ritz-btr.narod.ru and Chappell wiki: Pobedonostsev and Parshin's modern repeat (2026-10-07)

Queries: Pobedonostsev Parshin Ives-Stilwell experiment (Google, Chrome); WebFetch of https://wiki.naturalphilosophy.org/index.php?title=Lev_A_Pobedonostsev (Chrome refused the domain: "Permission denied").

Found [web]: - PDF https://ritz-btr.narod.ru/pobedonostsev.pdf (a site devoted to Ritz's ballistic theory), downloaded as research/files/Pobedonostsev-Ives-Stilwell-Doppler-ritz-btr.pdf: L. A. Pobedonostsev and P. F. Parshin, SPIE conference paper (footer: downloaded from proceedings.spiedigitallibrary.org 2015; exact SPIE volume and year not yet read). Abstract: a "modern Ives experiment with the canal rays", beam of excited hydrogen atoms from H2+ ions accelerated at 150 keV to 2,000 keV; "There is a systematic deviation in the results obtained from those according to the special theory of relativity"; a "classical mechanical approach" is offered. Conclusion: results "do not confirm the relativistic theory", with "considerable deviations (more than twice)" in the 150-300 keV range. - Chappell Natural Philosophy Society wiki: Pobedonostsev at the V. G. Khlopin Radium Institute, St Petersburg; Parshin at the Academy of Civil Aviation; papers 1991-1995 ("Experimental Investigation of a Relativistic Effect" 1991 ... "Once Again About the Doppler Effect" 1995). An IEEE Xplore item "Experimental Studies of the Doppler Effect" (Pobedonostsev 1995, cited by 4) also appeared in the search.

Bearing: an independent repeat at 10-100 times Ives's voltages that reports disagreement with special relativity (supporting information, priority 2, for an ether or classical reading in general, though not necessarily for Ives's own formula, which predicts the same factor as SRT). Mainstream repeats at higher precision report agreement (Botermann 2014, see 2026-10-07-arxiv.md). Both stand in the record; the reviewers weigh them. Find the SPIE citation and data tables.