✓ 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
Solid ASCII-canvas implementation with correct physics (same mass, different volumes/densities, Archimedes buoyancy), but the custom draggable thumb slider is clunky compared to a native range input, the text-art visualization is low-fidelity, and the Heureka fires only at slider position==1.0 (a near-impossible exact float match).
Solid ASCII-canvas implementation with correct physics (same mass, different volumes/densities, Archimedes buoyancy), but the custom draggable thumb slider is clunky compared to a native range input, the text-art visualization is low-fidelity, and the Heureka fires only at slider position==1.0 (a near-impossible exact float match).