— 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 generic Archimedes buoyancy explainer with ASCII art and scenario-toggle buttons, with zero implementation of the two-crown (pure gold vs. gilded) setup, no vertical slider, no falling animation, no water displacement visuals, and no live physics readouts.
Completely wrong demo — implements a generic Archimedes buoyancy explainer with ASCII art and scenario-toggle buttons, with zero implementation of the two-crown (pure gold vs. gilded) setup, no vertical slider, no falling animation, no water displacement visuals, and no live physics readouts.