Visualizing the Fourier Series Using Circles : Square wave [gnuplot]

YouTube

Simulation [gnuplot]

Source code (PLT file)

Output (PNG file → GIF file)

$n=1,\ 3,\ 5$

$n=10,\ 20,\ 30$

External links

▶︎ Fourier series - Wikipedia
▶︎ Fourier Series Animation using Circles #fourier by meyavuz - YouTube