✓ 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
Displaced-water live value works and physics values are plausible, but mass/volume/density displays are static (not live), the slider is a draggable SVG circle rather than a native vertical range input, and water-rise scaling is dimensionally inconsistent (dividing cm³ by px width).
Displaced-water live value works and physics values are plausible, but mass/volume/density displays are static (not live), the slider is a draggable SVG circle rather than a native vertical range input, and water-rise scaling is dimensionally inconsistent (dividing cm³ by px width).