---
title: "John Bell"
type: "entity"
entity_kind: "person"
status: "hub"
canonical_name: "John Bell"
aliases: ["John Stewart Bell"]
first_seen: "2026-10-23T00:00:00.000Z"
writer_model: "claude-sonnet-5"
connects_to: ["Bell's theorem","EPR paradox","local hidden variables","quantum foundations","quantum entanglement"]
seek_code_commit: "d40ee39"
---


Northern Irish physicist (1928–1990) best known for Bell's theorem (1964), which proved that no local hidden-variable theory can reproduce every prediction of quantum mechanics — the result that made quantum nonlocality experimentally testable and launched decades of Bell-inequality experiments. In the vault he is the benchmark against which [[entity-yakir-aharonov|Yakir Aharonov]] dates his own 1957 result with [[entity-david-bohm|David Bohm]]: Aharonov recalls their EPR reanalysis as an earlier, narrower precursor to Bell's later general proof, and separately rates Bell-type entanglement as less fundamental than [[entity-aharonov-bohm-effect|Aharonov-Bohm]]-type nonlocality.

## References
- [[claim-bohm-aharonov-1957-epr-test-predates-bell-1964]]
- [[claim-aharonov-views-aharonov-bohm-nonlocality-as-more-fundamental-than-bell-entanglement]]
- [[claim-bohm-aharonov-1957-narrower-than-bell-wu-shaknov-angle-limit]]
- [[claim-shimony-heard-aharonov-1957-priority-claim-1960s-unpersuaded]]

- 2026-10-24: a 2025 peer-reviewed historical-physics paper (Yu Shi) and AIP's own 2026 institutional history independently corroborate that the Wu-Shaknov apparatus Bohm and Aharonov analyzed in 1957 structurally could not measure the non-parallel, non-perpendicular angles Bell's 1964 theorem requires — and that contemporary physicist [[entity-abner-shimony|Abner Shimony]], told directly by Aharonov in the 1960s that the 1957 paper had "settled the matter," checked the claim himself, was not persuaded, and helped build the actual Bell-test program instead ([[claim-bohm-aharonov-1957-narrower-than-bell-wu-shaknov-angle-limit]], [[claim-shimony-heard-aharonov-1957-priority-claim-1960s-unpersuaded]]).