✓ 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
Both crowns descend together at identical Y positions making them visually indistinguishable in displacement, the water-level calculation conflates progress with immersion in a non-physical way, mass is never displayed live, and the "gilded displaces more" verdict is invisible because both crowns share the same on-screen depth.
Both crowns descend together at identical Y positions making them visually indistinguishable in displacement, the water-level calculation conflates progress with immersion in a non-physical way, mass is never displayed live, and the "gilded displaces more" verdict is invisible because both crowns share the same on-screen depth.