— 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
Completely wrong demo: implements a general buoyancy sandbox with a single configurable block (not two crowns), has no vertical immersion slider, no crown fall animation, no splash effects, no rising water level, no Heureka moment, and ignores the Archimedes-crown narrative entirely.
Completely wrong demo: implements a general buoyancy sandbox with a single configurable block (not two crowns), has no vertical immersion slider, no crown fall animation, no splash effects, no rising water level, no Heureka moment, and ignores the Archimedes-crown narrative entirely.