✓ 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, visually polished implementation with correct physics (19.3 vs 13.0 g/cm³, same 1000 g mass) and live data readouts, but crowns snap instantly to positions driven by slider input rather than animating a fall, and the splash trigger window is narrow enough that fast drags can miss it entirely.
Solid, visually polished implementation with correct physics (19.3 vs 13.0 g/cm³, same 1000 g mass) and live data readouts, but crowns snap instantly to positions driven by slider input rather than animating a fall, and the splash trigger window is narrow enough that fast drags can miss it entirely.