✓ 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
Slider direction is inverted (value=0 at top means crowns in air, but slider-vertical renders 0 at bottom in most browsers), water-displacement height math uses an arbitrary containerArea constant (300×50) making the rise visually inconsistent between the two crowns, and the crown shapes are simplistic circles/ellipses rather than crown geometry.
Slider direction is inverted (value=0 at top means crowns in air, but slider-vertical renders 0 at bottom in most browsers), water-displacement height math uses an arbitrary containerArea constant (300×50) making the rise visually inconsistent between the two crowns, and the crown shapes are simplistic circles/ellipses rather than crown geometry.