What is tyndall effect? Explain its cause. Why this effect is not observed in copper sulphate solution but observed in milk
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Tyndall effect is due to scattering of light by the particles
copper sulphate crystals are highly soluble in water and they form a true solution in water. Their particles size is very small so they do not scattering beam of light and does not show Tyndall effect
Howere milk and water is an heterogeneous mixture and is a colloid sollution. Particles size is big enough to scatter beam of light so Tyndall effect is visible
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The Tyndall effect, also known as Willis–Tyndall scattering, is light scattering by particles in a colloid or in a very fine suspension. It is caused by reflection of the incident radiation from the surfaces of the particles, reflection from the interior walls of the particles, and refraction and diffraction of the radiation as it passes through the particles. Other eponyms include Tyndall beam (the light scattered by colloidal particles). Copper sulphate (CuSo4) solution in water does not show tyndall effect the particles of solution are very small to be able to make the light path visible whereas a milk is a colloid while particle size is big enough to scatter a beam of light and make the path visible.
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