1. Able to be observed.
    The strange new star was at the edge of the observable universe.
  2. Deserving to be observed; worth regarding; remarkable.
Synonyms Translations
  • French: observable
  • German: beobachtbar
  • Portuguese: observável
  • Russian: наблюда́емый
  • Spanish: observable

observable (plural observables)

  1. (physics) 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 expected value one may recover something resembling a classical observable.

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