Linked from

The 53 pages that link to Geometrical optics, each with the reason it gives.

• HeiligenscheinNarrower topic: Ray paths through droplets help explain how sunlight is concentrated toward its source.

• Methods in electromagnetismCompared with: It trades full-wave field accuracy for simpler ray tracing in high-frequency regimes.

• StadimeterNarrower topic: A stadimeter relies on sight lines and angular measurement rather than wave effects.