Everything about Wavenumber totally explained
Wavenumber in most
physical sciences is a
wave property
inversely related to
wavelength, having
SI units of reciprocal
meters (m
−1). Wavenumber is the
spatial analog of
frequency, that is, it's the
measurement of the number of repeating units of a propagating wave (the number of times a wave has the same
phase) per unit of space. Application of a
Fourier transformation on data as a function of time yields a
frequency spectrum; application on data as a function of position yields a wavenumber spectrum. The exact definition varies depending on the field of study.
In spectroscopy
In
spectroscopy, the wavenumber
Here
is the
momentum of the particle,
is the
mass of the particle,
is the
kinetic energy of the particle, and
is the
reduced Planck's constant.
In atmospheric science
Wavenumber in
atmospheric science is defined as length of the spatial domain divided by the
wavelength, or equivalently the number of times a wave has the same
phase over the spatial domain. The domain might be 2π for the non-dimensional case, or
»
for an
atmospheric wave, where
R is
Earth's radius and φ is latitude.
Wavenumber-frequency diagrams are a common way of visualizing
atmospheric waves.
Further Information
Get more info on 'Wavenumber'.
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