✓ 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
Feature-complete ASCII implementation with correct physics (Au 19.3 g/cm³, gilded 13.0 g/cm³, same 1000g mass), but water-rise is reported in "rows" rather than physical cm³ units, and the ASCII rendering makes the visual water-level difference subtle and hard to discern at a glance.
7,779 output tokens · claude-opus-4-6 · end_turn
Feature-complete ASCII implementation with correct physics (Au 19.3 g/cm³, gilded 13.0 g/cm³, same 1000g mass), but water-rise is reported in "rows" rather than physical cm³ units, and the ASCII rendering makes the visual water-level difference subtle and hard to discern at a glance.