— 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 physics and good UI polish, but fundamentally off-brief: no crowns, no vertical immersion slider, no fall/splash animation, no Heureka moment, and no two-crown comparison — essentially none of the Archimedes-crown-specific requirements are met.
Competent general Archimedes demo with correct physics and good UI polish, but fundamentally off-brief: no crowns, no vertical immersion slider, no fall/splash animation, no Heureka moment, and no two-crown comparison — essentially none of the Archimedes-crown-specific requirements are met.