Properties of colloidal dispersions
Most of the liquids of living beings are colloidal dispersions, hence it is important to see some of their properties:
Tyndall effect
The colloidal dispersions are transparent, but when illuminated laterally on a dark background turbidity is observed as colloidal particles, due to their size, scatter light. On the contrary, in true solutions and gases without suspended particles they are transparent, since they practically do not scatter light.