I don't know if you're familiar with the 3blue1brown YouTube Channel, but he does an outrageously good job of explaining this mechanism in about 20 minutes. Search YouTube for "3b1b de4" and it should be the first video: "But what is a Fourier series? From heat flow to drawing with circles".
vivzkestrel · · focus · HN ↗
- are all circles supposed to be one inside another?
- is each circle always going to rotate around the bigger circle?
joedrago · · focus · HN ↗