Tyndall Effect
Tyndall observed this phenomenon in
1869. He observed that when a beam of
light is allowed to pass through a colloidal solution, the path of light gets
illuminated. This phenomenon is known as Tyndall Effect. It occurs because light is
scattered by particles present in colloidal solution. The intensity of the scattered
light depends on the difference between the refractive indices of the dispersed
phase and the dispersion medium. Greater is the difference, greater the intensity of
light.
light is allowed to pass through a colloidal solution, the path of light gets
illuminated. This phenomenon is known as Tyndall Effect. It occurs because light is
scattered by particles present in colloidal solution. The intensity of the scattered
light depends on the difference between the refractive indices of the dispersed
phase and the dispersion medium. Greater is the difference, greater the intensity of
light.
Brownian Movement
There are continuous collisions between the colloidal particles and molecules ofdispersion medium which are in constant motion and passes kinetic energy to colloidal
particles by striking it from all sides. This results into zigzag movement of colloidal