The International System of Units (SI), 9th edition¶
Bureau International des Poids et Mesures. (2019). The International System of Units (SI), 9th edition.
Cited by¶
4 citations across 4 artifacts.
Each citation links to the sentence it supports in the citing article.
Primes¶
- Ground Truth
- Fact-checking and journalism: source documents, official records, and primary witnesses are the ground truth against which claims are checked, structurally identical to ML evaluation. Forensics and audit: chain-of-custody-secured evidence or the unredacted original is the ground truth against which testimony and copies are checked. Navigation and metrology: surveyed monuments and physical standards — kilogram artifacts, atomic-clock references — are the ground truth at which calibration chains terminate.
This sourceDefines the SI base units via fixed fundamental constants (e.g., the kilogram via the Planck constant) — the primary standards at which metrological calibration chains terminate.
- Fact-checking and journalism: source documents, official records, and primary witnesses are the ground truth against which claims are checked, structurally identical to ML evaluation. Forensics and audit: chain-of-custody-secured evidence or the unredacted original is the ground truth against which testimony and copies are checked. Navigation and metrology: surveyed monuments and physical standards — kilogram artifacts, atomic-clock references — are the ground truth at which calibration chains terminate.
- Reference Standard Decay
- In metrology, primary standards drift as physical realizations are redefined — the 2019 SI redefinition is the canonical case.
This sourceDocuments the 2019 redefinition fixing the Planck constant and retiring the International Prototype of the Kilogram, re-grounding the kilogram on an invariant of nature.
- In metrology, primary standards drift as physical realizations are redefined — the 2019 SI redefinition is the canonical case.
- Standardization
- In measurement, the establishment of the metric system and the SI units is standardization in its purest civic form: nations and trades converged on common units of length, mass, and time so that a measurement made by one party means the same to another — a convergence achieved partly de jure (treaty, the General Conference on Weights and Measures) and partly by the network effect of mutual intelligibility.
This sourceDocuments the treaty-based (Metre Convention, CGPM) convergence of nations on common units of measurement.
- In measurement, the establishment of the metric system and the SI units is standardization in its purest civic form: nations and trades converged on common units of length, mass, and time so that a measurement made by one party means the same to another — a convergence achieved partly de jure (treaty, the General Conference on Weights and Measures) and partly by the network effect of mutual intelligibility.
Domain-specific¶
Verification¶
Does it exist? Not checked yet. This entry carries no identifier to resolve. It was extracted from the citation as written in the article, normalized, and deduplicated against the rest of the registry.
Does it back the claim? Not recorded. Neither this nor any other of the 4 citations of this work carries a recorded support check.
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