✓ 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
Remarkably complete ASCII-art implementation with correct physics (Au 19.3, fake 7.9 g/cm³, same 1000 g mass), live panel values, rising water level, splash/ripple effects, and a multi-frame Heureka overlay — but water-rise scaling is arbitrary/cosmetic rather than geometrically derived, and the ASCII crown rendering is narrow/unclear visually.
Remarkably complete ASCII-art implementation with correct physics (Au 19.3, fake 7.9 g/cm³, same 1000 g mass), live panel values, rising water level, splash/ripple effects, and a multi-frame Heureka overlay — but water-rise scaling is arbitrary/cosmetic rather than geometrically derived, and the ASCII crown rendering is narrow/unclear visually.