Section 7-322 entries
7-32.1
transmittance optical density, optical density, transmittance density, decadic absorbance
https://metanorma.github.io/isq-smart/quantities/part-7/t7-32.1 urn:iso:std:iso:80000:-7:ed-2:en:item:7-32.1
ISQ Identifiers
ISO
urn:iso:std:iso:80000:-7:ed-2:en:item:7-32.1IEC
urn:iec:std:iec:80000-7:2019:::item:7-32.1Designations
ENtransmittance optical density
FRdensité optique par transmission
ENoptical density
FRdensité optique
ENtransmittance density
FRdensité de transmittance
ENdecadic absorbance
FRabsorbance
Symbol
Notation systems
Rendered
Rendered
Rendered
AsciiMath
DAsciiMath
A_(10)AsciiMath
D_tauLaTeX
DLaTeX
A_{10}LaTeX
D_{\tau}Definition
EN
logarithm to base 10 of the reciprocal of the transmittance, (transmittance)
FR
logarithme à base dix de l'inverse du facteur de transmission, (transmittance)
Notes
EN
If defined in terms of wavelength, the optical density can be expressed by
where is the transmittance (transmittance) in terms of wavelength.
In spectroscopy, the name "absorbance " is generally used.
FR
Si elle est définie en fonction de la longueur d'onde, la densité optique peut être exprimée par
où est le facteur de transmission (transmittance) en fonction de la longueur d'onde.
En spectroscopie, le nom «absorbance » est généralement utilisé.
Ontology
Class Hierarchy
A physical quantity as defined in ISO/IEC 80000, with associated symbols, definitions, and units of measurement.
Instance IRI
isq:t7-32.1Properties
| Property | Value |
|---|---|
| rdf:type | |
| dcterms:identifier | 7-32.1 |
| skosxl:prefLabel | "transmittance optical density"@en |
| skosxl:altLabel | "optical density"@en"transmittance density"@en"decadic absorbance"@en"D"@en"A_(10)"@en"D_tau"@en |
| skos:definition | logarithm to base 10 of the reciprocal of the transmittance, stem:[tau] (<<t7-31.5>>) |
| skos:note | If defined in terms of wavelength, the optical density can be expressed by
[stem%unnumbered]
++++
A_(10)(lambda) = -"lg… |
| isq:hasUnit | |
| isq:hasDimension | |
| smart:hasBindingnessType | |
| dcterms:isPartOf |