✓ 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
Strong physics (correct densities 19.3/8.5 g/cm³, same 1000 g mass, proportional displacement, buoyancy in mN) and polished SVG design, but density is not displayed as a live value, crown movement is a direct translate rather than a true fall animation, and the slider controls position linearly rather than simulating a drop/fall sequence.
Strong physics (correct densities 19.3/8.5 g/cm³, same 1000 g mass, proportional displacement, buoyancy in mN) and polished SVG design, but density is not displayed as a live value, crown movement is a direct translate rather than a true fall animation, and the slider controls position linearly rather than simulating a drop/fall sequence.