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Part 33-23.1

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Part 3: Space and Time·42 entries

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Section 3-232 entries

3-23.1phase velocity, phase speed 3-23.2group velocity, group speed

3-23.1

phase velocity, phase speed

URNurn:iso:std:iso:80000:-3:ed-2:en:item:3-23.1

Download RDF.jsonld .ttl

https://metanorma.github.io/isq-smart/quantities/part-3/t3-23.1
urn:iso:std:iso:80000:-3:ed-2:en:item:3-23.1

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-3:ed-2:en:item:3-23.1

IEC

urn:iec:std:iec:80000-3:2019:::item:3-23.1

Designations

ENphase velocity

FRvitesse de phase

ENphase speed

FRvitesse de phase

Symbol

c, v, (v)

c_{φ}, v_{φ}, (v_{φ})

Notation systems

Rendered

c, v, (v)

Rendered

c_{φ}, v_{φ}, (v_{φ})

AsciiMath

c, ii(sf(v)), (v)

AsciiMath

c_varphi, ii(sf(v))_varphi, (v_varphi)

LaTeX

c , \mathit{\mathsf{v}} , ( v )

LaTeX

c_{\varphi} , \mathit{\mathsf{v}}_{\varphi} , ( v_{\varphi} )

Definition

speed with which the phase angle (phase angle) of a wave propagates in space

vitesse à laquelle l'angle de phase (phase angle) d'une onde se propage dans l'espace

Units

m \cdot s^{-} 1

metre per second

View related quantities →

Notes

The phase velocity is given by:

c = \frac{ω}{k}

where $ω$ denotes the angular frequency (angular frequency) and $k$ the angular repetency (angular repetency).

If phase velocities of electromagnetic waves and other phase velocities are both involved, then $c$ should be used for the former and $v$ for the latter.

Phase velocity can also be written as $c = λ f$ .

La vitesse de phase est donnée par:

c = \frac{ω}{k}

où $ω$ désigne la pulsation (angular frequency) et $k$ la répétance angulaire (angular repetency).

En présence à la fois de vitesses de phase d'ondes électromagnétiques et d'autres vitesses de phase, il convient alors d'utiliser $c$ pour les premières et $v$ pour les secondes.

La vitesse de phase peut s'écrire également $c = λ f$ .

Concept HierarchyPendrill (2024)

L T⁻¹velocity-type quantitiesLevel 0 · Kind

Broader concepts

◇ velocity-type quantities

Characterizes

● 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:t3-23.1

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	3-23.1
skosxl:prefLabel	"phase velocity"@en
skosxl:altLabel	"phase speed"@en"c, ii(sf(v)), (v)"@en"c_varphi, ii(sf(v))_varphi, (v_varphi)"@en
skos:definition	speed with which the phase angle (<<t3-7>>) of a wave propagates in space
skos:note	The phase velocity is given by: [stem%unnumbered] ++++ c = omega/k ++++ where stem:[omega] denotes the angular frequen…
isq:hasUnit	m*s^-1 (metre per second)
isq:hasDimension	isq:Dimension
smart:hasBindingnessType	bindingness-type:normative
dcterms:isPartOf	isq:part-3

Related Entities

isq:QuantityShape isq:part-3 isq:Unit isq:Dimension isq:hasDimension smart:TermEntry