https://video.joostrekveld.net/videos/watch/68b5b7f1-3703-4cf3-9ee9-b143a431d18d Experiments from 2017 exploring Wang's chaotic four-scroll oscillator on an EAI TR-48 analog computer from 1963 in fast rep-op mode. Parameter 'a' is appr. 3.5, and 'b' is being varied from 0.0 to appr. 0.8. The calculation is reset appr. twice a second and the trajectory is manually rotated around the X-axis from time to time, to get a sense of the 3d shape of the attractor. The TR-48 is not really designed for these speeds, so the calculation and parameter values are less precise than usual, due to the difference in frequency response of the various modules. The clip ends with an amplifier overload for that reason. The equations are: ẋ = x − yz ẏ = x − by + xz ż = −az + xy Thu, 03 Sep 2026 03:04:13 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://video.joostrekveld.net https://video.joostrekveld.net/lazy-static/avatars/e35ea6d1-b888-421d-b49f-14ee9051e5ed.jpg https://video.joostrekveld.net/videos/watch/68b5b7f1-3703-4cf3-9ee9-b143a431d18d All rights reserved, unless otherwise specified in the terms specified at https://video.joostrekveld.net/about and potential licenses granted by each content's rightholder.