. "liczba falowa k\u0105towa"@pl . "http://www.iso.org/iso/catalogue_detail?csnumber=31897"^^ . "\u0639\u062F\u062F \u0645\u0648\u062C\u0649 \u0632\u0627\u0648\u0649"@ar . "numero d'onda angolare"@it . "r\u00E9p\u00E9tence angulaire"@fr . "\\(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.\n\nAlternatively:\n\n\\(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."^^ . "\"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." . "nombre d'onde angulaire"@fr . "k" . . "angular wavenumber"@en . "n\u00FAmero de onda angular"@pt . . "n\u00FAmero de onda angular"@es . . "\u062A\u0643\u0631\u0627\u0631 \u0632\u0627\u0648\u0649"@ar . "angular repetency"@en . "repet\u00EAncia angular"@pt . "Kreiswellenzahl"@de . "Kreisrepetenz"@de . . "\u89D2\u6CE2\u6570"@zh . "repetencja k\u0105towa"@pl . "\u89D2\u6CE2\u6570"@ja . "belongs to SOQ-ISO" . "http://en.wikipedia.org/wiki/Wavenumber"^^ .