✓ 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
Physics values are directionally correct (same mass, different density, gilded displaces more) but the water-rise calculation mixes pixel and physical units arbitrarily, making the displaced-water readout and buoyancy figures unreliable; the custom drag-slider works but lacks touch support and the crown visual is rudimentary.
Physics values are directionally correct (same mass, different density, gilded displaces more) but the water-rise calculation mixes pixel and physical units arbitrarily, making the displaced-water readout and buoyancy figures unreliable; the custom drag-slider works but lacks touch support and the crown visual is rudimentary.