# uncertainty principle

*uncertainty principle*on Thesaurus.com

the principle of quantum mechanics, formulated by Heisenberg, that the accurate measurement of one of two related, observable quantities, as position and momentum or energy and time, produces uncertainties in the measurement of the other, such that the product of the uncertainties of both quantities is equal to or greater than h/2π, where h equals Planck's constant.

## Origin of uncertainty principle

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- Also called indeterminacy principle, Heisenberg uncertainty principle.

## Words Nearby uncertainty principle

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

## How to use uncertainty principle in a sentence

Ingenious quantum scientists showed that teleportation can make an end run around the

*uncertainty principle*and achieve a real-world result, secure telecommunications.What You’re Doing Right Now Is Proof of Quantum Theory - Issue 108: Change | Sidney Perkowitz | November 24, 2021 | NautilusThis was revolutionary because in quantum theory, one cannot exactly clone, say, a photon with an unknown polarization, since making copies would provide a way to evade the

*uncertainty principle*.What You’re Doing Right Now Is Proof of Quantum Theory - Issue 108: Change | Sidney Perkowitz | November 24, 2021 | NautilusIn 1927, Werner Heisenberg announced his

*uncertainty principle*, the core idea underlying the newborn math for describing nature known as quantum mechanics.The Top 10 scientific surprises of Science News’ first 100 years | Tom Siegfried | September 20, 2021 | Science News

## British Dictionary definitions for uncertainty principle

the principle that energy and time or position and momentum of a quantum mechanical system, cannot both be accurately measured simultaneously. The product of their uncertainties is always greater than or of the order of h, where h is the Planck constant: Also known as: Heisenberg uncertainty principle, indeterminacy principle

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

## Scientific definitions for uncertainty principle

[ ŭn-sûr′tn-tē ]

A principle, especially as formulated in quantum mechanics, that greater accuracy of measurement for one observable entails less accuracy of measurement for another. For example, it is in principle impossible to measure both the momentum and the position of a particle at the same time with perfect accuracy. Any pair of observables whose operators do not commute have this property. As defined in quantum mechanics, it is also called Heisenberg's uncertainty principle. Similar uncertainty principles hold for non-quantum mechanical systems involving waves as well.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

## Cultural definitions for uncertainty principle

The statement in quantum mechanics, formulated by Werner Heisenberg, that it is impossible to measure two properties of a quantum object, such as its position and momentum (or energy and time), simultaneously with infinite precision.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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