— Two crowns — Same mass, different density — Vertical slider — Slider works — Slider controls crowns — Slider direction correct — Full slider range — Fall animation — Water displacement — Rising water level — Splash effects — Physics correct — Live mass value — Live volume value — Live density value — Live displaced water — Gilded displaces more — Heureka animation ✓ No external deps ✓ Light bg / dark text ✓ Self-contained HTML
Implements a generic Archimedes buoyancy demo with a single bouncing block — no crowns, no slider, no live value readouts, no water-level rise, no splash effects, and none of the Hiero crown narrative required by the prompt.
Implements a generic Archimedes buoyancy demo with a single bouncing block — no crowns, no slider, no live value readouts, no water-level rise, no splash effects, and none of the Hiero crown narrative required by the prompt.