Effective Medium Calculator
Predict effective refractive index of composite or porous coatings using three classical mixing rules.
Validation: 10 / 10 reference cases passing in build 378ef4c → /validation#effective-medium
Computes ε_eff and n_eff via Maxwell-Garnett, Bruggeman (positive root of the quadratic), and Lorentz-Lorenz from matrix RI, inclusion RI, and volume fraction. Shows the selected model's outputs, side-by-side comparison of all three, and an SVG plot of n_eff vs φ across all three models with a vertical marker at the current φ.