✓ 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
Solid ASCII-art physics demo with correct Archimedes values and live data panels, but slider direction is inverted (value=0 is labeled "Oben/Luft" yet the slider thumb starts at top meaning top=air is correct in label but the `writing-mode: vertical-lr; direction: rtl` rendering makes the physical drag direction ambiguous/inverted), there is no true fall animation (crowns teleport with slider), and splash logic fires based on a frame counter rather than actual entry events.
Solid ASCII-art physics demo with correct Archimedes values and live data panels, but slider direction is inverted (value=0 is labeled "Oben/Luft" yet the slider thumb starts at top meaning top=air is correct in label but the `writing-mode: vertical-lr; direction: rtl` rendering makes the physical drag direction ambiguous/inverted), there is no true fall animation (crowns teleport with slider), and splash logic fires based on a frame counter rather than actual entry events.