✓ 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
Exceptionally polished SVG demo with correct physics (same mass 1000g, gold ρ=19.32 vs gilded ρ=11.35), live data panels, bar chart comparison, splash particles, ripple effects, and a full Heureka overlay — the only notable absence is a true fall animation (crowns teleport rather than drop) and the slider thumb lacks keyboard accessibility.
12,253 output tokens · claude-opus-4-6 · end_turn
Exceptionally polished SVG demo with correct physics (same mass 1000g, gold ρ=19.32 vs gilded ρ=11.35), live data panels, bar chart comparison, splash particles, ripple effects, and a full Heureka overlay — the only notable absence is a true fall animation (crowns teleport rather than drop) and the slider thumb lacks keyboard accessibility.