Claim register
Claim Evaluation
Every claim is stated exactly, traced to its origin, and evaluated against the best supporting and the best opposing case. Scientific claims must expose their full reasoning chain — observation, measurement, calculation, prediction, physical test, result, replication — and declare per-model predictions BEFORE the result is shown. Appeals to authority (“science says”, “experts agree”, “the math proves it”, “settled”) are not evidence. Confidence is authored, not tallied. Preserve disagreement rather than force a conclusion.
- Incomplete — primary sources not yet ingestedThe universal comparison scaffold below is a placeholder. Do not treat empty sections as evidence.
Sagnac effect and rotating interferometers
UnresolvedA ring interferometer measures a phase shift proportional to the rotation rate of its frame relative to inertial space.
Origin: Topic acknowledged; primary sources not yet ingested into this record.
Best supporting case
Awaiting primary-source ingest before an authored comparison.
Best opposing case
Awaiting primary-source ingest before an authored comparison.
Evidence
Universal comparison · who claims what, and how each model explains it
ExperimentalWho makes the claim: Georges Sagnac (1913) and every subsequent ring-laser and fibre-optic gyro deployment.Scope: See exact wording for scope and definitions; further scoping to follow with primary sources.
Flat / enclosed model
What it says: The signal is real; interpreted as evidence of an aether or absolute rest frame that would falsify special relativity's naive reading.
Required assumptions: light-in-vacuum, instrument-calibration
Strongest objection: Awaiting primary-source ingest.
Falsifier: A rigorous derivation showing Sagnac's result inevitably follows from special-relativity kinematics in a rotating frame.
Globe model
What it says: Standard treatment derives Sagnac from Maxwell's equations in a rotating frame; ring-laser gyros routinely measure Earth's ≈ 15°/h rotation.
Required assumptions: light-in-vacuum, instrument-calibration
Strongest objection: Awaiting primary-source ingest.
Falsifier: A calibrated ring-laser gyro repeatedly failing to register a rotation-rate signal on a stationary lab bench.
Circular-reasoning check
No circular-reasoning risks identified in the authored evidence chain.
Knowledge library · claim → equation → law → assumptions
Laws / principles
Theories / models
Assumptions
Hidden assumptions
— none recorded —
Missing evidence
- Primary sources for the flat-model explanation.
- Primary sources for the globe-model explanation.
- At least one reproducible physical test with independent replication.
Contradictions
— none recorded —
Reproducibility
- Not yet documented in this record.
Confidence · not_rated
This record is a structural placeholder. Confidence will only be rated once primary sources and reasoning chain are authored.
Confidence is authored, not tallied. It reflects primary vs. secondary evidence, source independence, methodology, conflicts, and reproducibility — not the count of sources.