— 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
Wrong prompt entirely — implements a generic single-object buoyancy demo with horizontal density/water-level sliders, no crowns, no two-object comparison, no vertical slider, no water displacement visualization, and no Archimedes story elements whatsoever.
Wrong prompt entirely — implements a generic single-object buoyancy demo with horizontal density/water-level sliders, no crowns, no two-object comparison, no vertical slider, no water displacement visualization, and no Archimedes story elements whatsoever.