How this demo works

These controls mirror the main product: timeline, observer, camera, and experiment parameters.

• Timeline — Drag the slider to scrub through time, or use Play to watch hits accumulate on the detection screen. Reset jumps back to the start.
• Measurement strength — Drag the slider from strong interference toward strong which-path information; the hit pattern updates continuously (SPEC-MEASUREMENT continuous decoherence model).
• Camera — Drag to orbit, scroll or pinch to zoom, right-drag (or trackpad two-finger) to pan—full 3D around the bench.
• Parameters & Recompute — Slit width, separation, and wavelength (colour). After edits, Recompute regenerates the particle set.
• Interpretations & ℹ — Tabs switch the story and overlays. The ℹ panel explains the active view without changing the underlying simulation.
• Theme — Use the sun/moon control in the header for light or dark UI.

Tour — Use ▶ Tour next to ℹ for a guided walkthrough of these controls.