✓ 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
Solid, feature-complete implementation with correct Archimedes physics (iterative water-rise calculation), particle splash, and Heureka fade-in, but crown movement is purely position-mapped (no free-fall animation) and mass/volume/density values are static text rather than dynamically computed live fields.
Solid, feature-complete implementation with correct Archimedes physics (iterative water-rise calculation), particle splash, and Heureka fade-in, but crown movement is purely position-mapped (no free-fall animation) and mass/volume/density values are static text rather than dynamically computed live fields.