Why lyophilic colloids do not show tyndall effect?
1. Tyndall effect occurs due to scattering of light by the colloidal particles.
2. Scattering occurs to a large extent when there is difference between the refractive indexes of the dispersed phase and dispersion medium.
3. If difference is more the scattering is pronounced and vice versa.
4. In the case of lyophilic colloids there is not much difference in the refractive index of the two,so scattering is very less and Tyndall effect is almost unobservable in such cases.
2. Scattering occurs to a large extent when there is difference between the refractive indexes of the dispersed phase and dispersion medium.
3. If difference is more the scattering is pronounced and vice versa.
4. In the case of lyophilic colloids there is not much difference in the refractive index of the two,so scattering is very less and Tyndall effect is almost unobservable in such cases.