Although having nothing to do with signal processing, solving one version of this phenomenon relies on finding the Fourier transform of the rect function.
Although having nothing to do with signal processing, solving one version of this phenomenon relies on finding the Fourier transform of the rect function. A mathematical formalism of it takes the Green's function of Helmholtz's equation, then substituting into that formalism's namesake integral theorem; that formalism is Kirchoff's scalar theory of this process. Its knife-edge version is governed by a rule stating that every point of a front is the source of a spherical wave, called (*) Huygens principle. This phenomenon creates the Arago spot when occurring through a circular aperture, a setup described by the formula 1.22 times lambda over D, which also gives the Rayleigh criterion for the limit of resolution imposed by this phenomenon. For 10 points, name this effect in which light bends around an object.
Although having nothing to do with signal processing, solving one version of this phenomenon relies on finding the Fourier transform of the rect function.
diffraction [prompt on \"interference\"]