the scattering of light by colloids is known as tyndall effect.
it is named after the scientist who discovered it.
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This is because there are solid particles suspended in the
mixture although it is more stable than a suspension.
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john tyndall
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Colloidal particles can be detected by the Tyndall effect
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The Tyndall effect, or Tyndall scattering, was named after 19th
century physicist John Tyndall. It has to do with light scattering
through particles in a suspension.