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7-24

photon exitance

URNurn:iso:std:iso:80000:-7:ed-2:en:item:7-24

https://metanorma.github.io/isq-smart/quantities/part-7/t7-24
urn:iso:std:iso:80000:-7:ed-2:en:item:7-24

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-7:ed-2:en:item:7-24

IEC

urn:iec:std:iec:80000-7:2019:::item:7-24

Designations

ENphoton exitance

FRexitance photonique

Symbol

M_{p}

(M)

Notation systems

Rendered

M_{p}

Rendered

(M)

AsciiMath

M_"p"

AsciiMath

(M)

LaTeX

M_{\text{p}}

LaTeX

( M )

Definition

density of exiting photon flux with respect to area at a point on a real or imaginary surface, expressed by

M_{p} = \frac{d Φ_{p}}{d A}

where $Φ_{p}$ is photon flux (photon flux) and $A$ is the area (ISO 80000-3: Space and time) from which the photon flux leaves

dérivée du flux photonique sortant par rapport à l'aire, en un point d'une surface réelle ou fictive, exprimée par

M_{p} = \frac{d Φ_{p}}{d A}

où $Φ_{p}$ est le flux photonique (photon flux) et $A$ est l'aire (ISO 80000-3: Space and time) de la surface quittée par le flux photonique

Units

m^{- 2} \cdot s^{- 1}

per square metre second

View related quantities →

Notes

The corresponding radiometric quantity is "radiant exitance" (radiant exitance). The corresponding photometric quantity is "luminous exitance" (luminous exitance).

La grandeur radiométrique correspondante est l'«exitance énergétique» (radiant exitance). La grandeur photométrique correspondante est l'«exitance lumineuse» (luminous exitance).

Referenced by

radiant exitance luminous exitance

Concept HierarchyPendrill (2024)

L⁻² T⁻¹L⁻² T⁻¹ quantitiesLevel 0 · Kind

Broader concepts

◇ L⁻² T⁻¹ 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:t7-24

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	7-24
skosxl:prefLabel	"photon exitance"@en
skosxl:altLabel	"M_"p""@en"(M)"@en
skos:definition	density of exiting photon flux with respect to area at a point on a real or imaginary surface, expressed by [stem%unnum…
skos:note	The corresponding radiometric quantity is "radiant exitance" (<<t7-8.1>>). The corresponding photometric quantity is "lu…
isq:hasUnit	m^(-2)*s^(-1) (per square metre second)
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