uncertainty principle


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uncertainty principle

n.
A principle in quantum mechanics holding that greater accuracy of measurement for one observable quantity entails less accuracy of measurement for another conjugate quantity.

uncertainty principle

n
(General Physics) 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 or indeterminacy principle

uncer′tainty prin`ciple


n.
the quantum-mechanical principle, formulated by Heisenberg, that measuring either of two related quantities, as position and momentum or energy and time, produces uncertainty in measurement of the other.
[1930–35]

un·cer·tain·ty principle

(ŭn-sûr′tn-tē)
A principle in quantum mechanics stating that it is impossible to measure both the position and the momentum of very small particles (such as electrons) at the same time with accuracy. According to this principle, the more accurately the position of a small particle is known, the less accurately its mass and velocity can be known, and the more accurately its mass and velocity are known, the less accurately its position can be known. The uncertainty principle and the theory of relativity form the basis of modern physics.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.uncertainty principle - (quantum theory) the theory that it is impossible to measure both energy and time (or position and momentum) completely accurately at the same time
scientific theory - a theory that explains scientific observations; "scientific theories must be falsifiable"
quantum theory - (physics) a physical theory that certain properties occur only in discrete amounts (quanta)
Translations

uncertainty principle

n (Phys) → Unbestimmtheits- or Ungenauigkeits- or Unschärferelation f
References in periodicals archive ?
Heisenbergs Uncertainty Principle sort of explains this in physics, It says that we cannot know things precisely, the best we can do is calculate probabilities.
After all, the common interpretations of aspects of quantum theory -- things like wavea"particle duality, superposition, the uncertainty principle, and the many-worlds interpretation -- are often misleading, Ball reveals.
David's explanations about the album's themes and content could come off as too academic for public consumption-after all, how many music lovers out there are familiar with the concept of the Heisenberg Uncertainty Principle or Zeno's paradox?
7 Mar Allan Gyngell AO (national president, Australian Institute of International Affairs), "The Uncertainty Principle: New Zealand and Australia in a Changing World'.
The uncertainty principle of Heisenberg states that the uncertainty in momentum ([DELTA]p) times the uncertainty in position ([DELTA]x) must be greater than or equal to half the reduced Planck's constant
The occurrence of such a minimal length also arises in various theories of quantum gravity phenomenology, namely, the generalized uncertainty principle (GUP) [5, 7, 8], modified dispersion relation (MDR) [9-12], and deformed special relativity (DSR) [13], to name a few.
And, as we have known, the study of commutation relations between position and momentum operators is explained using Heisenberg uncertainty principle [9], which is given by
On the other hand, the uncertainty principle plays one important role in signal processing.
Gosson (University of Vienna) proposes new concepts from symplectic topology as the proper setup for a better understanding of the twilight zone between quantum and classical properties, and shows how symplectic geometry and its topological extensions allow physicists to state and prove a classical multi-dimensional uncertainty principle formally similar to the quantum uncertainty relations.
"It may well make it to TV," says the 72-year-old, who is appearing in West End play Heisenberg: The Uncertainty Principle. But he says: "The only downside is given my age I very much doubt they'll cast me in the TV spin-off."
Heisenberg's Uncertainty Principle (1): The position and the velocity of an object cannot both be measured exactly, at the same time, even in theory.