— 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
Generic Archimedes buoyancy demo with a single unnamed cube and button controls — no crowns, no vertical slider, no mass/volume/density readouts, and no Heureka animation; almost none of the core prompt requirements are met.
Generic Archimedes buoyancy demo with a single unnamed cube and button controls — no crowns, no vertical slider, no mass/volume/density readouts, and no Heureka animation; almost none of the core prompt requirements are met.