Jayvardan Aananthan , asked a question
Subject: Science , asked on 16/12/12

What is scattering of light ?


Hansraj Rai , Meritnation Expert added an answer, on 17/12/12

Scattering is the phenomenon by which a beam of light is redirected in many different directions when it interacts with a particle of matter.

For example - when sunlight strikes molecules in our atmosphere, the light is redirected in many directions. The blue light is scattered more than the red light causing the sky to be blue.

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Anil Kumar , added an answer, on 16/12/12
11 helpful votes in Science

the phenomenon of change in the direction of propagation caused by the large number of molecules such as smoke, tiny water droplets, suspended particles of dust and air molecules present in the atmosphere is called scattering of light.

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Pradeepa Sia , added an answer, on 16/12/12
19 unhelpful votes in Science

The phenomena of change in the direction of propagation of light caused by large number of molecules such as smoke , water droplets   is called scattering of light 

hope it helps u thumbzz up plz

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Suchita Rajoria , added an answer, on 16/12/12
131 helpful votes in Science

 The spreading (or scattering) of light by particles in a mixture(like air, etc.) is called scattering of light. 

There are many particles in the atmosphere (big ones like particles of fog & small ones like particles of gases which are not visible to the naked eyes). They are the ones responsible for the scattering of light.

Do you know that sunlight consists of 7 lights/colours (violet, indigo, blue, green, yellow, orange & red(i.e.,VIBGYOR))? Well, it does...
There's more. The light in the violet region have shorter wavelength(you must have studied about wavelengths in IX std.) than the lights in the red region.
Now it's time for the main answer of your Question.

The atmosphere consists of particles of different sizes. Very fine particles like the molecules of air, etc. having sizes smaller than the wavelength of visible light scatter light in the blue region and not red. So the red colour of the sun doesn't spread in the atmosphere making the sun appear red itself. But there's more. Sunlight also consists of lights in the Blue region. It is this light which is scattered by fine particles of the atmosphere. And this scattered around blue light(scattered in the sky), enters our eye. So, we feel the sky blue...

By the way, the sky doesn't appear red, as red is not scattered and appear to remain around the sun...( This is mainly during morning & evening)

hope it helps....!!!!!

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