The only donuts I now abut are these ones on PBS https://www.pbs.org/show/how-she-rolls/
You have infected my logic, my dear engineer. This interest has intensified and drifted more intelligible (in my own theory basin) over several years now. In time (if I live long enough) I hope to study the character of a rotary magnetic system harmonic <-- which Bill Beaty (CC) shared is a 4th impedance to appear on a rotary 3-phase Tesla coil experiment, which Bill shared off list (and maybe on-vortex-list, also?)As a fan of your work, Frank, naturally I'd be most intoxicated to discuss an analytic search for the Z-velocity. A conjecture of test... Perhaps the Coulombic Z-velocity will imprint its nature upon the 1/f frequency-drift of the noise-floor of the chaotic rotary magnetic oscillator (ring amp of resonant magnetic dipoles) <-- a copper array on a dielectric donut w/magnetic vector rotation at Z-velocity. (Digitally driven, and a state-machine design that could port to an FPGA or such providing a harmonic-lock on tracked anomalies <--as found to exist in the time-domain --w/soft-wired graphics.)
