Matthias Goerner shows me his oscilloscope-generated knot art, made entirely by analog means. Our discussion about what "analog" means: https://www.youtube.com/watch?v=j2YCGE7FXj8 Circuit diagrams: https://unhyperbolic.org/knotifier.html 0:00 Intro 3:14 What is knotty analog oscilloscope art? 7:00 Oscilloscope as Etch-A-Sketch 8:43 Integrator 10:24 Drawing a circle 14:17 Spirographs 16:39 Drawing a torus knots 22:00 Lissajous figures 23:23 Introduction to twist knots 24:23 Voltage controlled oscillator 26:53 Drawing with a voltage controlled oscillator 27:25 Analog synthesizers 29:30 Skeleton of a twist knot 31:16 Taking the picture