✓ 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
Slider direction is inverted (top label = "Luft"/air but slider min=0 maps to air, while HTML range inputs render min at bottom on vertical sliders, so top = water), both crowns move identically with no visual differentiation of displaced water volumes, and the water level formula is ad-hoc/non-physical rather than based on actual Archimedes displacement math.
Slider direction is inverted (top label = "Luft"/air but slider min=0 maps to air, while HTML range inputs render min at bottom on vertical sliders, so top = water), both crowns move identically with no visual differentiation of displaced water volumes, and the water level formula is ad-hoc/non-physical rather than based on actual Archimedes displacement math.