✓ 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 says ⬆ Luft | Wasser ⬇ but a horizontally-implemented input rotated -90° maps its min=0 (left/top visually) to the air position — however moving the thumb toward the bottom increases the value and submerges the crowns, which is correct in practice but the CSS rotation makes the top thumb position correspond to value 0/air, which is actually correct — yet on screen the physical top of the slider corresponds to min=0/air so direction is arguably correct, but the rotated range input's left-end (visually top after rotation) equals min=0 meaning crowns-in-air, which is correct); physics values (gold 19.32 g/cm³, silver 10.49 g/cm³, mixed density ~13.07 g/cm³) are accurate and the gilded crown visually and numerically displaces more water, but the two-pass water-rise pixel scaling (3.5px/cm with 200cm² tank) is arbitrary and not true-to-scale.
9,268 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (label says ⬆ Luft | Wasser ⬇ but a horizontally-implemented input rotated -90° maps its min=0 (left/top visually) to the air position — however moving the thumb toward the bottom increases the value and submerges the crowns, which is correct in practice but the CSS rotation makes the top thumb position correspond to value 0/air, which is actually correct — yet on screen the physical top of the slider corresponds to min=0/air so direction is arguably correct, but the rotated range input's left-end (visually top after rotation) equals min=0 meaning crowns-in-air, which is correct); physics values (gold 19.32 g/cm³, silver 10.49 g/cm³, mixed density ~13.07 g/cm³) are accurate and the gilded crown visually and numerically displaces more water, but the two-pass water-rise pixel scaling (3.5px/cm with 200cm² tank) is arbitrary and not true-to-scale.