observable

Plural: observables

Adjective Satellite

• capable of being seen or noticed
  • "an observable change in behavior"

Adj

• Able to be observed.
• Deserving to be observed; worth regarding; remarkable.

Noun

• Any physical property that can be observed and measured directly and not derived from other properties

Examples

• 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.
• Temperature is an observable but entropy is derived.
• The strange new star was at the edge of the observable universe.

Synonyms

discernible, evident, eminent, notable, noteworthy, noticeable, perceivable, perceptible

Anagrams of observable