Scattering of Light
When light passes through a medium in which particles are suspended whose size is of the order of wavelength of light, then light on striking these particles, deviated in different directions. These phenomena is called scattering of light.
According to the Lord Rayleigh, the intensity of scattered light
I ∝ 1 / λ 4
Therefore, red colour of light is scattered least and violet colour of light is scattered most.
Daily Life Examples of Scattering of Light
1. Blue colour of sky. 2. Red colour of signals of danger. / 3. Black colour of sky in the absence of atmosphere 4. Red colour of the time of sun rise and sun set.
The human eye is most sensitive to yellow colour