et

lainearv

1 substantive

Terminological databases

Meteoroloogia ja klimatoloogia terminibaas

ID 524561 Last modified 21.11.2023
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Domain atmosphere - climatology - meteorology - magnetosphere

Metroloogia terminibaas

ID 573158 Last modified 01.10.2026
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Domain Standardisation - Metrology
lainearv
σ
wavenumber preferred
wave number
repetency variant
σ
  • lainepikkuse pöördväärtus, mille ühikuks on 1/m või rad/m
  • ISQ tuletatud suurus
  • spatial frequency of a wave, measured in cycles per unit distance or radians per unit distance
  • derived quantity ISQ
lainearv
Usage examples
  • Lainearv on analoogne sagedusega, mis on määratletud kui lainetsüklite arv ajaühikus (tavaline sagedus) või radiaani ajaühikus (nurksagedus).
σ symbol
wavenumber preferred
Usage examples
  • The wavenumber or wave number, also known as repetency, is the spatial frequency of a wave. Ordinary wavenumber is defined as the number of wave cycles divided by length; it is a physical quantity, expressed in SI units of cycles per metre or reciprocal metre (m−1). Wavenumber is analogous to temporal frequency, which is defined as the number of wave cycles per unit time (ordinary frequency) or radians per unit time (angular frequency).
wave number
repetency variant
σ symbol

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