Module waves 

Electromagnetic wave propagation — plane waves, spherical waves, Gaussian beams, wave packets, interference, diffraction, and Snell’s law.

Structs

GaussianBeam

Gaussian beam with a finite waist (focused beam).

PlaneWave

Plane electromagnetic wave: E and B perpendicular to propagation direction.

SphericalWave

Spherical electromagnetic wave emanating from a point source with 1/r decay.

WavePacket

Wave packet with a finite bandwidth (group velocity envelope).

WaveRenderer

Renderer for EM waves as animated color/brightness patterns.

Functions

diffraction_single_slit

Single-slit diffraction intensity pattern (Fraunhofer). Returns normalized intensity at angle angle for given slit width and wavelength.

fresnel_coefficients

Fresnel coefficients for reflection and transmission (s-polarization, intensity). Returns (reflectance, transmittance).

interference_pattern

Compute the interference pattern of two plane waves at a set of points.

snells_law

Compute the refracted angle using Snell’s law: n1sin(θ_i) = n2sin(θ_t). Returns None for total internal reflection.

standing_wave

Standing wave: superposition of two counter-propagating waves.