— 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
Generic Archimedes buoyancy simulator with no crowns, no vertical slider, no fall/splash/Heureka animations, dark background violating light-bg requirement, and none of the Archimedes crown narrative implemented.
Generic Archimedes buoyancy simulator with no crowns, no vertical slider, no fall/splash/Heureka animations, dark background violating light-bg requirement, and none of the Archimedes crown narrative implemented.