✓ 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, visually polished SVG demo implementing all required features; submersion fraction is computed against the static initial water surface rather than the dynamically rising level, slightly underestimating displacement, but all physics values and visual behavior are otherwise correct and consistent.
12,885 output tokens · claude-opus-4-6 · end_turn
Comprehensive, visually polished SVG demo implementing all required features; submersion fraction is computed against the static initial water surface rather than the dynamically rising level, slightly underestimating displacement, but all physics values and visual behavior are otherwise correct and consistent.