Uncertainty principle

In quantum physics, the Heisenberg uncertainty principle, expresses a limitation on accuracy of (nearly) simultaneous measurement of observables such as the position and the momentum of a particle. It furthermore precisely quantifies the imprecision by providing a lower bound (greater than zero) for the product of the standard deviations of the measurements. The uncertainty principle is one of the cornerstones of quantum mechanics and was discovered by Werner Heisenberg in 1927.

Related Topics:
Quantum physics - Measurement - Observable - Momentum - Standard deviation - Quantum mechanics - Werner Heisenberg - 1927

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It is sometimes called the Heisenberg indeterminacy principle (a name prefered by Niels Bohr).

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