✓ 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
Slider direction is inverted (label reads "LUFT ↑ … WASSER ↓" but the rotated range input maps slider-top to max=100/water, not to min=0/air, so moving the thumb upward increases submersion rather than decreasing it); everything else — physics, visuals, Heureka overlay, live data panels — is well-executed.
11,198 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (label reads "LUFT ↑ … WASSER ↓" but the rotated range input maps slider-top to max=100/water, not to min=0/air, so moving the thumb upward increases submersion rather than decreasing it); everything else — physics, visuals, Heureka overlay, live data panels — is well-executed.