— 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
Well-crafted general Archimedes demo with correct physics and polished dark-theme UI, but it is entirely the wrong artifact — no crowns, no crown-specific two-body comparison, no vertical immersion slider, no fall/splash animations, and no Heureka moment as specified by the prompt.
Well-crafted general Archimedes demo with correct physics and polished dark-theme UI, but it is entirely the wrong artifact — no crowns, no crown-specific two-body comparison, no vertical immersion slider, no fall/splash animations, and no Heureka moment as specified by the prompt.