— 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 buoyancy math and live readouts, but fundamentally misses the brief: no crowns, no two-object comparison, no vertical slider for dipping, no fall/splash animation, no Heureka moment, and uses a dark background — essentially a different (though competent) tool.
Solid general Archimedes physics demo with correct buoyancy math and live readouts, but fundamentally misses the brief: no crowns, no two-object comparison, no vertical slider for dipping, no fall/splash animation, no Heureka moment, and uses a dark background — essentially a different (though competent) tool.