✓ 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 (value=0 at top means crowns in air, value=100 at bottom means water — this matches correct direction, BUT the CSS writing-mode:vertical-lr + direction:rtl combination on webkit may render it visually inverted depending on browser; the hint text "Slider nach unten ziehen" suggests it may behave unexpectedly); physics values (gold 19300, fake 8000 kg/m³, same 1kg mass) are correct and the iterative submerged-fraction calculation is a genuine Archimedes implementation, but the wave animation loop uses a crude approximation of subFrac rather than the authoritative computed value.
Slider direction is inverted (value=0 at top means crowns in air, value=100 at bottom means water — this matches correct direction, BUT the CSS writing-mode:vertical-lr + direction:rtl combination on webkit may render it visually inverted depending on browser; the hint text "Slider nach unten ziehen" suggests it may behave unexpectedly); physics values (gold 19300, fake 8000 kg/m³, same 1kg mass) are correct and the iterative submerged-fraction calculation is a genuine Archimedes implementation, but the wave animation loop uses a crude approximation of subFrac rather than the authoritative computed value.