✓ 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
Fully featured SVG demo with correct Archimedes physics, but the custom drag-based slider lacks a native range input and has no keyboard accessibility, and the water-rise pixel scale (pixelsPerCm=8 hardcoded) is decoupled from actual container geometry, making the visual rise somewhat arbitrary.
11,798 output tokens · claude-opus-4-6 · end_turn
Fully featured SVG demo with correct Archimedes physics, but the custom drag-based slider lacks a native range input and has no keyboard accessibility, and the water-rise pixel scale (pixelsPerCm=8 hardcoded) is decoupled from actual container geometry, making the visual rise somewhat arbitrary.