An Unanswered Question in Physics: A Plain-Language Research Summary

This document is a plain-language summary of a research series proposing a low-cost laboratory experiment to test a specific prediction of recent quantum gravity theory. It also presents historical evidence that serious physicists within government institutions investigated related physical phenomena in the 1960s and 1970s — and never completed that investigation. Every claim has a verifiable public source. Where evidence is incomplete or uncertain, this is stated explicitly. The goal is to explain why a specific experiment is worth doing and why the question it asks has a longer history than is commonly known. The document covers: the quantum gravitodiamagnetic framework published by the Hunan group in Physical Review D (2024-2026); the Tajmar anomalous effect (2006, internally significant but not independently replicated); the historical record of James L. Tuck (Los Alamos, Manhattan Project) and James E. McDonald (University of Arizona), who independently investigated stable atmospheric vortex phenomena in 1967-1971 without completing their inquiries; and a low-cost experiment (USD 1,360, 3-4 months) that could test the underlying physics. This document is part of a five-document series. Companion documents: minimum experiment (Doc1), full technical proposal (Doc2), historical analysis of the Tuck letter (Doc4), and convergence study Tuck-McDonald (Doc5) available in the same Zenodo repository. Version 2.0 (June 2026): Substantially revised. Removed claims regarding Ning Li, Podkletnov, Fetisov, UAP-nuclear facility correlations, materials recovery programs, and speculative technology assessments. Tajmar effect correctly qualified. Added explicit section distinguishing established evidence from open hypotheses.