✓ 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
Comprehensive, physics-correct implementation with all major features present, but lacks true fall animation (crowns teleport rather than animate between positions) and the splash trigger logic is fragile/fires only at initial entry rather than reliably on each submersion event.
Comprehensive, physics-correct implementation with all major features present, but lacks true fall animation (crowns teleport rather than animate between positions) and the splash trigger logic is fragile/fires only at initial entry rather than reliably on each submersion event.