Jeans-JH: Investigator sites log

Run 1, 2026-10-08 (first run; no earlier sites.md)

Web time used: 9.6 minutes (cap 10). Chrome connected and used for all searches; curl used to save page texts and files for grepping. Notes: research/2026-10-08-*.md. Downloads: research/files/. Saved page texts: research/pages/ (evidence trail, not for publication).

Keywords tried (run 1, 2026-10-08)

Web (Chrome Google): - Jeans "Atomicity and Quanta" 1925 Rouse Ball lecture advanced retarded potentials - Jeans 1925 "advanced" potentials "Atomicity and Quanta" Wheeler Feynman OR Tetrode OR absorber - "E. P. Adams" 1901 charged spheres rotating magnetic effect convection current Philosophical Magazine - "Atomicity and Quanta" Jeans review Nature 1926 - site:ams.org "Atomicity and Quanta" Adams - "Jeans" 1925 convergent waves absorber "Lewis" 1926 "nature of light" advanced potentials history - Jeans 1905 "partition of energy between matter and æther" OR "partition of energy between matter and aether" Philosophical Magazine - "Jeans" papers archive correspondence "James Hopwood Jeans" Royal Society archive catalogue - history time-symmetric electrodynamics Tetrode 1922 Lewis 1926 Fokker "Jeans" 1925 half-advanced half-retarded precursor - "Jeans" "Atomicity and Quanta" "advanced potentials" OR "convergent waves" OR "source and sink" - Bothe Geiger 1925 "Zeitschrift für Physik" 32 639 "eingegangen" OR received April 1925 coincidence Compton - (Google Books) "Jeans" "Rouse Ball" lecture 1925 convergent waves quanta - Kragh Carazza 1994 "From time atoms to space-time quantization" Jeans - "Jeans" 1903 OR 1904 vibrational energy transfer collision exponential adiabatic "Landau-Teller" history "Jeans " - "Boltzmann-Jeans conjecture" Galgani Benettin arXiv - "Owen Willans Richardson" papers Harry Ransom Center finding aid Jeans - Wien 1924 "Abklingung" OR "Leuchtdauer" Kanalstrahlen Wasserstoff Hα Annalen der Physik decay time - Shuang-ren Zhao mutual energy flow retarded advanced waves photon source sink - Milne 1947 "James Hopwood Jeans" "Obituary Notices of Fellows" rsbm - "Jeans" 1925 "advanced waves" OR "advanced potentials" "non-radiating" atom history Ritz Einstein 1909 Scripted: archive.org advancedsearch creator:(Jeans, J. H.) OR creator:(Jeans, James); title:(radiation quantum) AND (Jeans); Europe PMC TITLE:"nature of light" AND AUTH:"Lewis GN"; CalmView "Jeans quanta" (database error); HathiTrust ls "Atomicity and Quanta" convergent (did not run); arXiv API ti:"Still Shrouded in Mystery" and id 1606.08710 (no response). Not yet tried (for next runs): German and French forms ("Jeans" "Atomistik und Quanten"; "Jeans" "Strahlung" 1925 "avancierte Potentiale"); "Jeans" "Rouse Ball" Cambridge Reporter 1925; "Dynamical Theory of Gases" review 1904 Nature/Science; "Jeans" "subsidiary temperatures"; "Jeans" "temperature of incandescence"; "Jeans" "normal state" dissipative gas Poincaré 1905; Jeans 1910 Phil. Mag. "Planck's law" proof; Galgani "Planck" classical metastability; "Lewis" 1926 "absorber" Jeans; Tetrode 1922 citations of Jeans; "Jeans" "fine-structure constant" 4πe tube of force; Bucherer 1908 "Jeans"; "Kauffmann" "Jeans" 1911 review.

Leads for review (run 1)

Priority 1, the inventor's own work - Jeans, Nature 71, 607 (27 Apr 1905), reply to Rayleigh. It states the 1904 theory as a time-scale claim: equipartition is the true final ratio, but "millions of years would hardly suffice for any perceptible change". Bears on claims 1-2. [web: files/montambaux/04-...pdf, read from page image] - Jeans, Dynamical Theory of Gases, 2nd ed. 1916: preface and Ch. I hand the internal-mode problem to the quantum theory ("at best only partial, but... probably... satisfactory"), and the classical difficulties are "left unsolved". This is Jeans's own revision of claims 1-2. [web: archive.org dynamicaltheoryo00jeanuoft] - Jeans, Report on Radiation and the Quantum-Theory 1914: restates the slow-transfer argument ("millions of years", citing Gases Ch. IX) and records the 1913 BA Birmingham debate (Larmor, Love). Claims 1-2, 5. [web: archive.org cu31924012330407] - Jeans, Report, 2nd ed. 1924, §§85-87: the h vs (4 pi e)^2 tube-of-force relation (claim 7), the Lorentz and G. I. Taylor (Proc. Camb. Phil. Soc. 15, 114, 1909) and G. P. Thomson (Proc. Roy. Soc. 104A, 115, 1923) evidence, and "matter, and not ether or radiant energy" as what quantises (claim 5). It supplies the references the 1925 lecture omits. No advanced or convergent waves in 1924, which dates that step to the 1925 lecture. [web: archive.org bwb_W9-CSF-029] - Jeans, Math. Theory of Electricity and Magnetism, 4th ed. (1919, new relativity chapter) and 5th ed. (1927): he revised the 1911 ether stance himself, but the 1927 text still reads Bucherer as showing the electron mass "wholly electromagnetic" (a = 1.874 x 10^-13 cm). Claim 4. [web: archive.org 5thedmathematica00jeanuoft] - Jeans's 1900-1905 papers, Solvay 1911 report, Phil. Mag. 1905 "partition of energy between matter and aether", saved, not yet read. Claims 1-2. [web: files/montambaux/] - Royal Society JHJ papers: 1901-1907 sanatorium correspondence from when he completed the gas theory; HRC holds 23 letters to O. W. Richardson. Claims 1-2, 5-6. [web: catalogues.royalsociety.org JHJ]

Priority 2, supporting information by others - Boltzmann-Jeans conjecture: Benettin, Galgani, Giorgilli (Comm. Math. Phys. 121, 557, 1989; Birkhauser 1993), Benettin (1992), Benettin-Carati-Gallavotti (1995), and many later arXiv papers. They prove exponentially slow energy exchange with fast vibrational modes in classical models and name the "Jeans-Landau-Teller approximation" after Jeans (Phil. Mag. 1903, 1905). This is later rigorous support for the mechanism of claim 2 (time scales, not equilibrium heat capacities). [web: air.unimi.it; files/benettin-carati-gallavotti-1995-jeans-landau-teller.pdf] - R. C. Tolman, review, Physical Review 1926 p.1048. A fair contemporary summary of claim 6 (new solutions allowing "convergence of spherical waves into an absorbing atom"). It notes that Compton-Simon and Bothe-Geiger, reported "almost simultaneously", "greatly increased the difficulties of the wave theory". [web: Google Books] - E. P. Adams, review, Bull. AMS 32 (1926) p.720. Favourable and brief, by the experimenter whose 1901 spheres the lecture uses; it does not comment on that use. [web: ams.org] - F. H. Loring, Chemical News 134 (4 Mar 1927) pp.129-130. He takes up Jeans's "reversibility or convergence" picture of the photoelectric effect as promising, and notes Jeans did not offer it as a solution. [web: archive.org] - O. Lodge, Nature 118, 81 (17 Jul 1926): credits Jeans with the 8 pi R factor of the Rayleigh-Jeans law. Historical record for the radiation-law side of claim 1. [web: Montambaux file 12]

Priority 3, closely related work - Time-symmetric electrodynamics lineage: Schwarzschild 1903, Ritz-Einstein 1909 dispute (Ritz blamed advanced potentials for the Rayleigh-Jeans catastrophe, per a shadetreephysics snippet), Tetrode Dec 1922 (Z. Phys. 10, 317), G. N. Lewis 1926 PNAS, Fokker 1929, Wheeler-Feynman 1945. The Wikipedia history omits Jeans 1925; Kennefick 1997 does not mention Jeans. Bears on claim 6: Jeans's half-advanced plus half-retarded potential and his source-sink pair sit inside this lineage but are not recorded in its standard histories. Whether Jeans knew Tetrode or Ritz is open. - Shuang-ren Zhao, "mutual energy flow" (arXiv:1606.08710 and later): the photon as a retarded wave from the source plus an advanced wave from the sink, the same source-sink structure as Jeans's two-atom solution. Outside mainstream venues; reported as related work. - Kragh and Carazza 1994, on discrete time 1925-1936, cite Atomicity and Quanta p.8 (space-time continuity, claim 5). Not read.

Priority 4, historical record - Bothe-Geiger reported April 1925 (Z. Phys. 32, 639); Compton-Simon published 1 Sep 1925 (Phys. Rev. 26, 289). Lecture 11 May 1925. So one coincidence result predates the lecture by weeks and the other follows it by months. [web: Wikipedia] - E. P. Adams 1901 (Phil. Mag. [6] 2, 285-299) was done at the Jefferson Physical Laboratory, Harvard. It used two sets of 16 copper spheres, a 10,000-cell battery and 75-85 rev/s, and measured magnetic (convection) effects, not radiation. [web: archive.org] - Milne 1947 obituary (free at Royal Society Publishing) and a Science 105 (1947) obituary typescript among the Chandrasekhar papers (UChicago): not yet read.

Corrections to earlier documents (for the orchestrator)

1. deep/AtomicityQuanta-df752a.md §10b note says "[memory medium] E. P. Adams (Edwin Plimpton Adams) was a Princeton physicist, a colleague in the years Jeans taught at Princeton". The 1901 experiment itself was signed from the "Jefferson Physical Laboratory, Harvard University, Cambridge, Mass." [web: Phil. Mag. [6] 2 (1901) p.285ff., archive.org londonedinburgh621901lond]. The spheres were copper (spun hemispheres) on brass rods, two sets of sixteen. Jeans's lecture says "brass spheres", so this is a small inaccuracy in the lecture, worth a note. Adams's later Princeton post is not contradicted.
2. claims.md "Thread" and facts.json (Gases entry, mainstream_conflict; deep read §9) say Jeans "accepted quantum theory by 1913-14 ([memory] medium)". Hudson 1989 (Stud. Hist. Phil. Sci. 20) dates his shift to the quantum side to 1910 [web: files/montambaux/jeans-comment-Hudson.pdf, abstract]. The lecture itself credits "myself (1910)" with reversing Planck's analysis [read: Atomicity p.9]. Suggested wording: "accepted the quantum hypothesis during 1910 (Hudson 1989); his 1914 Report then spread it".
3. Deep read §11a asked to check the Bothe-Geiger and Compton-Simon dates against 11 May 1925: Bothe-Geiger April 1925 (before), Compton-Simon September 1925 (after) [web: Wikipedia]. Tolman 1926 calls them "almost simultaneous" [web: Google Books].

Not reached this run (next run starts here)

• Read the saved files (no web time needed): Montambaux 07, 08, 11, 13, Jeans 1903 papers, Hudson 1989 in full, Einstein 1909.
• Milne 1947 obituary (open the PDF in Chrome and read page images); Nature 117, 46 review (try dbc.wroc.pl scans); G. N. Lewis 1926 PNAS (scan); Ritz-Einstein 1909 note (retry); HRC Richardson finding aid; Royal Society JHJ/2 item list; Taylor & Francis Jeans 1903; Kragh-Carazza 1994; Wien's decay-time paper; German-language searches.