— 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 concept: this is a generic Archimedes buoyancy calculator with a single generic body and horizontal sliders — no crowns, no crown-comparison, no fall animation, no splash, no rising water level, and no vertical slider; it misses virtually every crown-specific requirement from the prompt.
Completely wrong concept: this is a generic Archimedes buoyancy calculator with a single generic body and horizontal sliders — no crowns, no crown-comparison, no fall animation, no splash, no rising water level, and no vertical slider; it misses virtually every crown-specific requirement from the prompt.