Physics
EM wave (FDTD)
Maxwell's equations on a grid: ripples, double-slit interference, a dielectric lens.
What happens
Maxwell's equations solved live on a grid: watch electromagnetic ripples spread from a point source, squeeze through a double slit into an interference pattern, or bend through a dielectric lens to a focus. The detector chart records the field arriving at the far side, fringes and all.
Equations used in the module
Equations ∇×E = −∂B/∂t; ∇×H = ∂D/∂t + J D = εE; B = μH c Δt ≤ Δx/√2 U ∝ Σ(ε E² + μ H²)
