— 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 general Archimedes physics demo with correct formulas and live values, but completely misses the prompt's core requirement: no crowns, no two-object comparison, no vertical fall-into-water slider, no Heureka animation, dark background instead of light, and horizontal sliders controlling abstract density/volume rather than crown immersion depth.
Solid general Archimedes physics demo with correct formulas and live values, but completely misses the prompt's core requirement: no crowns, no two-object comparison, no vertical fall-into-water slider, no Heureka animation, dark background instead of light, and horizontal sliders controlling abstract density/volume rather than crown immersion depth.