✓ 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, physically accurate implementation with splash/ripple effects, buoyancy arrows, and a festive Heureka overlay, but crowns jump instantly to positions rather than animating a fall — no smooth drop/fall animation between air and water.
Comprehensive, physically accurate implementation with splash/ripple effects, buoyancy arrows, and a festive Heureka overlay, but crowns jump instantly to positions rather than animating a fall — no smooth drop/fall animation between air and water.