rdf:type |
qudt:QuantityKind |
dcterms:description |
"wavenumber" is the spatial frequency of a wave - the number of waves that exist over a specified distance. More formally, it is the reciprocal of the wavelength. It is also the magnitude of the wave vector. |
qudt:applicableUnit |
|
qudt:hasDimensionVector |
qkdv:A0E0L-1I0M0H0T0D0 |
qudt:informativeReference |
http://en.wikipedia.org/wiki/Wavenumber |
qudt:isoNormativeReference |
http://www.iso.org/iso/catalogue_detail?csnumber=31897 |
qudt:latexDefinition |
\(k = \frac{2\pi}{\lambda}= \frac{2\pi\upsilon}{\upsilon_p}=\frac{\omega}{\upsilon_p}\), where \(\upsilon\) is the frequency of the wave, \(\lambda\) is the wavelength, \(\omega = 2\pi \upsilon\) is the angular frequency of the wave, and \(\upsilon_p\) is the phase velocity of the wave.
Alternatively:
\(k = \frac{p}{\hbar}\), where \(p\) is the linear momentum of quasi free electrons in an electron gas and \(\hbar\) is the reduced Planck constant (\(h\) divided by \(2\pi\)); for phonons, its magnitude is \(k = \frac{2\pi}{\lambda}\), where \(\lambda\) is the wavelength of the lattice vibrations. |
qudt:plainTextDescription |
“"wavenumber" is the spatial frequency of a wave - the number of waves that exist over a specified distance. More formally, it is the reciprocal of the wavelength. It is also the magnitude of the wave vector.” |
qudt:symbol |
“k” |
qudt:wikidataMatch |
http://www.wikidata.org/entity/Q30338487 |
rdfs:comment |
“Applicable units are those of quantitykind:AngularWavenumber” |
rdfs:isDefinedBy |
http://qudt.org/3.1.10/vocab/quantitykind |
rdfs:label |
Show 10 values
- “Kreisrepetenz”@de
- “angular wavenumber”@en
- “liczba falowa kątowa”@pl
- “nombre d'onde angulaire”@fr
- “numero d'onda angolare”@it
- “número de onda angular”@es
- “número de onda angular”@pt
- “عدد موجى زاوى”@ar
- “角波数”@ja
- “角波数”@zh
|
skos:altLabel |
- “Kreiswellenzahl”@de
- “angular repetency”@en
- “repetencja kątowa”@pl
- “repetência angular”@pt
- “répétence angulaire”@fr
- “تكرار زاوى”@ar
|
skos:broader |
quantitykind:InverseLength |
vaem:todo |
“belongs to SOQ-ISO” |
