OBSERVABLE

Observable

In physics, particularly in quantum physics, a system observable is a measurable operator, or gauge, where the property of the system state can be determined by some sequence of physical operations. For example, these operations might involve submitting the system to various electromagnetic fields and eventually reading a value off some gauge. In systems governed by classical mechanics, any experimentally observable value can be shown to be given by a real-valued function on the set of all possible system states.

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observable

Noun

  1. Any physical property that can be observed and measured directly and not derived from other properties
    Temperature is an observable but entropy is derived.
    In quantum mechanics, observables correspond to Hermitian operators. Also, they act a lot like random variables. Taking their average one may recover something resembling a classical observable.

Adjective

  1. Able to be observed.
  2. Deserving to be observed.


The above text is a snippet from Wiktionary: observable
and as such is available under the Creative Commons Attribution/Share-Alike License.

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