Claim ds-012 · Atlas v1.2.0

Torsion-balance experiments report no deviation from the gravitational inverse-square law down to separations of about 52 micrometres.

ds-012Established result · experimental measurement

Torsion-balance experiments report no deviation from the gravitational inverse-square law down to separations of about 52 micrometres.

Why it is stated this way
This is a direct laboratory measurement, published in Physical Review Letters, and one of the few genuinely settled empirical inputs on this map. It constrains any scenario predicting a mesoscopic extra dimension.
Scope and limitations
A null result bounds the parameter space; it does not exclude the Dark Dimension scenario, whose predicted scale sits near the current experimental frontier. Systematics modeling, not the raw sensitivity, is the practical limit.
Sources

Last reviewed 2026-07-27 · Atlas v1.2.0

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Source cards — 2

This claim is one entry in an educational, non-peer-reviewed orientation tool. It is not a consensus statement, and its epistemic status label is part of the claim — quoting the wording without the status and the limitations misrepresents it.

Machine-readable form: claims.json · sources.json. Derived from the working paper (DOI 10.5281/zenodo.21603961). Licensed CC BY 4.0.