Sentence examples for difficulties of observing from inspiring English sources

Because of the practical difficulties of observing this often once-in-a-lifetime event, studying the transfer phase of dispersal remains especially difficult.

Robert Hooke, working with a small-lensed refracting telescope in 1666, described the difficulties of observing Mars: "I could find nothing of satisfaction, though I often imagin'd, I saw Spots, yet the inflective veins of the Air... did make it confus'd and glaring, that I could not conclude upon any thing".

This is, at least in part, due to the technical difficulties of observing and quantifying the peripheral component of the oxygen flux process.

The incubation period is not well known, due to the difficulty of observing nests, but observations indicate around 30 days from laying to hatching.

The incubation period is poorly known because of the difficulty of observing nests, but one observation suggested around 23 days from laying to hatching.

These redshifts correlate well with the difficulty of observing such galaxies with redshift - currently at z < 0.9 observations are straightforward, at 0.9 < z < 1.2 observations are possible but increasingly difficult, and at z > 1.2 observations rapidly become extremely difficult.

Given the difficulty of observing documentation procedures in the rush to dispose of the dead, it was considered unlikely that a definitive total would ever be established.

Determining when a slope will fail is a considerably more difficult challenge, largely due to the difficulty of observing or predicting the processes of material strength degradation.

Pore space geometry and topology influence flow through media, but the difficulty of observing the configurations of real pore spaces limits understanding of their effects.

Because of the difficulty of observing the precise tongue positions that occur in vowels, a set of eight vowels known as the cardinal vowels has been devised to act as reference points.

The difficulty of observing the lower corona should not be underestimated since instrumental stray light remains a critical issue in the visible because of the low contrast of the corona with respect to the Sun.