✓ 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
Physically rigorous with iterative water-surface solver and correct buoyancy values (F=ρgV), but crown movement is a direct translate with no easing/fall animation — the crowns teleport rather than fall smoothly.
Physically rigorous with iterative water-surface solver and correct buoyancy values (F=ρgV), but crown movement is a direct translate with no easing/fall animation — the crowns teleport rather than fall smoothly.