View synonyms for observable

observable

[ uhb-zur-vuh-buhl ]

Phonetic (Standard)IPA

adjective

capable of being or liable to be observed; noticeable; visible; discernible:
an observable change in attitude.
worthy or important enough to be celebrated, followed, or observed:
an observable holiday.
deserving of attention; noteworthy.

observable

/ əb-zûr′və-bəl /

A measurable property of a physical system, such as mass or momentum. In quantum mechanics, observables correspond to mathematical operators used in the calculation of measurable quantities. Operators that do not commute , having a nonzero commutator , correspond to observables that cannot be precisely measured at the same time, such as momentum and position.
See also uncertainty principle

1600–10; < Latin observābilis remarkable, equivalent to observā ( re ) to observe + -bilis -ble

The observable Universe contains around 100 billion large galaxies and a comparable number of supermassive black holes.

All ISIS logistics and dispositions in the field are observable by drone and satellite.

Theory: a scientifically acceptable principle explaining a set of observable facts.

Global warming is an observable fact, and transportation emissions are the second largest contributor to the problem.

How has this soldier demonstrated recurring actions, patterns, or observable behaviors that might indicate his real beliefs?

And on these faces, there was a certain pettiness and coldness not observable on those of the poorer women.

Algernon spoke with his old bright smile; but two things were observable throughout this interview.

We must reason from laws of nature; from the uniformities which are observable in the fact of likeness or unlikeness.

A groove or depression is commonly observable in the stone, designed to receive the string.

A drift of thought—an elevation of style, is observable in their public speaking which is dropt in private conversation.

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