✓ 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
Slider direction is inverted (min=0 labeled "Luft" at top, max=1000 labeled "Wasser" at bottom, but because the slider is rotated -90deg the visual top actually maps to value=0/air and bottom to value=1000/water — marginal, but the crown-above-Y at value=0 and submerged at value=1000 is functionally correct directionally); however mass/volume/density values are static (not "live"), no fall animation exists (crown teleports linearly with slider), and the Heureka triggers only at slider end rather than on a distinct falling event.
9,807 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted (min=0 labeled "Luft" at top, max=1000 labeled "Wasser" at bottom, but because the slider is rotated -90deg the visual top actually maps to value=0/air and bottom to value=1000/water — marginal, but the crown-above-Y at value=0 and submerged at value=1000 is functionally correct directionally); however mass/volume/density values are static (not "live"), no fall animation exists (crown teleports linearly with slider), and the Heureka triggers only at slider end rather than on a distinct falling event.