observable
Able to perceive
Observable describes something that can be seen, noticed, or measured: There was no observable change in her condition.
The word emphasizes detectability—what's observable is available to the senses or instruments rather than hidden or theoretical.
In science, observable phenomena are those that can be empirically verified.
In programming, an observable is a data source that emits values over time, which other code can subscribe to and react to.
Able to be sensed
- discernibleAble to be noticed
- noticeableEasily perceived or observed
- visibleAble to be seen
- apparentClearly seen or understood
recognizable · manifest · palpable · tangible · audible · perceivable · evident · clear
Able to be gauged
- quantifiableAble to be measured
- verifiableAble to be proven
- testableAble to be examined
- recordableAble to store data
data · evidence · experiment · research · phenomenon · measurement · metrics · parameters
One who works machinery
- eigenvalueScalar satisfying determinant equation
- measurementDetermining size or amount
- expectationBelief about future outcomes
- commutatorRotating contact that reverses current
spectrum · wavefunction · superposition · collapse · probability · amplitude · projection · eigenstate
perceptible
Able to be sensed
- discernibleAble to be noticed
- noticeableEasily perceived or observed
- visibleAble to be seen
apparent · recognizable · manifest · palpable · tangible · audible · perceivable · evident · clear · distinct
measurable
Able to be gauged
- quantifiableAble to be measured
- verifiableAble to be proven
- testableAble to be examined
recordable · data · evidence · experiment · research · phenomenon · measurement · metrics · parameters · methodology
operator
One who works machinery
- eigenvalueScalar satisfying determinant equation
- measurementDetermining size or amount
- expectationBelief about future outcomes
commutator · spectrum · wavefunction · superposition · collapse · probability · amplitude · projection · eigenstate · diagonalization
- lab qualitiessterile, calibrated, controlled, precise, accurate
- real-worldreality, facts, actual, genuine, tangible
- macroscopicvisible, naked eye, large-scale, bulk, perceptible
- quantum physicsquantum mechanics, quantum superposition, quantum state, quantum states, quantum entanglement
- quantum measurementmeasurement problem, eigenstate, eigenvalue, quantum state, detector
- measurable qualitiesmeasurable, countable, calculable, numerical, computable
observableunobservable
Cannot be detected
imperceptible · undetectable · invisible · inaudible · intangible
observabletheoretical
Based on hypothesis, untested
hypothetical · conjectural · speculative · inferred · latent
- observable universeRegion light has reached us from
unobservable, observably, observability, observable universe