Scatter light of bubble and the distribution of bubble size

The scattering light of bubble is analysed from the point of view of geometry optics,from which it is concluded that the fluctuation of light intensity has some relation with the diameter of bubbles.Using this relation and adopting the light intensity detecting method,the light intensity through the wall of bubbles is collected,the dimension of bubbles and its distribution is deduced based on the analysis of fluctuatation of light intensity.This method is brief and needs less data than other detecting methods.