Unobservable

While the Greeks' assumption that (unobservable) Homeric gods exist is false, and our supposition of (unobservable) electromagnetic waves is true, both are to be justified solely by their ability to explain our observations.

When quoted prices or observable market data are not readily available, fair values are estimated using appropriate valuation models and unobservable inputs.

Mercury and Venus remain unobservable, but Mars, Jupiter and Saturn can be detected in the sky again.

Never mind that many factors in Nordhaus’s analysis are unobservable, and those that are observable have impacts and interactions that are either unstable or unmeasurable.

However, an adjustment that uses significant unobservable inputs can lead to categorisation in Level 3 if it is significant to the measurement as a whole.

Protests are likely to occur alongside other changes in society, and it is difficult to disentangle whether they cause "political" change or simply reflect unobservable changes in preferences and beliefs, (underline "political").

Although parts of the constellation technically rise above the horizon to observers between the 49°N and 65°N, stars within a few degrees of the horizon are to all intents and purposes unobservable.

An image taken at the Anglo-Australian Telescope in 1993 was found to show the then-unnoticed comet some 13 AU from the Sun, citation a distance at which most comets are essentially unobservable.

Diastolic blood pressure is non-palpable and unobservable by tactile methods, occurring between heartbeats.

Heisenberg's paper did not admit any unobservable quantities like the exact position of the electron in an orbit at any time; he only allowed the theorist to talk about the Fourier components of the motion.

If a state is not observable, the controller will never be able to determine the behaviour of an unobservable state and hence cannot use it to stabilize the system.

In this view, the uniformity of scientific laws is an unprovable postulate which enables scientists to extrapolate into the unobservable past.

Observation schedules are typically finalized only a few days in advance, as a longer lead time would mean there was a chance that the target would be unobservable by the time it was due to be observed.

Solutions to problems of uncontrollable or unobservable system include adding actuators and sensors.

Such identification from the output, however, cannot take account of unobservable dynamics.

The fact that stellar parallax was so small that it was unobservable at the time was used as the main scientific argument against heliocentrism during the early modern age.

The interpretation of the no-hair theorem is that the Universe (observable and unobservable) expands by an enormous factor during inflation.

Then an observation term cannot be applied to something unobservable.

The observable universe is one causal patch of a much larger unobservable universe; other parts of the Universe cannot communicate with Earth yet.

There is no consensus among philosophers about many of the central problems concerned with the philosophy of science, including whether science can reveal the truth about unobservable things and whether scientific reasoning can be justified at all.