✓ 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 SVG-based implementation with correct Archimedes physics (gold 19.3 g/cm³, gilded 13.0 g/cm³, same 1000 g mass), working vertical custom slider, particle splash effects, rising water levels, live data panels, and a glow-animated Heureka — minor weakness is that mass/density display values are static rather than truly live-computed, and the water rise scale is artificially exaggerated rather than geometrically derived from tank dimensions.
10,137 output tokens · claude-opus-4-6 · end_turn
Comprehensive SVG-based implementation with correct Archimedes physics (gold 19.3 g/cm³, gilded 13.0 g/cm³, same 1000 g mass), working vertical custom slider, particle splash effects, rising water levels, live data panels, and a glow-animated Heureka — minor weakness is that mass/density display values are static rather than truly live-computed, and the water rise scale is artificially exaggerated rather than geometrically derived from tank dimensions.