Translations:Dictionary:Fourier transform/52/en

${\tilde {F}}(\mathbf {k} ,\omega )=\int _{-\infty }^{\infty }\int _{-\infty }^{\infty }\int _{-\infty }^{\infty }\int _{0}^{\infty }f(\mathbf {x} ,t)e^{-i(\mathbf {k} \cdot \mathbf {x} -\omega t)}\;dt\,d^{3}x$