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Qu'est-ce (qui) est OBSERVABLE - définition

IN PHYSICS, A DYNAMIC VARIABLE THAT CAN BE MEASURED

Observables; Physical observables; Incompatible observables; Incompatible Observables; Observable (quantum computation); Observable quantities; Observable (physics); Quantum observable

observable

Something that is observable can be seen.

Mars is too faint and too low in the sky to be observable.

ADJ

Observable

·adj Worthy or capable of being observed; discernible; noticeable; remarkable.

observable

a.

Noticeable, remarkable, marked, striking, noteworthy.

Wikipédia

Observable

In physics, an observable is a physical quantity that can be measured. Examples include position and momentum. In systems governed by classical mechanics, it is a real-valued "function" on the set of all possible system states. In quantum physics, it is an operator, or gauge, where the property of the quantum state can be determined by some sequence of operations. For example, these operations might involve submitting the system to various electromagnetic fields and eventually reading a value.

Physically meaningful observables must also satisfy transformation laws that relate observations performed by different observers in different frames of reference. These transformation laws are automorphisms of the state space, that is bijective transformations that preserve certain mathematical properties of the space in question.

https://en.wikipedia.org/wiki/Observable

Exemples du corpus de texte pour OBSERVABLE

1. Science can be proved on the basis of observable data.

2. Science can be disproved, or falsified, on the basis of observable data.

3. "It‘s never been proved right on the scale of the observable universe," Spergel said.

4. The impact split normal matter and dark matter apart, rendering the dark matter‘s gravitational presence observable.

5. The unbalanced distribution has had observable effects on the aid effort.