— 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
A well-built generic Archimedes buoyancy simulator with smooth animation and correct physics, but it completely misses the prompt's core requirement: two crowns (pure gold vs. gilded), same mass/different density, a vertical slider controlling crown immersion, fall animation, splash effects, and a Heureka moment.
11,230 output tokens · claude-opus-4-6 · end_turn
A well-built generic Archimedes buoyancy simulator with smooth animation and correct physics, but it completely misses the prompt's core requirement: two crowns (pure gold vs. gilded), same mass/different density, a vertical slider controlling crown immersion, fall animation, splash effects, and a Heureka moment.