✓ 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
Physics values are plausible (1000g same mass, 19.3 vs 13.0 g/cm³, correct displaced volume ratio), but crown "fall" is a static slider-driven translation with no autonomous animation, and splash particles persist constantly during submersion rather than triggering once on entry.
Physics values are plausible (1000g same mass, 19.3 vs 13.0 g/cm³, correct displaced volume ratio), but crown "fall" is a static slider-driven translation with no autonomous animation, and splash particles persist constantly during submersion rather than triggering once on entry.