Hilgenberg-OC: Investigator site log

Run 1: 2026-10-06 (first run; no earlier sites.md). Normal run, 10-minute cap. Web time used: about 8 minutes (date +%s 1791320616 to 1791321095). Chrome (claude-in-chrome) used for everything. Nothing was downloaded: downloads need the owner's approval, so candidate files are listed under "Downloads to approve". Notes for each site are in research/2026-10-06-{site}.md.

Keywords tried

Google (Chrome): 1. "Why expanding Earth" Hilgenberg Scalera Jacob pdf 2. Hilgenberg "Strömungsversuche mit Senken und Quellen" 3. Hilgenberg "Umkehrung des Magnuseffekts" OR "Umkehrung des Magnuseffektes" 4. "inverse Magnus effect" OR "negative Magnus effect" Hilgenberg 1933 5. "Die Wiederkehr des Raummediums Äther" Hilgenberg 6. Hilgenberg Dissertation 1938 abgelehnt "Fakultät für Maschinenwesen" OR Universitätsarchiv 7. "Hilgenberg" "Brotherhood of the Bell" Farrell torsion 8. Carl F. Krafft "The Ether and its Vortices" 1953 Hilgenberg 9. "Über Gravitation, Tromben und Wellen" Hilgenberg pdf OR digitalisat Site searches: Earth-Prints "Hilgenberg"; DNB "Hilgenberg Ott Christoph" (blocked); archive.org full text Hilgenberg Erdball OR Hilgenberg Gravitation OR "Ott Christoph Hilgenberg" (0) and "Hilgenberg" Äther; archive.org search inside the 1933 item for Äther; naturalphilosophy wiki "Hilgenberg"; Met Office catalogue "Hilgenberg" (search URL failed).

Not yet tried (keywords for next run, built from the documents): "Das Rätsel Gravitation gelöst" 1929 Kassel; "Über den Magnus-Effekt und seine Umkehrung" Charlottenburg; "Wirbelringnatur atmosphärischer Erscheinungen" 1932; "Quantenzahlen, Wirbelring-Atommodelle" 1959; "Heliumsechsring"; "swallowing constant" ether stream Runcorn 1967; "Why Earth expansion" 1967 Berlin; "Erdentstehung und Entwicklung" 1976; "Meterprototypen" Erddurchmesser 1934; "Geotektonische Forschungen 45"; "Kennedy-Channel-Scherung"; Hilgenberg + Westphal Senken Quellen; Bjerknes pulsating spheres hydrodynamic analogy gravitation; Hilgenberg + Fricke Schwerkraft Temperatur; Hanni Drewer; Helge Hilgenberg; "Lautenthaler Montanistisches Colloquium" 2001; "Erdexpansion ad acta" TU intern 2001; Nerad Hilgenberg IGF; Quiring Hilgenberg; Zeil Erdexpansion; "Und sie bewegt sich doch" arte 2007 Fitzke; Hilgenberg + Riemann Äther; Yarkovsky "Hypothèse cinétique" Gallica; Hilgenberg + "Getriebelehre" TH Berlin 1934; Hilgenberg Volkssturm; Staatsbibliothek Oberbibliothekar 1950.

Leads for review

Every item is a lead, not a verdict. Tags: [web] with the URL in the research note.

1. The inventor's own work

• Vom wachsenden Erdball (1933), full scan and OCR online (archive.org Hilgenberg1933; nuclearplanet.com, freely reproducible with Helge Hilgenberg's permission). Bears on claims 1-5. Key points read [web: page image, archive.org scan n20-n21]:
• Gravity: from the relativity of motion ("of motion only, not of time") and the equality of heavy and inertial mass, he concludes gravitation is ether flowing into matter; masses are 3-D ether sinks; a field is an ether stream of definite velocity; a body accelerates because a sink sits in a stream. He says he reached this independently of Riemann. He openly lists as unanswered how ether enters atoms and becomes mass, and points to radioactivity (matter into radiation) as reason to consider the reverse. (Claims 1, 2, 6.)
• Flow effects he treats as independent of the medium: Magnus effect and its inversion; two sinks attract, two sources attract, a sink and a source repel; a sink in a stream accelerates with it; fixed sinks and sources start to rotate. His own experiments with circular and linear sinks are in the 1931 booklet (pp.14-15); he credits Westphal with earlier one-dimensional sink/source experiments. (Claim 4.)
• Numbers: the shelf-sphere diameter is 0.62-0.65 of today's (his own paper-on-globe construction, which he invites readers to repeat); with constant density, V/V' = M/M' = 0.6^3 = 0.216; exponential growth V' = V e^(mu t) with t = 1 Gyr = 3x10^16 s gives mu about 5x10^-17 per second (printed "g/sec"); "1 g hydrogen would make about 15 million new molecules per second"; mu larger if the Paleozoic is only 100 Myr old. Checked [calculation]: ln(4.63)/3x10^16 = 5.1x10^-17. This explains the folder document's "60%" (a diameter ratio) and "nearly doubling" (1/0.6 = 1.67). The 4590 km and 4 mm/yr figures belong to the 1965 paper. (Claim 3.)
• Predicted consequences: Earth's intrinsic temperature rises with mass; orbits widen, spin speeds up, days shorten and years lengthen (1931 booklet pp.43-50, 68-72). (Claims 2, 4.)
• Geology: North America split along a Mackenzie-Florida shear line (about 2000 km strike-slip) and an Alaska line, with listed fault, gravity and earthquake evidence; he predicted a shelf area near the then-unexplored North Pole. (Claim 5.)
• 1931 Über Gravitation, Tromben und Wellen in bewegten Medien: copy at Met Office Library, UK (PAMPHLET P007(HILG), available for loan). It holds the full gravity theory and his own sink/source experiments. (Claims 1, 2, 4.)
• 1967 "Why Earth expansion?" was a talk at TU Berlin on 7 Feb 1967 (16 pp.), per Scalera 2021's references. (Claims 1-3.)

2. Supporting information by others

• Witnesses: Rainer Fiedler-Volmer (TU Berlin geology student, early 1960s) and Dr.-Ing. Hermann H. Oppermann knew Hilgenberg at the geological institute; Fiedler-Volmer describes his persistence against rejection and "sometimes even insulting ignorance" (TU intern reader responses, 2001; read in translation). Bears on the reception history (claim 6).
• German Wikipedia: Hilgenberg was supported over decades with a TU workroom by geology professors Heinrich Quiring and Werner Zeil (Zeil "a long-time adherent of Earth expansion").
• 2001 Lautenthal colloquium (more than 80 attendees, press and TV) and Scalera's four replica globes (now at Museo di geofisica, Rocca di Papa); "globe workshops in more than ten countries" (Scalera via Jacob). These are advocates, not independent tests.
• Recorded criticism in the same forum (stated so the reviewers can weigh it): G. Bruhn (TU Darmstadt): mass conservation, subduction shown by tomography, no quantitative support for a decreasing G, meteorite input far too small; R. Seiler (TU Berlin): arguments "gut-feeling"; U. Thorweihe (TU Berlin): no discussion of expansion in modern geoscience.

3. Closely related work

• I.O. Yarkovsky, Hypothèse cinétique de la gravitation universelle en connexion avec la formation des éléments chimiques (Moscow 1888, per Scalera; dates disputed): ether inflow as the cause of gravity, with conversion into matter inside bodies, so bodies grow. This is the same principle as claims 1-2, 45 years earlier. (naturalphilosophy wiki.)
• G. Scalera (2021), GNGTS extended abstract: "central torrent" ether converging on the geocentre and turning into matter, traced to Johann Bernoulli; a first attempt to estimate ether density, velocity and flux; cites geoneutrino results (Borexino, KamLAND) as corroboration (Scalera's characterization; Scalera is an interested party). Bears on claims 1-2, and gives the numbers the folder document lacks.
• C.F. Krafft, The Ether and its Vortices (Washington 1953), translated with supplements by Hilgenberg; Krafft's Ether and Matter tells readers to read Hilgenberg's 1939 and 1931 booklets (PDF found, not opened). Vortex-ether lineage (claims 1, 4).
• Le Sage / Fatio push-gravity and Miller's ether drift, placed beside Hilgenberg by Thielmann (2015, transcript). Thielmann calls Miller's result a later successful detection, while the folder document calls it flawed; both are characterizations.
• Pascual Jordan (after Dirac): expansion from a decreasing gravitational constant, a different mechanism (raised by Bruhn, 2001).
• J. Marvin Herndon, Whole-Earth Decompression Dynamics: a rival growth model with no new matter (Herndon is an interested party).
• J.P. Farrell, SS Brotherhood of the Bell (2006) and The Philosopher's Stone: popular accounts that discuss Hilgenberg's 1931 vortex physics, the Magnus booklets and the 1959 vortex-ring atom models (snippets mention "Neon Model", "Krypton Model"). These are later secondary accounts by an author with a speculative thesis; not read.
• For next run, to check [memory, medium confidence]: Hilgenberg's sign rule (like sinks attract, sink and source repel) matches the 19th-century Bjerknes hydrodynamic analogy with pulsating spheres (C.A. and V. Bjerknes, Fields of Force, 1906). That analogy is related prior work the 1933 book does not cite (it cites Westphal).

4. Historical record

• Thesis rejection: three accounts now on record. (a) Scalera-Braun 2003 (folder): rejected by the examination committee over the conflict with physics and politics. (b) German Wikipedia: rejected in 1938 by the Fakultät für Maschinenwesen, mainly over the conflict with relativity. (c) Thielmann 2015 and zillmer.com: submitted 1937, rejected. None cites the faculty file. The deciding record is the TU Berlin Universitätsarchiv doctoral file (not reached). Absence analysis: the rejection is documented in secondary accounts only; a faculty file would show the referees and their stated reasons.
• NSDAP refusal blocking a professorship: in Scalera-Braun, Jacob (TU intern 2001) and German Wikipedia. All three trace to the same advocacy circle (Jacob and Scalera); no independent record yet (TU personnel file 1934-1938, Chair of Getriebelehre).
• Wartime and postwar: TH library work; recovery of 10,000 books from the former Luftkriegsakademie Gatow via the British; Oberbibliothekar at the Staatsbibliothek (East Berlin) 1947-1950, dismissed 1950 (German Wikipedia; Jacob 2001). Records: Staatsbibliothek personnel files.
• TU intern follow-ups: "Unsere Erde: Theorien und Emotionen" (June 2001) and "Erdexpansion 'ad acta' gelegt" (July 2001, the expert reply by "Mr. Franz" and colleagues); the Nerad appendix based on correspondence with the Institut für Gravitationsforschung (2002); NCGT La Junta 2002 conference report (PDF 4 MB). All on the Wayback Machine, not opened.
• Documentary: "Und sie bewegt sich doch!" (ZDF/arte 2006, dir. Franz Fitzke, broadcast 31 Jan 2007).

Downloads to approve (none made this run)

• https://archive.org/download/Hilgenberg1933/Hilgenberg%201933_djvu.txt (158.6 KB, OCR text of the 1933 book) and Hilgenberg 1933.pdf (30.5 MB) -> research/files/
• Scalera 2021 GNGTS PDF, 1.44 MB, from https://www.earth-prints.org/handle/2122/14738 -> research/files/
• C.F. Krafft, Ether and Matter PDF (size unknown) from library.pyramidal-foundational-information.com (third-party host; check provenance first)

Next run starts with

Recheck the positive sites (Earth-Prints results 11-44; the rest of the 1933 book, especially the reference list naming Westphal and Fricke); retry DNB; then the sites not reached: Gallica (Yarkovsky), TU Berlin Universitätsarchiv, Schweizerbart TOC, Google Books/HathiTrust (Z. techn. Phys. 1933), Springer (Geol. Rundschau 1965).