Ingenious use of concepts and color to help explain the formula for the (inverse) Fourier Transform. Devised by graphics/systems programmer Stuart Riffle, he includes a scale factor 1/N and as he has explained deals with the inverse of the Fourier Transform, but this is still clever. Similar to Epps' geometric explanation of the Characteristic Function in probability theory, that we illustrated some time ago with a cut-out from a CD canister.
Via Revolutions Analytics via Stuart Riffle post on i-programmer.
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