Send a signal. Shape its journey. Watch invisible fields become visible.
This two-dimensional Maxwell field model advances an electric component and two magnetic components on a staggered grid. Teal and coral show opposite electric-field signs; brightness shows strength.
Try this: In Double slit, watch two openings become two new wave sources. In Glass lens, compare the curved front inside the glass with the front in vacuum. Paint a wall, then erase a doorway.
The edge sponge absorbs outgoing waves. The model uses normalized units and is an educational approximation, not an engineering design tool.
Keyboard: focus the field, arrows move the ring, Enter paints. Space pauses, N advances one step, C clears waves. All data stays on this device.
Adapted from RobinKa/maxwell-simulation · MIT. Source and notices are included in this release.