thermal equilibrium with a third system, then they are in thermal equilibrium with each other, thereby defining the concept of temperature.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Zeroth Law of Thermodynamics | 1 |
| zeroth law of thermodynamics canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10147853 — 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: zeroth law of thermodynamics Context triple: [The four laws of black hole mechanics, establishesAnalogyWith, zeroth law of thermodynamics]
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A.
third law of thermodynamics
The third law of thermodynamics is a fundamental principle stating that the entropy of a perfect crystal approaches zero as its temperature approaches absolute zero, forming a basis for absolute entropy measurements and low-temperature physics.
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B.
second law of thermodynamics
The second law of thermodynamics is a fundamental physical principle stating that the total entropy of an isolated system can never decrease over time, establishing the direction of natural processes and the concept of irreversibility.
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C.
Kelvin–Planck statement of the second law of thermodynamics
The Kelvin–Planck statement of the second law of thermodynamics asserts that it is impossible to construct a cyclic heat engine that converts all absorbed heat from a single reservoir entirely into work without any other effect.
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D.
Clausius theorem
The Clausius theorem is a fundamental result in thermodynamics that formalizes the second law by relating the cyclic integral of heat transfer over temperature to entropy, showing that this quantity is always less than or equal to zero for any cyclic process.
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E.
First Law of Thermodynamics
The First Law of Thermodynamics is the fundamental physical principle that states energy cannot be created or destroyed, only transformed or transferred, thereby conserving the total energy of an isolated system.
- 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: zeroth law of thermodynamics Target entity description: The zeroth law of thermodynamics states that if two systems are each in thermal equilibrium with a third system, then they are in thermal equilibrium with each other, thereby defining the concept of temperature.
-
A.
third law of thermodynamics
The third law of thermodynamics is a fundamental principle stating that the entropy of a perfect crystal approaches zero as its temperature approaches absolute zero, forming a basis for absolute entropy measurements and low-temperature physics.
-
B.
second law of thermodynamics
The second law of thermodynamics is a fundamental physical principle stating that the total entropy of an isolated system can never decrease over time, establishing the direction of natural processes and the concept of irreversibility.
-
C.
Kelvin–Planck statement of the second law of thermodynamics
The Kelvin–Planck statement of the second law of thermodynamics asserts that it is impossible to construct a cyclic heat engine that converts all absorbed heat from a single reservoir entirely into work without any other effect.
-
D.
Clausius theorem
The Clausius theorem is a fundamental result in thermodynamics that formalizes the second law by relating the cyclic integral of heat transfer over temperature to entropy, showing that this quantity is always less than or equal to zero for any cyclic process.
-
E.
First Law of Thermodynamics
The First Law of Thermodynamics is the fundamental physical principle that states energy cannot be created or destroyed, only transformed or transferred, thereby conserving the total energy of an isolated system.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
law of thermodynamics
ⓘ
physical law ⓘ |
| appliesTo |
macroscopic systems
ⓘ
systems in thermodynamic equilibrium ⓘ |
| assumes | systems can be in thermal equilibrium ⓘ |
| basisFor |
Celsius temperature scale
NERFINISHED
ⓘ
Fahrenheit temperature scale NERFINISHED ⓘ Kelvin temperature scale NERFINISHED ⓘ thermodynamic temperature ⓘ |
| category | equilibrium principle ⓘ |
| concerns |
heat exchange
ⓘ
thermal contact ⓘ |
| contrastsWith | non-equilibrium thermodynamics ⓘ |
| defines |
temperature
ⓘ
thermal equilibrium ⓘ |
| enables |
definition of empirical temperature scales
ⓘ
use of thermometers ⓘ |
| ensures |
consistency of temperature comparisons
ⓘ
transitivity of temperature equality ⓘ |
| epistemicRole |
axiom for defining temperature operationally
ⓘ
foundational postulate of classical thermodynamics ⓘ |
| field |
statistical mechanics
ⓘ
thermodynamics ⓘ |
| historicalNote |
formulated after the first and second laws of thermodynamics
ⓘ
named zeroth law to emphasize its logical precedence ⓘ |
| implies |
existence of a scalar temperature function
ⓘ
systems at same temperature are in mutual thermal equilibrium ⓘ thermal equilibrium is a transitive relation ⓘ |
| mathematicalForm | equivalence relation on thermal equilibrium states ⓘ |
| precedes | first law of thermodynamics NERFINISHED ⓘ |
| relatedConcept |
equation of state
ⓘ
ideal thermometer ⓘ temperature scale ⓘ thermodynamic equilibrium ⓘ thermodynamic system ⓘ |
| relatesTo |
first law of thermodynamics
NERFINISHED
ⓘ
second law of thermodynamics ⓘ third law of thermodynamics ⓘ |
| states | if two systems are each in thermal equilibrium with a third system, they are in thermal equilibrium with each other ⓘ |
| usedIn |
calibration of thermometers
ⓘ
definition of intensive properties ⓘ temperature measurement ⓘ thermodynamic state postulates ⓘ |
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: zeroth law of thermodynamics Description of subject: The zeroth law of thermodynamics states that if two systems are each in thermal equilibrium with a third system, then they are in thermal equilibrium with each other, thereby defining the concept of temperature.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
The four laws of black hole mechanics
this entity surface form:
Zeroth Law of Thermodynamics