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Part 77-7.2

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Part 7: Light and Radiation·66 entries

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Section 7-72 entries

7-7.1irradiance 7-7.2spectral irradiance

7-7.2

spectral irradiance

URNurn:iso:std:iso:80000:-7:ed-2:en:item:7-7.2

Download RDF.jsonld .ttl

https://metanorma.github.io/isq-smart/quantities/part-7/t7-7.2
urn:iso:std:iso:80000:-7:ed-2:en:item:7-7.2

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-7:ed-2:en:item:7-7.2

IEC

urn:iec:std:iec:80000-7:2019:::item:7-7.2

Designations

ENspectral irradiance

FRéclairement énergétique spectrique

Symbol

E_{e, λ}

(E_{λ})

Notation systems

Rendered

E_{e, λ}

Rendered

(E_{λ})

AsciiMath

E_("e",lambda)

AsciiMath

(E_lambda)

LaTeX

E_{\text{e} , \lambda}

LaTeX

( E_{\lambda} )

Definition

density of irradiance with respect to wavelength, expressed by

E_{e, λ} = \frac{d E_{e}}{d λ}

where $E_{e}$ is irradiance (irradiance) in terms of wavelength $λ$ (ISO 80000-3: Space and time)

dérivée de l'éclairement énergétique par rapport à la longueur d'onde, exprimée par

E_{e, λ} = \frac{d E_{e}}{d λ}

où $E_{e}$ est l'éclairement énergétique (irradiance) en fonction de la longueur d'onde $λ$ (ISO 80000-3: Space and time)

Units

\frac{W}{m^{2} \cdot n m}

watt per square metre nanometre

View related quantities →

k g \cdot m^{- 1} \cdot s^{- 3}

kilogram per metre second cubed

View related quantities →

Notes

The integral of (total) irradiance is determined by the wavelength interval $(λ_{1}, λ_{2})$ under consideration:

E_{e} = \int_{λ_{1}}^{λ_{2}} E_{e, λ} d λ

L'intégrale de l'éclairement énergétique (total) est déterminée par l'intervalle de longueurs d'onde $(λ_{1}, λ_{2})$ considéré:

E_{e} = \int_{λ_{1}}^{λ_{2}} E_{e, λ} d λ

Referenced by

illuminance

Concept HierarchyPendrill (2024)

1dimensionless quantitiesLevel 0 · Kind

Broader concepts

◇ dimensionless quantities

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:t7-7.2

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	7-7.2
skosxl:prefLabel	"spectral irradiance"@en
skosxl:altLabel	"E_("e",lambda)"@en"(E_lambda)"@en
skos:definition	density of irradiance with respect to wavelength, expressed by [stem%unnumbered] ++++ E_("e",lambda) = ("d"E_"e")/("d"l…
skos:note	The integral of (total) irradiance is determined by the wavelength interval stem:[(lambda_1, lambda_2)] under considerat…
isq:hasUnit	W/(m^2nm) (watt per square metre nanometre)kgm^(-1)*s^(-3) (kilogram per metre second cubed)
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