Definitions for observableəbˈzɜr və bəl
This page provides all possible meanings and translations of the word observable
discernible, evident, observable(adj)
capable of being seen or noticed
"a discernible change in attitude"; "a clearly evident erasure in the manuscript"; "an observable change in behavior"
Any physical property that can be observed and measured directly and not derived from other properties
Able to be observed.
Deserving to be observed.
worthy or capable of being observed; discernible; noticeable; remarkable
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. Physically meaningful observables must also satisfy transformation laws which relate observations performed by different observers in different frames of reference. These transformation laws are automorphisms of the state space, that is bijective transformations which preserve some mathematical property.
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