66 / 66

7-37

molar absorption coefficient

URNurn:iso:std:iso:80000:-7:ed-2:en:item:7-37

https://metanorma.github.io/isq-smart/quantities/part-7/t7-37
urn:iso:std:iso:80000:-7:ed-2:en:item:7-37

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-7:ed-2:en:item:7-37

IEC

urn:iec:std:iec:80000-7:2019:::item:7-37

Designations

ENmolar absorption coefficient

FRcoefficient d'absorption molaire

Symbol

χ

Notation systems

Rendered

χ

AsciiMath

chi

LaTeX

\chi

Definition

product of linear absorption coefficient and molar volume, expressed by

χ = α V_{m}

where $α$ is linear absorption coefficient (linear absorption coefficient <radiometry>) and $V_{m}$ is molar volume (ISO 80000-9: Physical chemistry and molecular physics)

produit du coefficient d'absorption linéique par le volume molaire, exprimé par

χ = α V_{m}

où $α$ est le coefficient d'absorption linéique (linear absorption coefficient <radiometry>) et $V_{m}$ est le volume molaire (ISO 80000-9: Physical chemistry and molecular physics)

Units

m^{2} \cdot m o l^{- 1}

square metre per mole

View related quantities →

Notes

The molar absorption coefficient can also be expressed by

χ = α c

where $c$ is amount-of-substance concentration (ISO 80000-9: Physical chemistry and molecular physics).

Similarly, luminous and photon quantities can be defined.

Le coefficient d'absorption molaire peut également être exprimé par

χ = α c

où $c$ est la concentration en quantité de matière (ISO 80000-9: Physical chemistry and molecular physics).

On peut définir de même des grandeurs lumineuses et photoniques.

Concept HierarchyPendrill (2024)

L² N⁻¹L² N⁻¹ quantitiesLevel 0 · Kind

Broader concepts

◇ L² N⁻¹ quantities

Characterizes

● photon● substance

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:t7-37

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	7-37
skosxl:prefLabel	"molar absorption coefficient <radiometry>"@en
skosxl:altLabel	"chi"@en
skos:definition	product of linear absorption coefficient and molar volume, expressed by [stem%unnumbered] ++++ chi = alpha V_"m" ++++ …
skos:note	The molar absorption coefficient can also be expressed by [stem%unnumbered] ++++ chi=alpha c ++++ where stem:[c] is am…
isq:hasUnit	m^2*mol^(-1) (square metre per mole)
isq:hasDimension	isq:Dimension
smart:hasBindingnessType	bindingness-type:normative
dcterms:isPartOf	isq:part-7

Related Entities

isq:QuantityShape isq:part-7 isq:Unit isq:Dimension isq:hasDimension smart:TermEntry