✓ 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
Strong physics implementation with iterative water-rise solve and correct Archimedes values, but no true fall animation (crowns teleport per slider position rather than animating independently), and the slider direction labeling is correct (top=air, bottom=submerged).
Strong physics implementation with iterative water-rise solve and correct Archimedes values, but no true fall animation (crowns teleport per slider position rather than animating independently), and the slider direction labeling is correct (top=air, bottom=submerged).