✓ 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
Live mass, volume, and density values are static (hardcoded in SVG text, not updated by JS), so only displaced water is truly "live"; physics values (gold 19.3 g/cm³, gilded 13.0 g/cm³, same 1000 g mass) are plausible and correctly show the gilded crown displacing more water.
9,568 output tokens · claude-opus-4-6 · end_turn
Live mass, volume, and density values are static (hardcoded in SVG text, not updated by JS), so only displaced water is truly "live"; physics values (gold 19.3 g/cm³, gilded 13.0 g/cm³, same 1000 g mass) are plausible and correctly show the gilded crown displacing more water.