deletions | additions       diff --git a/The_sample_was_then.tex b/The_sample_was_then.tex  index 6a9828d..574c32b 100644  --- a/The_sample_was_then.tex  +++ b/The_sample_was_then.tex 
...
The sample was then replaced by a similar phantom except that cellulose particles were used instead of graphite particles: thus, the phantom presented a weak optical absorption but a comparable speckle pattern. A black disk of variable diameter was painted on a surface of the phantom at the laser beam impact location, to control the absorption area. The amplitude of the induced shear waves versus black disk diameter in the second phantom is illustrated in Fig. \ref{Figure4}-(B). We observe a linear relationship between shear wave amplitude and black disk diameter, with a correlation coefficient of 0.9281.% 0.9281. We also measured shear wave frequency was equal to 500 $\pm$ Hz over the 23 experiments. %  The resulting shear waves have same propagation pattern as in the first phantom, meaning that most of the energy was absorbed in the first hundreds of micrometers (thickness of the black paint) in both cases. %Two other parameters have been investigated, and showed no correlation: (1) correlation coefficient between shear wave wavelength and diameter of the black paint is 0.27, and between shear wave speed and diameter is 0.089. These results were expected, as shear wave wavelength depends primarily on thermal conductivity value of the medium, and shear wave speed on shear modulus of the medium, which were constant parameters in these experiments. 
...