(Q269492)

English

impedance of vacuum

physical constant relating the magnitudes of the electric and magnetic fields of electromagnetic radiation travelling through free space

vacuum impedance
characteristic impedance of vacuum
Planck impedance
impedance of free space
wave impedance in vacuum

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Statements

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{\mathsf {L}}^{2}{\mathsf {M}}{\mathsf {T}}^{-3}{\mathsf {I}}^{-2}

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numeric value

376.730313461 ohm

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stated in

reference URL

https://physics.nist.gov/cgi-bin/cuu/Value?z0

retrieved

4 October 2017

defining formula

Z_{0}=c_{0}\mu _{0}

1 reference

stated in

IEC 80000-6:2022 Quantities and units — Part 6: Electromagnetism

section, verse, paragraph, or clause

6-51.2

Z_{0}={\sqrt {\frac {\mu _{0}}{\varepsilon _{0}}}}

1 reference

stated in

International Electrotechnical Vocabulary

IEV number

705-03-24

Z_{0}={\frac {|{\boldsymbol {E}}|}{|{\boldsymbol {H}}|}}

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in defining formula

Z_{0}

symbol represents

impedance of vacuum

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\mu _{0}

symbol represents

magnetic constant

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c_{0}

symbol represents

speed of light in vacuum

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\varepsilon _{0}

symbol represents

permittivity of vacuum

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{\boldsymbol {E}}

symbol represents

electric field strength

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{\boldsymbol {H}}

symbol represents

magnetic field strength

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|{\boldsymbol {a}}|

symbol represents

vector length

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quantity symbol (LaTeX)

Z_{0}

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stated in

IEC 80000-6:2022 Quantities and units — Part 6: Electromagnetism

section, verse, paragraph, or clause

6-51.2

described by source

IEC 80000-6:2022 Quantities and units — Part 6: Electromagnetism

section, verse, paragraph, or clause

6-51.2

subject named as

impedance of vacuum

wave impedance in vacuum

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maintained by WikiProject

WikiProject Mathematics

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recommended unit of measurement

volt per ampere

1 reference

stated in

IEC 80000-6:2022 Quantities and units — Part 6: Electromagnetism

section, verse, paragraph, or clause

6-51.2

kilogram square metre per cubic second square ampere

1 reference

stated in

IEC 80000-6:2022 Quantities and units — Part 6: Electromagnetism

section, verse, paragraph, or clause

6-51.2

Identifiers

1 reference

28 October 2013

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Microsoft Academic ID

56377706

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NIST/CODATA ID

z0

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Wolfram Language entity code

Entity["PhysicalConstant", "VacuumImpedance"]

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Wolfram Language unit code

"VacuumImpedance"

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Sitelinks

Wikipedia(18 entries)

arwiki معاوقة الفراغ
cawiki Impedància característica del buit
cswiki Impedance vakua
dewiki Wellenwiderstand des Vakuums
enwiki Impedance of free space
eowiki Impedanco de libera spaco
eswiki Impedancia característica del vacío
fawiki امپدانس فضای تهی
frwiki Impédance caractéristique du vide
hiwiki निर्वात की प्रतिबाधा
hywiki Վակուումի դիմադրություն
idwiki Impedansi ruang hampa
itwiki Impedenza caratteristica del vuoto
ptwiki Impedância característica do vácuo
ruwiki Волновое сопротивление вакуума
trwiki Boşluğun empedansı
ukwiki Хвильовий опір вакууму
zhwiki 自由空間阻抗

(Q269492)

impedance of vacuum

Statements

Identifiers

Sitelinks

Wikipedia(18 entries)

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