indeterminacy principle
Definition
Noun: - A fundamental principle in quantum mechanics: The indeterminacy principle states that there is a fundamental limit to the precision with which certain pairs of physical properties of a particle, known as complementary variables, can be known simultaneously. The most famous pair is position and momentum.
Usage
The term is used in the context of physics, specifically quantum theory, to describe a core theoretical limit on measurement. - It is often introduced with the definite article: the indeterminacy principle. - It is synonymous with the uncertainty principle.
Examples
Advanced Usage
- Heisenberg indeterminacy principle: A more specific name, attributing the principle to physicist Werner Heisenberg.
- The Heisenberg indeterminacy principle is a cornerstone of modern physics.
Variants and Related Words
- Uncertainty principle: The more common synonym for "indeterminacy principle." They are used interchangeably in physics.
- Principle of indeterminacy: A less common variant with the same meaning.
Synonyms
- Uncertainty principle: The standard synonym.
- Heisenberg uncertainty principle: The full, attributed name.
Related Concepts (Not Compound Words)
- Complementarity: A related philosophical and physical concept stating that objects have complementary properties which cannot be observed or measured simultaneously.
- Quantum mechanics: The branch of physics in which the indeterminacy principle is a foundational tenet.
- Wave-particle duality: A concept closely connected to the implications of the indeterminacy principle.
Noun
-
(quantum theory) the theory that it is impossible to measure both energy and time (or position and momentum) completely accurately at the same time
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