✓ 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
All core features are implemented and physics values are plausible (gold 19.3, alloy 13.0 g/cm³, same mass), but the slider is SVG-draggable only with no HTML range input, the water rise is scaled in arbitrary pixels rather than true volumetric units, and the displaced-water live values update correctly while mass/volume/density are static (not truly "live").
9,669 output tokens · claude-opus-4-6 · end_turn
All core features are implemented and physics values are plausible (gold 19.3, alloy 13.0 g/cm³, same mass), but the slider is SVG-draggable only with no HTML range input, the water rise is scaled in arbitrary pixels rather than true volumetric units, and the displaced-water live values update correctly while mass/volume/density are static (not truly "live").