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You searched for "uncertainty principle"
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Uncertainty Principle
Information on this concept and links to related subjects. The position and momentum of a particle cannot be simultaneously measured with arbitrarily high precision.
Basic definitions of uncertainty
The determination of uncertainty when taking measurements is discussed and explained.
Werner Heisenberg
Detailed biography of Heisenberg and his works including links to pages on the uncertainty principle and quantum mechanics.
NPL Beginners' Guide - Traceability and Uncertainty
An overview of accuracy, traceability, and uncertainty.
Werner Karl Heisenberg
Werner Karl Heisenberg (1901 - 1976) name will always be associated with his theory of quantum mechanics (published in 1915, when only 13 years old) and his uncertainty principle.
The Principle of the Rocket
Here NASA explain how the principle of centre of mass is applied to produce the motion of rockets.
Archimedes' principle
This site gives a colourful description of Archimedes principle, buoyancy, density and specific gravity.
Pauli Exclusion Principle
No two electrons in an atom can have identical quantum numbers. This is an example of a general principle which applies not only to electrons but also to other particles of half-integer spin ...