Optics

Geometrical Optics

Etendue

Pinhole Cameras

See projective geometry

Thin Lens

Snell’s law

Thick Lens

Microscopes

Telescopes

Physical Optics

Etendue 2

Numericsl Aperture

Wavevector

Wavevectors match across boundaries. This is more geoemtry than physics or differential equations Moire Patterns

Diffraction

Single and Double Near Field Fraunhofer Analogies with Quantum Mechanics

Interference

Fourier Optics