✓ 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 (min=0 at top maps to air, but the rotated CSS slider visually puts 0 at the bottom, making the physical direction ambiguous/incorrect for the user); all physics values are correct and the feature set is otherwise impressively complete with ASCII rendering, splash effects, water rise, and a Heureka overlay.
7,556 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (min=0 at top maps to air, but the rotated CSS slider visually puts 0 at the bottom, making the physical direction ambiguous/incorrect for the user); all physics values are correct and the feature set is otherwise impressively complete with ASCII rendering, splash effects, water rise, and a Heureka overlay.