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EarthTech International (via Internet Archive), 2026-10-09 (Investigator, Step I, run 1)

Site: http://www.earthtech.org (live page now 404) via the Wayback Machine (CDX query and id_ snapshot fetched in Chrome and by curl). Lead came from Kowalski, Little and Luce (2005), which cites "replicationjln.htm".

Queries: live URL earthtech.org/experiments/IncW/2003/replicationjln.htm (404); Wayback CDX prefix earthtech.org/experiments/IncW/ (only a 2022 404) and www.earthtech.org/experiments/Inc / Inc-W (found http://www.earthtech.org:80/experiments/Inc-W/2003/replicationjln.htm captured 2003-08-10, status 200).

Saved: research/files/Earthtech-Little-Luce-2003-replication-of-Naudin-CFR.htm (archived HTML; figures not saved). Source URL [web]: https://web.archive.org/web/20030810115339/http://www.earthtech.org:80/experiments/Inc-W/2003/replicationjln.htm

Result: positive. This is an independent, instrumented replication aimed specifically at Naudin's CFR (claim 4).

What it says

  • Title: "Replication of Jean-Louis Naudin's Replication of the Mizuno Experiment", Scott Little and George Luce, EarthTech International (Austin, Texas), dated 15 July 2003.
  • Background: EarthTech tried to replicate Ohmori and Mizuno (ICCF-7, 1998) during 1998-2000 "Despite having the full cooperation of Dr. Mizuno, including his providing several W cathodes to us, all of our experiments failed to show excess power production." Naudin's results "indicate substantial excess power production with power output/input ratios typically around 1.6 but sometimes exceeding 2.5", which prompted this replication.
  • Apparatus: variac, 3 kVA 120-240 V isolation transformer, 25 A bridge, 3000 uF filter capacitor (ripple about 4.7 V p-p at 250 V, 2.5 A); input measured with a Clarke-Hess power meter; cell on a Sartorius LC6200S balance (10 mg resolution) read continuously; thermistor for solution temperature; a small stirrer (770 rpm, about 0.8 W).
  • Method: output = E_heating (mass x dT x 4.186) + E_boiling (evaporated mass x heat of vaporisation) with corrections for vessel heat capacity, losses and the energy that splits water into H2 and O2 (COP2).
  • Result: "Our final results, including corrections for the measured and estimated losses, are presented in the column labeled COP2 ... The values are very close to 1.00. In fact, the average COP2 of all the runs (excluding 9, 10, and 11 when the stirrer was off) is 0.98."
  • On Naudin's method (from a private communication with Naudin): "He adds to the total output energy the energy required to vaporize the water lost by evaporation during the cooldown period. We do not understand his justification for this addition. ... To include any portion of it again is double-counting, which erroneously inflates the COP value." Their table has a separate column computed Naudin's way.
  • Conclusion: "Our experiments show no sign of the large excess power levels observed by Naudin."

How it bears on claim 4: it is a direct test of Naudin's own set-up and of his accounting. It names one specific step in Naudin's calculation (counting evaporation after power-off) that the reviewers can check against Naudin's run pages. Naudin's reply, if any, is not yet found (lead: JLN CFR pages updated after July 2003, and the jlnlabs Yahoo group). Other EarthTech Mizuno pages exist in the archive (experiments/Inc-W/2ndtry/..., 2001 captures) and are not yet read.