— 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
A generic Archimedes explainer with ASCII art and a play button; it implements none of the required features — no crowns, no slider, no live values, no displacement visualization, no Heureka animation.
A generic Archimedes explainer with ASCII art and a play button; it implements none of the required features — no crowns, no slider, no live values, no displacement visualization, no Heureka animation.