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TYNDALL EFFECT: LIGHT BEAM IS VISIBLE IN A COLLOID<br />
Light Scattering By Colloidal Particles<br />
Colloidal particles are so small that  bombardment by the molecules of the medium keeps the particles in suspension. Their random motion is Brownian motion. Like particles in a solution, colloidal particles pass through ordinary filters.

Fphoto-31579204E-2RM.jpg

TYNDALL EFFECT: LIGHT BEAM IS VISIBLE IN A COLLOID
Light Scattering By Colloidal Particles
Colloidal particles are so small that bombardment by the molecules of the medium keeps the particles in suspension. Their random motion is Brownian motion. Like particles in a solution, colloidal particles pass through ordinary filters.

Copyright:© 1992 Richard Megna - Fundamental Photographs

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Richard Megna