— 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
Implements only generic Archimedes buoyancy on a single sphere — no crowns, no slider, no live data values, no Heureka animation; almost entirely off-prompt.
Implements only generic Archimedes buoyancy on a single sphere — no crowns, no slider, no live data values, no Heureka animation; almost entirely off-prompt.