— 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
Competent general Archimedes demo with correct floating/sinking physics, but implements none of the crown-specific requirements: no two crowns, no vertical slider controlling crown immersion depth, no fall/splash animation, no Heureka moment, and uses a dark background — fundamentally the wrong visualization was built.
Competent general Archimedes demo with correct floating/sinking physics, but implements none of the crown-specific requirements: no two crowns, no vertical slider controlling crown immersion depth, no fall/splash animation, no Heureka moment, and uses a dark background — fundamentally the wrong visualization was built.