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7-20

photon flux

URNurn:iso:std:iso:80000:-7:ed-2:en:item:7-20

https://metanorma.github.io/isq-smart/quantities/part-7/t7-20
urn:iso:std:iso:80000:-7:ed-2:en:item:7-20

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-7:ed-2:en:item:7-20

IEC

urn:iec:std:iec:80000-7:2019:::item:7-20

Designations

ENphoton flux

FRflux photonique

Symbol

Φ_{p}

(Φ)

Notation systems

Rendered

Φ_{p}

Rendered

(Φ)

AsciiMath

Phi_"p"

AsciiMath

(Phi)

LaTeX

\Phi_{\text{p}}

LaTeX

( \Phi )

Definition

rate of photon number per time interval, expressed by

Φ_{p} = \frac{d N_{p}}{d t}

where $N_{p}$ is photon number (e.g. given by photon number), transmitted or received, and $t$ is time (ISO 80000-3: Space and time)

variation du nombre de photons dans le temps, exprimée par

Φ_{p} = \frac{d N_{p}}{d t}

où $N_{p}$ est le nombre de photons (par exemple donné par photon number), transportés ou reçus, et $t$ est le temps (ISO 80000-3: Space and time)

Units

s^{- 1}

per second

View related quantities →

Notes

Photon flux $Φ_{p}$ is related to radiant flux (radiant flux), $Φ_{e}$ , of monochromatic radiation, by

Φ_{p} = \frac{Φ_{e}}{h ν}

where $h$ is the Planck constant (ISO 80000-1), and $ν$ is the frequency (ISO 80000-3: Space and time) of the corresponding electromagnetic wave.

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

Le flux photonique $Φ_{p}$ est relié au flux énergétique (radiant flux), $Φ_{e}$ , d'un rayonnement monochromatique par

Φ_{p} = \frac{Φ_{e}}{h ν}

où $h$ est la constante de Planck (ISO 80000-1), et $ν$ est la fréquence (ISO 80000-3: Space and time) de l'onde électromagnétique correspondante.

La grandeur radiométrique correspondante est le «flux énergétique» (radiant flux). La grandeur photométrique correspondante est le «flux lumineux» (luminous flux).

Referenced by

radiant flux luminous flux photon number photon intensity photon irradiance photon exitance

Concept HierarchyPendrill (2024)

T⁻¹frequency-type quantitiesLevel 0 · Kind

Broader concepts

◇ frequency-type quantities

Characterizes

● photon● wave

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:t7-20

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	7-20
skosxl:prefLabel	"photon flux"@en
skosxl:altLabel	"Phi_"p""@en"(Phi)"@en
skos:definition	rate of photon number per time interval, expressed by [stem%unnumbered] ++++ Phi_"p" = ("d"N_"p")/("d"t) ++++ where st…
skos:note	Photon flux stem:[Phi_"p"] is related to radiant flux (<<t7-4.1>>), stem:[Phi_"e"], of monochromatic radiation, by [ste…
isq:hasUnit	s^(-1) (per 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