Abstract

The simple apparatus based on geometrical optics described here allows both qualitative and quantitative verification of the main properties of convolution, correlation, or autocorrelation. These concepts are of considerable interest in several areas of physics and engineerings. Qualitative verifications are easily made by projection of convolution or correlation function on a screen. Quantitative verifications have been performed in the case of functions of one coordinate by recording convolution or correlation on an X–Y recorder.

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