"clear observation" is a perfectly usable phrase in written English.
You can use it to refer to something that has been seen, heard, or noticed that is evident and unmistakable. For example, "The research team's clear observation of the data confirmed that the drug was effective."
Ausubel's original voice combines fresh, clear observation and Old Testament grandeur.
His book on the Aran Islands is a model of close, clear observation; it has also a reticence and introspection.
It was in no way a challenge to the clear observation that global temperatures were rising sharply.
The width of the fracture is zoomed for clear observation.
b Water and gasoil mixture (gasoil was colored with Sudan III for clear observation).
The recent creation of a meteorological center does not allow clear observation of forecast improvement.
The songs did not promise solace, only clear observations and new questions.
Astronomers said the first clear observations of such a stream of stars supported theories that the so-called globular clusters of stars, among the earliest objects in the universe, were once denser and even more numerous but have been depleted or destroyed by tidal forces like those of the Milky Way, Earth's galaxy.
Otherwise, a less sophisticated reader like me, would believe this is just a word game between reporters and the people they cover and reporters are choosing which term to use based on the reaction they get from government sources, not their own clear observations.
Lenormand et al. (1983) reported that chemically etched networks on glass plates give clear observations, but the shape of the ducts is not well defined.
Specifically, we tested the usefulness of seasonal image composites (spring, summer, fall, and winter) and a range of image metrics (e.g., mean and median reflectance across all clear observations) to map nine land-cover classes with a Random Forest classifier.
