Angular wavenumber is inverse wavelength

Angular wavenumber is the spatial frequency of a wave in classical wave theory.

Conditions:

  1. The wave is monochromatic (single, well-defined wavelength).

Links:

  1. Wikipedia – Wavenumber

angular_wavenumber

angular_wavenumber of the wave.

Symbol:

k

Latex:

\(k\)

Dimension:

angle/length

wavelength

wavelength of the wave.

Symbol:

lambda

Latex:

\(\lambda\)

Dimension:

length

definition

k = 2 * pi / lambda

Latex:
\[k = \frac{2 \pi}{\lambda}\]