observable

The strange new star was at the edge of the observable universe.

In 1913, in the same year that Mother's Day became a nationally observable holiday, the American people passed another milestone: for the first time in American history more than one person in one tho

Although intellectual property rights, such as patents, are highly observable, they are mostly limited to product technologies. Process technologies, or the routines endemic in the firm's production,

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

Isolated material particles are abstractions, their properties being definable and observable only through their interaction with other systems.