ABSTRACT
Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Subdivision of Particles and
the Colloidal State . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Colloid Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . 3
History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Colloid science is generally understood to be the study of
systems containing kinetic units which are large in com-
parison with atomic dimensions [1]. Such systems may
be those in which the particles are free to move in all direc-
tions, or they may be derived systems, as a coagulum or a
gel (discussed subsequently), in which the particles have
lost their mobility either partially or entirely, but have
maintained their individuality.
