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Part 77-4.2

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Part 7: Light and Radiation·66 entries

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Section 7-42 entries

7-4.1radiant flux, radiant power 7-4.2spectral radiant flux, spectral radiant power

7-4.2

spectral radiant flux, spectral radiant power

URNurn:iso:std:iso:80000:-7:ed-2:en:item:7-4.2

Download RDF.jsonld .ttl

https://metanorma.github.io/isq-smart/quantities/part-7/t7-4.2
urn:iso:std:iso:80000:-7:ed-2:en:item:7-4.2

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-7:ed-2:en:item:7-4.2

IEC

urn:iec:std:iec:80000-7:2019:::item:7-4.2

Designations

ENspectral radiant flux

FRflux énergétique spectrique

ENspectral radiant power

FRpuissance rayonnante spectrique

Symbol

Φ_{e, λ}

P_{e, λ}

(Φ_{λ}, P_{λ})

Notation systems

Rendered

Φ_{e, λ}

Rendered

P_{e, λ}

Rendered

(Φ_{λ}, P_{λ})

AsciiMath

Phi_("e",lambda)

AsciiMath

P_("e",lambda)

AsciiMath

(Phi_lambda, P_lambda)

LaTeX

\Phi_{\text{e} , \lambda}

LaTeX

P_{\text{e} , \lambda}

LaTeX

( \Phi_{\lambda} , P_{\lambda} )

Definition

spectral density of radiant flux, expressed by

Φ_{e, λ} = \frac{d Φ_{e}}{d λ}

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

densité spectrale du flux énergétique, exprimée par

Φ_{e, λ} = \frac{d Φ_{e}}{d λ}

où $Φ_{e}$ est le flux énergétique (radiant flux) en fonction de la longueur d'onde $λ$ (ISO 80000-3: Space and time)

Units

\frac{W}{n} m

watt per nanometre

View related quantities →

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

kilogram metre per second cubed

View related quantities →

Notes

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

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

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

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

Referenced by

luminous efficiency <specified photometric condition>luminous flux

Concept HierarchyPendrill (2024)

L² M T⁻³power-type quantitiesLevel 0 · Kind

Broader concepts

◇ power-type 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:t7-4.2

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	7-4.2
skosxl:prefLabel	"spectral radiant flux"@en
skosxl:altLabel	"spectral radiant power"@en"Phi_("e",lambda)"@en"P_("e",lambda)"@en"(Phi_lambda, P_lambda)"@en
skos:definition	spectral density of radiant flux, expressed by [stem%unnumbered] ++++ Phi_("e",lambda) = ("d" Phi_"e")/("d"lambda) ++++…
skos:note	The integral of (total) radiant flux is determined by the wavelength interval stem:[(lambda_1, lambda_2)] under consider…
isq:hasUnit	W/nm (watt per nanometre)kgms^(-3) (kilogram metre per 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

Definition

Units

Notes

Referenced by

Broader concepts

Ontology isq:Quantitysmart:TermEntry

Class Hierarchy

Instance IRI

Properties

Related Entities

Ontology
isq:Quantity smart:TermEntry