HTML Sonnet #43
8.3
Evaluation
8.3 avg
8 physics accuracy
8.5 design quality
7.5 animation quality
8 slider ux
9.5 completeness
8.5 overall
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

Nearly complete implementation with correct physics (gold 19.3 g/cm³, gilded 6.8 g/cm³, same 1000 g mass), clean dual-canvas layout, working splash particles, and a polished Heureka overlay — minor flaw is the buoyancy unit calculation uses a redundant ×0.01 then ×1000 factor that inflates displayed mN values inconsistently.

10,125 output tokens · claude-sonnet-4-6 · end_turn

Nearly complete implementation with correct physics (gold 19.3 g/cm³, gilded 6.8 g/cm³, same 1000 g mass), clean dual-canvas layout, working splash particles, and a polished Heureka overlay — minor flaw is the buoyancy unit calculation uses a redundant ×0.01 then ×1000 factor that inflates displayed mN values inconsistently.