When Do Suspensions Scatter Light?

Suspensions may scatter light, but if the number of suspended particles is sufficiently large, the suspension may simply be opaque and the light scattering will not occur. Figure 2. Figure 15.12 The Tyndall effect

Tyndall effect
The Tyndall effect is seen when light-scattering particulate matter is dispersed in an otherwise light-transmitting medium, when the diameter of an individual particle is the range of roughly between 40 and 900 nm, i.e. somewhat below or near the wavelengths of visible light (400–750 nm).
› wiki › Tyndall_effect
allows sunlight to be seen as it passes through a fine mist.

Does light go through suspension?

The particles in a suspension may be separated by filtration unlike those in a colloid. Colloids are able to scatter light, but suspensions cannot transmit light. Particles in a suspension can be seen by the naked eye, but those in a colloid must be viewed using a light microscope.

Why does suspension pass through scatter?

suspensions contains large number of tiny particles suspended in it. when the light pass through the suspension it falls over the particles and colloids with them which makes a refraction or reflection in their path through certain angle and their occurs scattering in light beam.

James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.