— 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: shows generic buoyancy with a cube/sphere and density/submerge sliders instead of the two Archimedes crowns (pure gold vs. gilded) with a vertical fall-into-water slider — none of the required crown-specific features (two crowns, same mass, falling animation, splash, Heureka moment, mass/volume/displaced-water readouts) are implemented.
Completely wrong concept: shows generic buoyancy with a cube/sphere and density/submerge sliders instead of the two Archimedes crowns (pure gold vs. gilded) with a vertical fall-into-water slider — none of the required crown-specific features (two crowns, same mass, falling animation, splash, Heureka moment, mass/volume/displaced-water readouts) are implemented.