Complementarity, Principle of

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Complementarity, Principle of

 

a principle formulated by N. Bohr that played an important role in the formulation of quantum mechanics. According to the principle, the obtaining of experimental data on certain physical quantities describing microobjects (for example, atoms and electrons) produces changes in quantities complementary to them. The coordinate and momentum of a particle, for example, are two such mutually complementary quantities. The principle of complementarity corresponds to the uncertainty principle, the mathematical expression of which is the uncertainty relation.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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