Scattering experiment to understand why sky is blue

Apparatus :
A. Transparent glass container filled with milk-water mixture.
B. Flashlight
C. LASER light source of different wavelength
D. Cuvette
E. Photodiode detector
F. Oscilloscope

Procedure in laboratory (diagram) :



Procedure in laboratory :


Data and Analysis :
The scattering intensity for each different incident wavelength is measured which is given below in table.



The scattering light intensity, I, is plotted against λ (wavelength of incident light) which is shown in the figure below. This plot fits very well with the equation, I=c*(1/λ)4, where ‘c’ is the fitting constant.



Analysis :

  1. Determine the dependence of incident light wavelength on scattering light intensity.
  2. Check if it follows (1/λ)4 dependency.