Show HN: antennasim – Visualize Electromagnetism (antennasim.com)

I have been building this simulator for fun as a side project to help myself and others visualize electromagentic phenomena such as radiation, interference, coupling, polarization and diffraction. Sort of a sandbox to explore electromagnetism.

The simulator runs omn the browser and lets you: place multiple, diffrent radiation sources and set their parameters (geometery, amplitude, phase and more)

place perefect wire conductors, PEC plane and poke slots in the plane to create diffraction patterns

observe the electric field, magnetic field, energy flow field, energy density or radiation pattern

zoom in and out and translate the canvas

*change the simulation resolution, frequency and propogation speed and some other parameters

I hope someone might find it useful and I’d love to hear what people think :)

Live: https://www.antennasim.com/ GitHub: https://github.com/rotemTsafrir/antenna_sim