However, this is not an easy task in view of the scarceness and opacity of relevant sources from the period before the seventeenth/eighteenth centuries.
In sum, this is how non-surface-apparent opacity is addressed with sympathy.
Both kinds of opacity, non-surface-apparent and non-surface-true, are subsumed under sympathy theory.
Opacity measurements; extending the range and filling the gaps.
This water is of a milky opacity, and does not become clear after standing.
This is typical of non-surface-true opacity : the intended output form violates a markedness constraint without visible motivation.
This method measures opacity variations caused by voids and surface features.
In the cases they examine, they do not find evidence that the strata required to treat opacity are independently motivated.
