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        constant:
      
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constant:CharacteristicImpedanceOfVacuum
    
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http://qudt.org/vocab/constant/CharacteristicImpedanceOfVacuum

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http://qudt.org/vocab/constant/

Recommended prefix

constant:

rdf: type

qudt:PhysicalConstant

rdfs: label

lang:en

characteristic impedance of vacuum

dcterms: description

lang:""

The impedance of free space, Z0, is a physical constant relating the magnitudes of the electric and magnetic fields of electromagnetic radiation travelling through free space. That is, Z0 = |E|/|H|, where |E| is the electric field strength and |H| magnetic field strength. It has an exact value, given approximately as 376.73031 ohms. The impedance of free space equals the product of the vacuum permeability or magnetic constant μ0 and the speed of light in vacuum c0. Since the numerical values of the magnetic constant and of the speed of light are fixed by the definitions of the ampere and the metre respectively, the exact value of the impedance of free space is likewise fixed by definition and is not subject to experimental error. [Wikipedia]

qudt: dbpediaMatch

lang:""

http://dbpedia.org/resource/Impedance_of_free_space

qudt: exactConstant

lang:""

true

qudt: hasQuantityKind

quantitykind:Resistance

qudt: informativeReference

lang:""

http://physics.nist.gov/cuu/Constants/bibliography.html

qudt: quantityValue