✓ 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 (min=0 maps to air but the label says "Oben=Luft" yet slider-vertical with bt-lr writing-mode makes top=high value=water), crown ASCII art barely moves/falls, and water level visually does not rise despite partial displacement math being correct.
Slider direction is inverted (min=0 maps to air but the label says "Oben=Luft" yet slider-vertical with bt-lr writing-mode makes top=high value=water), crown ASCII art barely moves/falls, and water level visually does not rise despite partial displacement math being correct.