✓ 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
ASCII/pre-based rendering creates a broken layout where crowns render incorrectly (separate loops overwriting lines), the slider is horizontal not vertical, and the buoyancy/displacement math is ad-hoc and doesn't correctly demonstrate gilded crown displacing more water than pure gold.
ASCII/pre-based rendering creates a broken layout where crowns render incorrectly (separate loops overwriting lines), the slider is horizontal not vertical, and the buoyancy/displacement math is ad-hoc and doesn't correctly demonstrate gilded crown displacing more water than pure gold.