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Part 66-26.1

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Part 6: Electromagnetism·85 entries

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Section 6-262 entries

6-26.1magnetic constant, permeability of vacuum 6-26.2permeability

6-26.1

magnetic constant, permeability of vacuum

URNurn:iec:std:iec:80000-6:2022-11:::6-26.1

Download RDF.jsonld .ttl

https://metanorma.github.io/isq-smart/quantities/part-6/t6-26.1
urn:iec:std:iec:80000-6:2022-11:::6-26.1

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-6:ed-1:en:item:6-26.1

IEC

urn:iec:std:iec:80000-6:2022-11:::item:6-26.1

Designations

ENmagnetic constant

FRconstante magnétique

ENpermeability of vacuum

FRperméabilité du vide

Symbol

μ_{0}

Notation systems

Rendered

μ_{0}

AsciiMath

mu_0

LaTeX

\mu_{0}

Definition

scalar quantity given by

$μ_{0} \approx 4 π \times 10^{- 7} unitsml(H/m)$ with a relative standard uncertainty of $2.3 \times 10^{- 10}$

grandeur scalaire donnée par

$μ_{0} \approx 4 π \times 10^{- 7} unitsml(H/m)$ avec une incertitude type relative de $2.3 \times 10^{- 10}$

Units

\frac{H}{m}

henry per metre

View related quantities →

k g \cdot m \cdot s^{- 2} \cdot A^{- 2}

kilogram metre per second squared ampere squared

View related quantities →

Notes

This quantity is considered to be constant in time.

The numerical value of the magnetic constant was originally exactly $4 π \times 10^{- 7}$ . It must be determined experimentally; see bipm-si.

See bipm-si and IEC 60050-121,locality:item="121-11-14".

Cette grandeur est considérée comme étant constante dans le temps.

La valeur numérique de la constante magnétique était à l'origine exactement égale à $4 π \times 10^{- 7}$ . Elle doit être déterminée de manière expérimentale; voir la brochure sur le bipm-si.

Voir la brochure sur le bipm-si et l'IEC 60050-121,droploc%locality:item="121-11-14".

Referenced by

electric constant magnetic field strength relative permeability magnetic polarization magnetic dipole moment

Concept HierarchyPendrill (2024)

L M T⁻² I⁻²L M T⁻² I⁻² quantitiesLevel 0 · Kind

Broader concepts

◇ L M T⁻² I⁻² quantities

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:t6-26.1

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	6-26.1
skosxl:prefLabel	"magnetic constant"@en
skosxl:altLabel	"permeability of vacuum"@en"mu_0"@en
skos:definition	scalar quantity given by stem:[mu_0 ~~ 4pi xx 10^(-7) "unitsml(H/m)"] with a relative standard uncertainty of stem:[2.3 …
skos:note	This quantity is considered to be constant in time. The numerical value of the magnetic constant was originally exactly…
isq:hasUnit	H/m (henry per metre)kgms^(-2)*A^(-2) (kilogram metre per second squared ampere squared)
isq:hasDimension	isq:Dimension
smart:hasBindingnessType	bindingness-type:normative
dcterms:isPartOf	isq:part-6

Related Entities

isq:QuantityShape isq:part-6 isq:Unit isq:Dimension isq:hasDimension smart:TermEntry