— 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
Generic Archimedes buoyancy demo with density sliders — entirely misses the prompt's core requirements: no crowns, no crown fall animation, no vertical slider, no water displacement/rising level, no mass/volume/displaced-water readouts, and no Heureka moment.
Generic Archimedes buoyancy demo with density sliders — entirely misses the prompt's core requirements: no crowns, no crown fall animation, no vertical slider, no water displacement/rising level, no mass/volume/displaced-water readouts, and no Heureka moment.