✓ 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 accurate (gold 19.3 g/cm³, alloy 13.0 g/cm³, same 1000 g mass, correct displacement ratio), but the crown movement is instant on slider input with no smooth fall animation — the crown teleports rather than animates into the water.
Physics values are accurate (gold 19.3 g/cm³, alloy 13.0 g/cm³, same 1000 g mass, correct displacement ratio), but the crown movement is instant on slider input with no smooth fall animation — the crown teleports rather than animates into the water.