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5-18

entropy

URNurn:iso:std:iso:80000:-5:ed-2:en:item:5-18

https://metanorma.github.io/isq-smart/quantities/part-5/t5-18
urn:iso:std:iso:80000:-5:ed-2:en:item:5-18

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-5:ed-2:en:item:5-18

IEC

urn:iec:std:iec:80000-5:2019:::item:5-18

Designations

ENentropy

FRentropie

Symbol

S

Notation systems

Rendered

S

AsciiMath

S

LaTeX

S

Definition

natural logarithm of number of equally probable microscopic configurations in a macroscopic system, multiplied by the Boltzmann constant:

S = k ln W

where $W$ is number of configurations and $k$ is the Boltzmann constant (ISO 80000-1)

produit du logarithme népérien du nombre de configurations microscopiques également probables dans un système macroscopique, par la constante de Boltzmann:

S = k ln W

où $W$ est le nombre de configurations et $k$ est la constante de Boltzmann (ISO 80000-1)

Units

\frac{J}{K}

joule per kelvin

View related quantities →

k g \cdot m^{2} \cdot s^{- 2} \cdot K^{- 1}

kilogram square metre per second squared kelvin

View related quantities →

Referenced by

thermodynamic temperature isentropic compressibility heat isentropic exponent specific entropy Helmholtz energy Gibbs energy

Concept HierarchyPendrill (2024)

L² M T⁻² Θ⁻¹L² M T⁻² Θ⁻¹ quantitiesLevel 0 · Kind

Broader concepts

◇ L² M T⁻² Θ⁻¹ quantities

Narrower concepts

↓ t13-27 ↓ specific entropy ↓ t9-8

Ontology
isq:Quantity smart:TermEntry

Class Hierarchy

smart:Entity smart:TermEntryisq:Quantity

A physical quantity as defined in ISO/IEC 80000, with associated symbols, definitions, and units of measurement.

Instance IRI

isq:t5-18

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	5-18
skosxl:prefLabel	"entropy"@en
skosxl:altLabel	"S"@en
skos:definition	natural logarithm of number of equally probable microscopic configurations in a macroscopic system, multiplied by the Bo…
isq:hasUnit	J/K (joule per kelvin)kgm^2s^(-2)*K^(-1) (kilogram square metre per second squared kelvin)
isq:hasDimension	isq:Dimension
smart:hasBindingnessType	bindingness-type:normative
dcterms:isPartOf	isq:part-5

Related Entities

isq:QuantityShape isq:part-5 isq:Unit isq:Dimension isq:hasDimension smart:TermEntry