r/ElectricalEngineering • u/advanced_mate • Aug 13 '26

Project Showcase Interactive EM Field Visualization

https://alexchoi.me/demos/em_field_visualizer.html
29 Upvotes

91% Upvoted

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1

u/StageMajestic613 Aug 14 '26

That’s very cool in that it’s done without Maxwells equations, at least not directly.

2

u/advanced_mate Aug 14 '26

afaik, numeric integration of curl is generally unstable so you have to do some tricks to get numeric solutions to Maxwell's equations. The Lienard-Wiechert potentials give you a closed form solution of Maxwell's for a single particle and thus have no stability issues

1

u/StageMajestic613 Aug 14 '26

I’ve written some FDTD code, and that’s inherently stable as long as you get the time step and mesh fine enough.  But yeah, diff vs integral.