Fourier Series Animation using Circles

Any periodic signal can be decomposed into a set of simple oscillating functions (also known as harmonics) via the application of Fourier series expansion. Here, we demonstrate a few harmonics using circles and how they add up to obtain the resulting function. Each circle spins at a multiple of a certain fundamental frequency. First, we show each harmonic individually and later show what they add up to and how the circles can be used for their visualization.

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