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7-25

photon exposure

URNurn:iso:std:iso:80000:-7:ed-2:en:item:7-25

https://metanorma.github.io/isq-smart/quantities/part-7/t7-25
urn:iso:std:iso:80000:-7:ed-2:en:item:7-25

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-7:ed-2:en:item:7-25

IEC

urn:iec:std:iec:80000-7:2019:::item:7-25

Designations

ENphoton exposure

FRexposition photonique

Symbol

H_{p}

(H)

Notation systems

Rendered

H_{p}

Rendered

(H)

AsciiMath

H_"p"

AsciiMath

(H)

LaTeX

H_{\text{p}}

LaTeX

( H )

Definition

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

H_{p} = \frac{d N_{p}}{d A}

where $N_{p}$ is photon number (photon number) and $A$ is the area (ISO 80000-3: Space and time) on which the photons are incident

dérivée du nombre de photons incidents par rapport à l'aire, en un point d'une surface réelle ou fictive, exprimée par

H_{p} = \frac{d N_{p}}{d A}

où $N_{p}$ est le nombre de photons (photon number) et $A$ est l'aire (ISO 80000-3: Space and time) de la surface qui reçoit les photons

Units

m^{- 2}

per square metre

View related quantities →

Notes

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

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

Referenced by

radiant exposure luminous exposure

Concept HierarchyPendrill (2024)

L⁻²L⁻² quantitiesLevel 0 · Kind

Broader concepts

◇ L⁻² 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:t7-25

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	7-25
skosxl:prefLabel	"photon exposure"@en
skosxl:altLabel	"H_"p""@en"(H)"@en
skos:definition	density of incident photon number with respect to area at a point on a real or imaginary surface, expressed by [stem%un…
skos:note	The corresponding radiometric quantity is "radiant exposure" (<<t7-9.1>>). The corresponding photometric quantity is "lu…
isq:hasUnit	m^(-2) (per square metre)
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