Part 11: Characteristic Numbers·115 entries

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11-8.19

Naze number

URNurn:iso:std:iso:80000:-11:ed-2:en:item:11-8.19

https://metanorma.github.io/isq-smart/quantities/part-11/t11-8.19
urn:iso:std:iso:80000:-11:ed-2:en:item:11-8.19

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-11:ed-2:en:item:11-8.19

IEC

urn:iec:std:iec:80000-11:2019:::item:11-8.19

Designations

ENNaze number

FRnombre de Naze

Symbol

N a

Notation systems

Rendered

N a

AsciiMath

Na

LaTeX

N a

Definition

quotient of velocity of Alfvén waves and velocity of sound in a plasma, expressed by

$N a = B / (c \sqrt{ρ μ})$ ; where

$B$ :: is magnetic flux density (IEC 80000-6: Electromagnetism),

$c$ :: is speed of sound (ISO 80000-8: Acoustics),

$ρ$ :: is mass density (ISO 80000-4: Mechanics), and

$μ$ :: is magnetic permeability (IEC 80000-6: Electromagnetism)

quotient de la vitesse des ondes d'Alfvén par la vitesse du son dans un plasma, exprimé par:

$N a = B / (c \sqrt{ρ μ})$ ; où

$B$ :: est l'induction magnétique (IEC 80000-6: Electromagnetism);

$c$ :: est la vitesse du son (ISO 80000-8: Acoustics);

$ρ$ :: est la masse volumique (ISO 80000-4: Mechanics); et

$μ$ :: est la perméabilité (IEC 80000-6: Electromagnetism)

Notes

The quantity $v_{A} = B / \sqrt{ρ μ}$ is called Alfvén wave speed. See Alfvén number.

La grandeur $v_{A} = B / \sqrt{ρ μ}$ est appelée vitesse des ondes d'Alfvén. Voir Alfvén number.

Concept HierarchyPendrill (2024)

1dimensionless quantitiesLevel 0 · Kind

Broader concepts

◇ dimensionless 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:t11-8.19

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	11-8.19
skosxl:prefLabel	"Naze number"@en
skosxl:altLabel	"Na"@en
skos:definition	quotient of velocity of Alfvén waves and velocity of sound in a plasma, expressed by stem:[Na = B // (c sqrt(rho mu))];…
skos:note	The quantity stem:[v_"A" = B // sqrt(rho mu)] is called Alfvén wave speed. See <<t11-8.4>>.
isq:hasDimension	isq:Dimension
smart:hasBindingnessType	bindingness-type:normative
dcterms:isPartOf	isq:part-11

Related Entities

isq:QuantityShape isq:part-11 isq:Unit isq:Dimension isq:hasDimension smart:TermEntry