explain tyndall effect more deeply
What Vaibhav has written is absolutely correct. Let me elaborate this for more clear understanding.
The scattering of light by the colloidal particles is known as Tyndall effect. Actually, it is the visible scattering of light along the path of a beam of light as it passes through a system containing discontinuities, such as the surfaces of colloidal particles in a colloidal solution.
Tyndall scattering occurs when the dimensions of the particles that are causing the scattering are larger than the wavelength of the radiation that is scattered.
It is caused by reflection of the incident radiation from the surfaces of the particles, refraction and diffraction of the radiation as it passes through the particles.
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