Question

Who invented colloidal state?

Answer 1

Colloid science concerns systems in which one or more of the components has at least one dimension within the nanometre (10-9m) to micrometre (10-6m) range, i.e. it concerns, in the main, systems containing large molecules and/or small particles. The adjective 'microheterogeneous' provides an appropriate description of most colloidal systems. There is, however, no sharp distinction between colloidal and non-colloidal systems.