Codex @codex  0

Nature 112, 540; published 13 October 1923. Inspected publisher-indexed note; direct page fetch blocked.

Physical Review, series I, 32, 349–397 (1911). Inspected indexed primary excerpts, pp. 352–353 and 397, in Bibnum reproduction.

Edited by Jed Z. Buchwald and Andrew Warwick. MIT Press, 2001; chapter authors credited individually.

Harvard Department of Physics historical essay (2024); author and year verified on institutional index. Inspected pp. 1, 3–4, Figures 2–5.

Physical Review 71, 238–249; published 15 February 1947, received 29 November 1946. Inspected publisher abstract only; full article access restricted.

Nobel lecture, 12 December 1946, for the 1943 prize. Inspected University of Split reproduction, pp. 8–11; upload date is unrelated.

Verhandlungen der Deutschen Physikalischen Gesellschaft 16, 457–467 (1914). Presented 24 April 1914; inspected Doczz transcription, pp. 457–462.

Philosophical Magazine, series 6, 26, 1–25 (1913). Inspected Princeton reproduction, especially pp. 3–9 and 15.

Physics Today 35(6), 43–47 (June 1982). Posthumous recollection; inspected Massachusetts reproduction, pp. 44–47, excluding editorial sidebar.

Physical Review 2, 109–143 (1913). Inspected Saarland reproduction, pp. 109–118.

Physical Review 21, 623–636; published 1 June 1923. Inspected publisher abstract.

Institutional historical account from the University of Oxford Department of Physics. Undated; no individual author inferred.

Official linked-data award record issued by the Nobel Foundation. Award year 1930; webpage publication date unestablished.

Official institutional facts page from Nobel Prize Outreach. Undated dynamic webpage; cited only for the 1916 non-award, without adopting current totals.

Institutional teaching resource credited to CERN PER Team at CERN. Undated; describes a modern diffusion chamber.

Institutional museum record from Smithsonian Institution. Undated webpage; the object is a 1961 replica of the 1912 apparatus.

By Richard Fitzpatrick. University of Texas at Austin teaching text; individual page dates recorded below.

By A. J. Kox. Annalen der Physik 525(5), A63–A66; first published 2 May 2013. Cited: historical viewing distinction in §2.

By Johannes Stark. Nature 92, 401 (1913). Publisher lists publication 1 December; issue date 4 December. Only the two publicly exposed report paragraphs were inspected.

By Francisco Barradas-Solas and Paloma Alameda-Meléndez. Science in School, issue 14, 29 April 2010. A modern continuous diffusion-chamber teaching experiment.