Value chain · CLM-0093
In plain terms
The thousand-fold disagreement between the two published versions was a lost micro prefix in the abstract I was working from. The papers agree.
The claim as recorded
The apparent factor of 1,034 between the Perkins and Goldman coefficient and the Duncan coefficient is a unit-prefix transcription artefact and not a disagreement: Duncan's 1980 precursor states the relation at a 2.4 GHz normalisation with a coefficient of 6 W/m2, which renormalises to 0.434 W/m2 at 1 GHz and matches the 2004 review's 0.43, and working backwards that implies about 1.465 microwatts per square metre at 15 MHz against the retrieved abstract's reading of 1.5 milliwatts, so the two relations agree to about 2 per cent.
Scope and limits
Inferred from agreement when written; the published abstract, read on the publisher's page 2026-09-20, prints the F-region coefficient as 1.5 microwatts per square metre, so the lost prefix is now read from the abstract itself and not only inferred. The full text of Perkins and Goldman remains closed access.
What it assumes
that the OSTI abstract's "1.5 mW/m2" is a transcription of 1.5 microwatts per square metre, which the arithmetic strongly implies but the full text would confirm
Where it comes from
This is the project's own working, shown in full:
6 / 2.4^3 = 0.434. And 0.434 x (15/1000)^3 = 1.465e-6 W/m2 = 1.465 microwatts per square metre. Arithmetic in CALC-012.
Related records
- Answers question
- QST-010 not published in this release
- Supersedes
- CLM-0091 not published in this release
Cite this
energyaperture.com/c/clm-0093
CLM-0093, Energy Aperture, as of 2026-09.
Connected records
Other published records linked to this one. A list, not a judgement.
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- Also from SRC-117
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