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Illustration Wave Number of a Sinusoidal Wave

Wave Number of a Sinusoidal Wave
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Shown is a sinusoidal wave as a function of the location \(x\). The wavenumber \(\nu\) indicates how often the wavelength fits into one meter. For the shown sine wave, 2 and 1/2 wavelengths are within one meter, so the wavenumber is \(\nu = 2.5 \, \frac{1}{\mathrm m}\).