✓ 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 and info-panel implementation with correct same-mass/different-density values and iterative water-rise calculation, but crown movement is a direct positional jump with no fall animation — crowns teleport rather than fall, and the splash trigger only fires on the transition edge rather than during sustained motion.
Strong physics and info-panel implementation with correct same-mass/different-density values and iterative water-rise calculation, but crown movement is a direct positional jump with no fall animation — crowns teleport rather than fall, and the splash trigger only fires on the transition edge rather than during sustained motion.