✓ 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
Solid physics implementation with correct densities (19.3 vs 13.0 g/cm³), same mass (1000g), proper buoyancy force calculation, and proportionally correct water rise, but crowns teleport rather than animate a fall, and density values in the data panel are static (not dynamically updated live values).
10,639 output tokens · claude-opus-4-6 · end_turn
Solid physics implementation with correct densities (19.3 vs 13.0 g/cm³), same mass (1000g), proper buoyancy force calculation, and proportionally correct water rise, but crowns teleport rather than animate a fall, and density values in the data panel are static (not dynamically updated live values).