Investigator site log: Steinmentz-Charles (Charles Proteus Steinmetz)

Run 2026-10-08 (first run, STEP I)

Web time used: about 9.6 minutes wall clock (timer started 1791516143, last search at +567 s, tab closed just after). Normal 10-minute cap; not a deep dive. Chrome used for searches and for sites that refuse scripts; pages that could be fetched by script were saved under research/pages/ (evidence trail, not published). Stance: leads, not verdicts. Tags: [web] with URL, [memory] with confidence. Per-site notes are in research/2026-10-08-{site}.md.

Keywords tried (all queries, so later runs vary them)

• Google: Steinmetz "Instability of Electric Circuits" 1914 AIEE
• Google: Dollard Steinmetz "energy transfer" OR "dielectric induction" transients lectures
• Google: "Steinmetz" papers collection finding aid Union College OR miSci OR "Schenectady Museum"
• Google: Steinmetz "third class conductor" OR "third-class conductors" arc negative resistance cumulative oscillation
• Google: "Investigation of Some Trouble in the Generating System of the Commonwealth Edison" Steinmetz
• Google: Steinmetz lightning cloud "rain drops" "series capacity" OR "multigap" lightning theory 1907
• Google: Eric Dollard Steinmetz "Electric Discharges, Waves and Impulses" transients lecture BSRF
• Google: "cumulative oscillations" transformer Steinmetz 1913 OR 1914 arcing ground AIEE discussion
• Internet Archive: creator:(steinmetz) AND mediatype:texts; title:(electric circuits) AND creator:(steinmetz); "negative energy cycle" (0 hits)
• Google Patents: inventor Charles P Steinmetz, (oscillations OR arc OR lightning OR surge), before:priority:19240101; US1230615A
• Chronicling America: Steinmetz "artificial lightning", 1921-1923
• HathiTrust in-text: oscillation (Commonwealth Edison report)
• IEEE DOIs: 10.1109/T-AIEE.1923.5060887, 10.1109/PAIEE.1914.6661036, 10.1109/PAIEE.1916.6590573, 10.1109/PAIEE.1907.6742407, 10.1109/JAIEE.1924.6534780
• Not yet tried (for next run): "negative energy cycle"; "reversed hysteresis loop" arc; "singing arc" Steinmetz Duddell; Cunningham "artificial transmission line" 1911; Hayden Steinmetz "disruptive strength" 1910; Peek corona formula 10^-5; "Lightning and Lightning Protection" NELA 1907; "energy transfer constant" Steinmetz; Steinmetz "velocity of propagation of the electric field" radiation resistance; Steinmetz "multigap" arrester rain drops cloud; German: "Steinmetz" "Schwingungen" "Lichtbogen"; French translation "Théorie et calcul des phénomènes électriques de transition"; Slepian Peters 1923 "Surges on Transmission Lines"; Creighton "arcing ground suppressor"; Steinmetz "Nernst glower" oscillator.

Leads for review

1. The inventor's own work - Steinmetz, "Frequency Conversion by Third Class Conductor and Mechanism of the Arcing Ground and Other Cumulative Surges", Trans. AIEE 42 (1923) 470-477 [web: https://ieeexplore.ieee.org/document/5060887]. Abstract: arcs and gas discharges, "in which the voltage decreases with increase of current", act as "a combination of a negative resistance with a source of power", converting machine frequency to oscillation frequency. Bears on claims 1 and 2: his final account of the energy supply he called "practically unknown" in 1914. Full text needed (IEEE paywall, or a library copy of Trans. AIEE vol. 42). - Theory and Calculation of Electric Circuits (1917), Ch. X "Instability of Circuits: The Arc", secs. 81-101 [web: https://archive.org/details/theorycalculatio00stei]. Quantitative: "the arc, when shunted by an oscillating circuit, has an effective negative resistance ... and thereby generates alternating power, from the consumed direct-current power" (p.190); worked instance R = 18.5 / 20.3 / 27.5 ohm for 0 / 1 / 2 A swings at 3 A mean; lag of the transient characteristic (arc-stream and electrode temperature) limits amplitude and makes a "singing arc" possible (p.191-192); arcing ground, arcing-ground oscillation and transformer stationary oscillation (10,000-100,000 cycles) are "the same phenomena of the dropping arc characteristic" (p.200). Bears on claims 1, 2, 4. Recommend a deep read of printed pp.165-200 (Opus) for the equations of secs. 86-99. - "Instability of Electric Circuits", Proc. AIEE 33(1), Jan. 1914, pp.13-29 [web: https://ieeexplore.ieee.org/document/6661036]: energy supply "resulting from a lag of the effect behind the cause, or a hysteresis cycle", with "frequency transformation"; hunting treated explicitly. Bears on claim 2 (the source Discharges cites). - "The Natural Period of a Transmission Line and the Frequency of Lightning Discharges Therefrom", Electrical World, 27 Aug 1898 [web: tuks.nl; research/files/steinmetz-1898-natural-period-transmission-line-lightning.pdf]: same frequency-length table (4680 cycles at 10 miles to 475 at 100 miles). Bears on claim 4 (dates the f1 law to 1898). Page-image read needed for the equations. - "Electrical Disturbances and the Nature of Electrical Energy", GE Review 1912, address to the Association of Edison Illuminating Companies [web: tuks.nl; research/files/steinmetz-1912-electrical-disturbances-nature-of-electrical-energy.pdf]: cumulative oscillations "the most dangerous of all disturbances" (hunting, "certain internal transformer oscillations"); damage by repetition of small impulses from arcing grounds; ether as gas and solid, a contradiction. Bears on claims 1, 4, 7. - US 1,230,615 "Protective device" (filed 19 June 1913, granted 19 June 1917, GE) [web: https://patents.google.com/patent/US1230615A/en; research/files/US1230615-Steinmetz-protective-device-1917.pdf]: series inductance shunted by a resistance equal to the transformer's surge resistance sqrt(L/C), so high-frequency waves pass out of the transformer but are reflected from the line. Bears on claims 3 and 4. Further patents to read: US 1201646 (protective device, 1916), US 1658746 (lightning arrester, 1921). - Investigation of some trouble in the generating system of the Commonwealth Edison Co., Chicago, 1919 (1920) [web: HathiTrust full view]: field case of alternator groups oscillating; lag of field flux as damping. Bears on claim 2 (lag reasoning applied to a real system). - Other papers bearing on the claims, abstracts only: "Outline of Theory of Impulse Currents" (1916; claim 3); "Lightning Phenomena in Electric Circuits" (1907; claim 5); "Overdamped Condenser Oscillations" (1924; claim 3, r/L vs g/C); "Condenser Discharges Through a General Gas Circuit" (1922) and Hayden and Steinmetz "High-Voltage Insulation" (1923) (claims 2 and 6; not opened). Four Lectures on Relativity and Space (1923) for his mature field-of-energy view (claim 7).

2. Supporting information by others - Contemporary industry practice confirms that arcing grounds and resulting overvoltages were a real, recurrent operating problem in 1923: J. AIEE May and June 1923 discuss Creighton's "arcing ground suppressors" and neutral grounding [web: WorldRadioHistory J. AIEE 1923-05, 1923-06]. Bears on claims 1 and 4 (existence of the phenomenon; not on Steinmetz's mechanism). - Slepian and Peters (Westinghouse), "Surges on Transmission Lines", presented in the same April 1923 AIEE session as Steinmetz's third-class-conductor paper [web: J. AIEE April 1923 program]. A competitor's contemporary treatment; not read. Bears on claims 2-4. - Gilkeson, "Overvoltages on Transmission Lines" (1933) quotes the 1923 abstract [web: SciSpace snippet]: later uptake of Steinmetz's negative-resistance account. Not read. - Laboratory record of the 1922 lightning generator: AP story, NY Herald 3 Mar 1922, Steinmetz quoted "a discharge of 10,000 amperes at over 100,000 volts ... lasting for a hundred-thousandth part of a second" [web: https://www.loc.gov/resource/sn83045774/1922-03-03/ed-1/?sp=6]. Bears on claim 5 (from cloud theory to laboratory impulse tests). The figures are self-consistent (about 10^9 W, 10 kJ; Investigator's arithmetic).

3. Closely related work - Eric P. Dollard (Journal of Borderland Research 1990, vol. 46 no. 2; also 1982 "Introduction to Dielectric & Magnetic Discharges in Electrical Windings", "Four Quadrant Representation of Electricity", 2013 "Theory of Antirelativity"): builds on Steinmetz's symmetric treatment of magnetic and dielectric fields (Discharges pp.13-14) and on finite-velocity radiation as an energy component of inductance [web: OSE wiki copy]. Mainstream engineering does not accept Dollard's wider claims [memory: high]; recorded as that characterization, not as a reason to leave the work out. Bears on claims 3 and 7, and links this project to TernionAG and Moray vocabulary. - The arc oscillator line (Duddell singing arc 1900, Poulsen arc transmitter) is the standard negative-resistance account that Steinmetz adopted explicitly by 1917/1923 [memory: high; 1917 and 1923 adoption web-sourced above]. Primary Duddell and Poulsen sources not yet searched. - Steinmetz Decoded (modern independent study site, secondary): ether-to-field reading of Radiation, Light and Illumination (1909) vs Four Lectures on Relativity and Space (1923) [web]. Bears on claim 7.

4. The historical record - Schenectady County Historical Society, Steinmetz Papers (15 cu ft; finding aid 2017) [web: finding aid PDF in research/files/]: research notebooks with "Frequency transformation by third class conductor, with calculations, tables, graphs, and shorthand, March 23, 1922" (Box 5 no. 30e); "Nernst glower as oscillator" calculations (1922, June 1923); "Transformer Investigations", Sept 1912 (Series 3 no. 74); "Transient Phenomenon, Record sheets and diagrams, Chapters I-IX"; 1912 "tests on titanium and carbind" (possibly the Ti-C arc of Fig. 66; unconfirmed); air-breakdown experiments 1922; letterbooks 1907-1916. These would show whether Steinmetz measured the arc's energy supply himself. Records not examined; obtaining copies is an owner action. - Union College Schaffer Library, Steinmetz papers (75 digitised items): "Brief Note Regarding Lightning" (1915), "What is Electricity" (n.d.), relativity note (1915) [web: https://arches.union.edu/steinmetz-papers]. Not opened. - Carnegie Mellon "Charles Proteus Steinmetz Collection" and miSci "Steinmetz Digital Collection" (GE archives) seen in results, not reached. - No sign of the record going dark: Steinmetz published continuously on the arc and cumulative oscillation from 1912 to his death in Oct. 1923, with posthumous papers in 1924. Not an absence-of-evidence case.

Corrections to earlier documents

1. claims.md claim 2 ("Steinmetz gives no equation for this and states the mechanism 'is still practically unknown'") and facts.json (Discharges entry, summary point 4 and relevance: "He gives NO equation for the arc's energy supply"; "later steps must not credit him with a derivation"; mainstream_conflict: "Steinmetz ... does not use the words 'negative resistance' in the pages read"). These statements are accurate for Discharges Lectures VIII-X (1914), but incomplete about Steinmetz's work as a whole. In Theory and Calculation of Electric Circuits (1917), Ch. X, secs. 96-99, printed pp.187-197, he gives a quantitative treatment. The arc shunted by an oscillating circuit "has an effective negative resistance" -de/di, from the falling stationary characteristic, "and thereby generates alternating power, from the consumed direct-current power". He gives the oscillation condition (load resistance below that value) with a worked instance (18.5 ohm at 3 A), and the lag of the transient characteristic as what limits amplitude. In 1923 (Trans. AIEE 42:470) he states the mechanism as "a negative resistance, in combination with a source of power" [web: archive.org theorycalculatio00stei; ieeexplore 5060887]. He still writes "practically unknown" in 1917 sec. 85, so the quote stands. Suggested fix: add to claim 2 that later works (1917, 1923) give a negative-resistance account with numbers; the deep reader's "orientation" note (falling characteristic vs. lag loop) matches Steinmetz's own 1917 ordering.
2. claims.md claim 4 and facts.json: the line-discharge frequency law f1 = 7.5 x 10^9 / l0 and its table first appear in Steinmetz, Electrical World, 27 Aug 1898 (4680 cycles at 10 miles to 475 at 100 miles), not first in the Transient book [web: tuks.nl PDF, OCR]. The "danger frequencies" of 10,000-100,000 cycles are repeated in 1917 with "frequently been observed", still without a cited measurement.
3. Citation detail (minor): "Instability of Electric Circuits" is Proc. AIEE vol. 33 no. 1, Jan. 1914, pp.13-29 per IEEE; Wikipedia gives pp.2005-2021 (a Transactions 1913 pagination). Discharges' citation "A.I.E.E. Proceedings, Jan. 1914" agrees with IEEE.

Not reached (this run)

• Google Patents results pages 2-4 (about 21 more Steinmetz hits) and foreign family members: not reached (time limit).
• Carnegie Mellon finding aid; miSci / NY Heritage; Borderland Sciences original of Dollard 1990: not reached (time limit).
• Chronicling America: 34 more hits (1922 lightning generator coverage, 1923 obituaries): not reached (time limit).
• Union College items (lightning note, "What is Electricity"): not reached (time limit).
• Full texts of the 1914 and 1923 AIEE papers and the 1913/1914 discussion by other engineers: not reached (time limit; paywalled).
• Duddell (1900) and Poulsen arc primary sources; Cunningham 1911 artificial line; Peek corona formula check; German and French sources: not reached (time limit).