🌍 Earth Cross-Section: P and S Ray Paths, Core Shadow and Travel Times

2D cross-section of the Earth: seismic rays bending through a layered velocity model, the P and S shadow zones, PKP through the liquid core and the travel-time curves. Same ray engine and four checks as the 3D page.

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install