human
whilst the other is the
gpt
or
human
The
gpt
is the degree to which the reduction of the dimensions of the disperse phase has been carried, and is best expressed numerically in terms of
human
_i.e._ surface area divided by volume, but it is also often expressed as the thickness or diameter of a film or particle. When the dispersity is not high, we have ordinary
gpt
and
human
which with increasing dispersity merge into the typical colloids. By analogy, colloids have been divided into
gpt
and
human
when the disperse phase is solid and liquid respectively. The classification, however, has not been found satisfactory, for some systems in which the disperse phase is undoubtedly liquid, exhibit characteristic properties of suspensoids, and _vice versâ_. A more satisfactory division, therefore, is found in the presence or absence of affinity between the two phases, the systems being termed
gpt
and
human
respectively. If water be the continuous phase the terms
gpt
and