Uncertainty principle
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In quantum mechanics, the uncertainty principle is any of a variety of mathematical inequalities asserting a fundamental limit to the precision with which certain pairs of physical properties of a particle, such as position x and momentum p, can be known simultaneously. The more precisely the position of some particle is determined, the less precisely its momentum can be known, and vice versa. The original heuristic argument that such a limit should exist was given by Werner Heisenberg in 1927, after whom it is sometimes named, as the Heisenberg principle. A more formal inequality relating the standard deviation of position σx and the standard deviation of momentum σp was derived by Earle Hesse Kennard later that year (and independently by Hermann Weyl in 1928),
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- Related: Canonical commutation relation, Correspondence principle, Correspondence rules, Gromov's non-squeezing theorem, Heisenbug, Observer effect (physics), Quantum indeterminacy
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| Stanford Encyclopedia of Philosophy entry Stanford Encyclopedia of Philosophy entry plato.stanford.edu/entries/qt-uncertainty/ - Web |
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| Common Interpretation of Heisenberg's Uncertainty ... Common Interpretation of Heisenberg's Uncertainty Principle Is Proved False www.scientificamerican.com/.../article.cfm?id=common-interpretation-of-heisenbergs-uncertainty-principle-is-proven-false - Web |
