The Formation of Colloids (Classic Reprint) - Hardcover

Inhaltsangabe

Excerpt from The Formation of Colloids

The primary condition for condensation is the existence of a system of higher dispersity than the one desired. If such a system, most often a molecular one, is to be produced from condensed material, this generally means the establishment of a forced process vaporization of compact metal in the electric arc). It is only then that the spontaneous process can begin to act (condensation of the metal gas to metal powder). The secondary condition for obtaining by condensation a disperse system with more than a merely ephemeral existence is the breaking of or the retardation of the condensation process after having reduced the surface of the system to a suitable extent.

The primary condition for dispersion is the occurrence of a condensed system of a lower degree of dispersion than the one desired. This low degree of dispersion can always be attained by means of a spontaneous process. The secondary condition for obtaining a somewhat stable disperse system is the prevention or the retardation of the spontaneous retrogression of the dispersion process.

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