Physics
Cyclotron Drift (E×B)
r(t) = (cos ωt + v_d t, sin ωt)
A charge in crossed electric and magnetic fields gyrates in tight circles while the whole orbit drifts steadily perpendicular to both fields.
Computed & rendered in pure C# on the frozen OnlyCSharp 1.8 library — animation baked to GIF with the library's own
Gif encoder (no GPU, no ffmpeg, no external packages).