Wave - WKB Method

WKB Method

Main article: WKB method See also: Slowly varying envelope approximation

In a nonuniform medium, in which the wavenumber k can depend on the location as well as the frequency, the phase term kx is typically replaced by the integral of k(x)dx, according to the WKB method. Such nonuniform traveling waves are common in many physical problems, including the mechanics of the cochlea and waves on hanging ropes.

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Billow - WKB Method
... Main article WKB method See also Slowly varying envelope approximation In a nonuniform medium, in which the wavenumber k can depend on the location as well as the frequency, the phase term kx is typically ...

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