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Section 7-22 entries

7-2.1radiant energy <electromagnetism>7-2.2spectral radiant energy

7-2.1

radiant energy

URNurn:iso:std:iso:80000:-7:ed-2:en:item:7-2.1

https://metanorma.github.io/isq-smart/quantities/part-7/t7-2.1
urn:iso:std:iso:80000:-7:ed-2:en:item:7-2.1

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-7:ed-2:en:item:7-2.1

IEC

urn:iec:std:iec:80000-7:2019:::item:7-2.1

Designations

ENradiant energy

FRénergie rayonnante <électromagnétisme>

Symbol

Q_{e}

W

U

(Q)

Notation systems

Rendered

Q_{e}

Rendered

W

Rendered

U

Rendered

(Q)

AsciiMath

Q_"e"

AsciiMath

W

AsciiMath

U

AsciiMath

(Q)

LaTeX

Q_{\text{e}}

LaTeX

W

LaTeX

U

LaTeX

( Q )

Definition

energy (ISO 80000-5: Thermodynamics) emitted, transferred or received in form of electromagnetic waves

énergie (ISO 80000-5: Thermodynamics) émise, transportée ou reçue sous forme d'ondes électromagnétiques

Units

J

joule

View related quantities →

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

kilogram square metre per second squared

View related quantities →

Notes

Radiant energy can be expressed by the time integral of radiant flux (radiant flux), $Φ_{e}$ , over a given duration (ISO 80000-3: Space and time), $Δ t$

Q_{e} = \int_{Δ t}^{} Φ_{e} d t

Radiant energy is expressed either as a function of wavelength (ISO 80000-3: Space and time), $λ$ , as a function of frequency (ISO 80000-3: Space and time), $ν$ , or as a function of wavenumber, $σ$ . (See also cls-0.1.)

The corresponding photometric quantity is "luminous energy" (luminous energy). The corresponding quantity for photons is "photon energy" (photon energy).

L'énergie rayonnante peut être exprimée par l'intégrale par rapport au temps du flux énergétique (radiant flux), $Φ_{e}$ , pendant une durée (ISO 80000-3: Space and time) donnée, $Δ t$

Q_{e} = \int_{Δ t}^{} Φ_{e} d t

L'énergie rayonnante est exprimée en fonction de la longueur d'onde (ISO 80000-3: Space and time), $λ$ , en fonction de la fréquence (ISO 80000-3: Space and time), $ν$ , ou en fonction du nombre d'onde, $σ$ . (Voir également cls-0.1.)

La grandeur photométrique correspondante est la «quantité de lumière» (luminous energy). La grandeur photonique correspondante est l'«énergie photonique» (photon energy).

Referenced by

spectral radiant energy radiant energy density radiant flux radiant exposure luminous energy photon number photon energy

Concept HierarchyPendrill (2024)

L² M T⁻²energy-type quantitiesLevel 0 · Kind

Broader concepts

◇ energy-type quantities

Characterizes

● photon

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:t7-2.1

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	7-2.1
skosxl:prefLabel	"radiant energy <electromagnetism>"@en
skosxl:altLabel	"Q_"e""@en"W"@en"U"@en"(Q)"@en
skos:definition	energy (<<iso80000-5>>) emitted, transferred or received in form of electromagnetic waves
skos:note	Radiant energy can be expressed by the time integral of radiant flux (<<t7-4.1>>), stem:[Phi_"e"], over a given duration…
isq:hasUnit	J (joule)kgm^2s^(-2) (kilogram square metre per second squared)
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

Characterizes

Ontology isq:Quantitysmart:TermEntry

Class Hierarchy

Instance IRI

Properties

Related Entities

Ontology
isq:Quantity smart:TermEntry