tyndall effect?

Answer 1

The term Tyndall effect is usually applied to the effect of light scattering on particles in colloid systems, such as suspensions or emulsions. It is named after the Irish scientist John Tyndall. The Tyndall effect is used to differentiate between the different types of mixtures namely solution, colloid and suspension. For example, the Tyndall effect is noticeable when car headlamps are used in fog. The light with shorter wavelengths scatter better, thus the color of scattered light has a bluish tint. This is also the reason as to why the sky looks blue - the light from the sun is scattered and we see the blue light because it scatters better.

This effect occurs because short wavelengths of light towards the blue end of the spectrum hit the coloidal particles in the earths atmosphere and are reflected down to the earths surface. Longer wavelengths towards the red end of the spectrum are not affected by the particles and pass on through the earths atmoshpere. This causes blue light to be reflected down to the earths surface which makes the sky appear blue.

in short =
The reflection of light beam passing through a colloid which identifies the presence of suspended particles.


hope this helps

Answer 2

I always wondered why the sky is blue!!! Now I know, thanks to a question by you.

Light reflects off water in the sky. The Tyndall Effect describes the property of blue wavelengths (shorter than red) scattering more widely than wavelengths associated with other colors when light is passed through a clear liquid.

Answer 3

The Tyndall Effect is caused by reflection of light by very small particles in suspension in a trasnparent medium. It is often seen from the dust in the air when sunlight comes in through a window, or comes down through holes in clouds.