Wave Number of Periodic Wave/Examples

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Examples of Use of Wave Number of Periodic Wave

Harmonic Wave

Let $\phi$ be a harmonic wave expressed as:

$\forall x, t \in \R: \map \phi {x, t} = a \map \cos {\omega \paren {x - c t} }$


The wave number $k$ of $\phi$ can be expressed as:

$k = \dfrac 1 \lambda$

where $\lambda$ is the wavelength of $\phi$.