— 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
Demonstrates basic Archimedes principle with water displacement animation, but completely omits the two-crown (pure gold vs. gilded) comparison, vertical slider, density/mass/volume live values, splash effects, and Heureka animation — the core requirements of the prompt.
Demonstrates basic Archimedes principle with water displacement animation, but completely omits the two-crown (pure gold vs. gilded) comparison, vertical slider, density/mass/volume live values, splash effects, and Heureka animation — the core requirements of the prompt.