Observed arrival · 2026-10-10
Valence: a molecule sandbox that shows its misses
A Windows molecule sandbox where atoms form and break bonds through a physics-based simulation rather than scripted molecule templates.
○Open
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Windows users testing physics-based molecule simulations
- Worth noticing
- The water example lists a 105.0° computed angle against a 104.5° measurement, while labeling the difference.
Field notes
The page separates a browser-running bulk-matter simulation from the Windows molecule sandbox, which it labels as in development. Its water panel reports both an angle and an O–H bond length alongside measured comparisons, while the project also reports 1,414 automated tests and a 2.5% average bond-length error. These figures are project-reported, not independently verified in the supplied material.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue