— 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
This is a well-built general Archimedes demo with solid physics and a rich ASCII UI, but it fundamentally misses the prompt's core requirements: no two crowns, no gold vs. gilded comparison, no vertical slider controlling crown submersion, no fall/splash animation, no heureka moment, and uses a dark background — it's the wrong demo entirely.
This is a well-built general Archimedes demo with solid physics and a rich ASCII UI, but it fundamentally misses the prompt's core requirements: no two crowns, no gold vs. gilded comparison, no vertical slider controlling crown submersion, no fall/splash animation, no heureka moment, and uses a dark background — it's the wrong demo entirely.