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- W2039656883 abstract "Explicit sequences that approach the Dirac delta function and its derivatives are often helpful in presenting generalized functions. We present a method by which a finite difference formula may be easily converted into a sequence that approaches a derivative of the Dirac delta function in one dimension. In three dimensions, we employ a sequence for the Dirac delta function based on a uniformly charged sphere of infinitesimal radius and infinite charge density and show that the charge density of an electric dipole is (in the sense of a generalized function) equal to −(∂/∂z)δ3(r). We use this result to derive Gauss’ law in a dielectric medium directly from the charge densities, without using the potentials." @default.
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- W2039656883 date "2003-04-10" @default.
- W2039656883 modified "2023-09-27" @default.
- W2039656883 title "Derivatives of the Dirac delta function by explicit construction of sequences" @default.
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- W2039656883 doi "https://doi.org/10.1119/1.1557302" @default.
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