- Bell's theorem
- Bell's Interconnectedness theorem, proved by the physicist John Bell in 1964, asserts that no local model of reality can do justice to the facts of quantum behaviour. A local model of reality is one in which all causal connections propagate by signals that travel at less than the speed of light. Bell showed that quantum mechanics describes correlations that cannot be explained by a local model. The theorem considers a set-up which is a variation on that of the Einstein–Podolsky–Rosen thought experiment, and proves that if reality is local, we would expect certain defined measurements to show a certain inequality (the Bell inequality). But in fact the experimental results are otherwise, suggesting a conflict with relativity theory, which appears to require locality. Interpreters disagree whether the conflict is real—for example, perhaps one should say that the correlations are unexplained brute facts.

*Philosophy dictionary.
Academic.
2011.*

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**Bell's theorem**— is a theorem that shows that the predictions of quantum mechanics (QM) are not intuitive, and touches upon fundamental philosophical issues that relate to modern physics. It is the most famous legacy of the late physicist John S. Bell. Bell s… … Wikipedia**bell's theorem**— noun Usage: usually capitalized B Etymology: after John Stewart Bell died 1990 Irish physicist : a theorem in quantum physics: two particles that have interacted will continue to influence each other instantaneously following separation … Useful english dictionary**Bell-Ungleichungen**— Die Bellsche Ungleichung ist eine Schranke an Mittelwerte von Messwerten, die 1964 von John Bell angegeben wurde. Die Ungleichung gilt in allen physikalischen Theorien, die real und lokal sind und in denen man unabhängig vom zu vermessenden… … Deutsch Wikipedia**Bell test experiments**— The Bell test experiments serve to investigate the validity of the entanglement effect in quantum mechanics by using some kind of Bell inequality. John Bell published the first inequality of this kind in his paper On the Einstein Podolsky Rosen… … Wikipedia**Bell series**— In mathematics, the Bell series is a formal power series used to study properties of arithmetical functions. Bell series were introduced and developed by Eric Temple Bell.Given an arithmetic function f and a prime p, define the formal power… … Wikipedia**Bell polynomials**— In combinatorial mathematics, the Bell polynomials, named in honor of Eric Temple Bell, are a triangular array of polynomials given by the sum extending over all sequences j1, j2, j3, ..., jn−k+1 of non negative integers such that … Wikipedia**Bell , John Stuart**— (1928–1990) British physicist Born into a poor family in the Northern Irish capital of Belfast, Bell was encouraged by his mother to continue his education after leaving school at sixteen. Consequently, after working for a year as a laboratory… … Scientists**Bell, Eric Temple**— ▪ American mathematician born February 7, 1883, Aberdeen, Aberdeenshire, Scotland died December 21, 1960, Watsonville, California, U.S. Scottish American mathematician, educator, and writer who made significant contributions to analytic… … Universalium**Kochen-Specker theorem**— In quantum mechanics, the Kochen Specker (KS) theorem [S.Kochen and E.P. Specker, The problem of hidden variables inquantum mechanics , Journal of Mathematics and Mechanics 17, 59 87 (1967).] is a no go theorem provedby Simon Kochen and Ernst… … Wikipedia**Bellsches Theorem**— Die Bellsche Ungleichung ist eine Schranke an Mittelwerte von Messwerten, die 1964 von John Bell angegeben wurde. Die Ungleichung gilt in allen physikalischen Theorien, die real und lokal sind und in denen man unabhängig vom zu vermessenden… … Deutsch Wikipedia