SWhat changed
Matter acquired an experimentally grounded subatomic charged constituent common across cathode-ray sources.
Scientific scope
The 1897 paper; not all earlier cathode-ray research, the later electron-charge measurement, nuclear atom or modern particle physics.
Evidence
The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. The entry is limited to the 1897 paper and does not erase earlier cathode-ray research or later measurements of electron charge.
Contributors
- J. J. Thomson · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.
Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.
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