Capítulo D · Paul Dirac.
Redirecting to book7/ch-dirac.html… 2026-09-22. This file and book7/ch-dirac.html were two live copies of the same page. Leftover from the same Book IV→Book VII migration as ch-curie.html. One paragraph in this copy (a stale DOI byline) is not in book7's version -- book7 received the corpus's DOI-audit fixes and this root copy did not, so the difference is the defect being corrected, not lost content. Kept as a redirect so external links still resolve, following the convention set by book7/chcurie.html (merged 2026-08-25).