Value chain · CLM-0126
In plain terms
The 1982 source behind the disputed 10 per cent absorption figure actually says absorption is 0.002 per cent, and never mentions solar activity at all.
The claim as recorded
The 1982 Japanese report that a 2008 review cites for its absorption figures states that microwave beam absorption is about 2e-5 of incident power, equivalent to about 0.1 megawatts absorbed from a 5 gigawatt transmission, describes that amount as not a problem for microwave power transmission, attributes the absorption mainly to the D and E regions, and contains NO statement of any several per cent to ten per cent range and no discussion of solar activity anywhere in its eight pages.
Scope and limits
A negative result across one document. It establishes that this source does not contain the statement attributed to it, not that no Japanese source does.
What it assumes
No assumptions are recorded against this claim.
Where it comes from
, verbatim from the Japanese: the absorbed power of the microwave beam is on the order of 2e-5 of the incident power, that is, of a transmitted power of 5 GW about 0.1 MW is absorbed; this amount of absorption is not a problem for microwave power transmission. Arithmetic check: 5e9 x 2e-5 = 1e5 W = 0.1 MW, internally consistent. Searched all eight pages for a ten per cent figure, a "several per cent" figure, and for the Japanese terms for solar activity and sunspots: zero hits for all four.
Related records
- Answers question
- QST-009 not published in this release
Cite this
energyaperture.com/c/clm-0126
CLM-0126, Energy Aperture, as of 1982.
Connected records
Other published records linked to this one. A list, not a judgement.
- Also from SRC-141
- CLM-0149A 1982 Japanese government radio-research review says the famous 230 watts-per-square-metre figure was only ever a theoretical calculation...CLM-0150A 1982 Japanese review notes that, at the time, the American and Soviet safety limits for microwave exposure were far apart (1000 times, by...CLM-0947A 1982 Japanese review calculates that the ionosphere absorbs about one part in fifty thousand of a 2.45 GHz power beam - around 0.1 MW...