— 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 — shows three generic buoyancy scenarios with circles instead of the required two-crown (pure gold vs. gilded) Archimedes experiment, with no vertical slider, no crown fall animation, no water-level rise, no live density/volume/displaced-water readouts, and no Heureka moment.
Completely wrong demo — shows three generic buoyancy scenarios with circles instead of the required two-crown (pure gold vs. gilded) Archimedes experiment, with no vertical slider, no crown fall animation, no water-level rise, no live density/volume/displaced-water readouts, and no Heureka moment.