# quantum mechanics meaning

**Noun:****quantum mechanics**'kwóntum mu'kaniks- The branch of quantum physics that accounts for matter at the atomic level; an extension of statistical mechanics based on quantum theory (especially the Pauli exclusion principle)

**Type of:**quantum physics**Encyclopedia:**Quantum mechanics Quantum mechanics, philosophy and controversy

[Electronics]

A branch of physics concerned with the behavior of matter and energy, on the basis of observable data.

[Medicine]

n pl but sing or pl in constr**:**a theory of matter that is based on the concept of the possession of wave properties by elementary particles, that affords a mathematical interpretation of the structure and interactions of matter on the basis of these properties, and that incorporates within it quantum theory and the uncertainty principle —called also*wave mechanics*—**quantum mechanical**adj —**quantum mechanically**adv

- mechanics: Noun: mechanics&nb ...
- quantum: Noun: quantum (qua ...
- aeroplane mechanics: Noun: aeroplane me ...

### Examples

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- course 1 makes heavy use of
*quantum mechanics*. *quantum mechanics*is basically statistical in nature.*quantum mechanics*is an unambiguous and quantitative theory.- these results are derivable from the theory of
*quantum mechanics*. - in
*quantum mechanics*the particle need not have a definite energy.