deletions | additions       diff --git a/For_a_circular_coil.tex b/For_a_circular_coil.tex  index 3a03b36..e5f8313 100644  --- a/For_a_circular_coil.tex  +++ b/For_a_circular_coil.tex 
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The displacement $\mathbf{u}$ can then propagates as a shear wave with a velocity $c_s = \sqrt{\mu/\rho}$ \cite{sarvazyan1998shear}.  \section{Material and methods}  In the experimental setup, pictured in Figure \ref{Figure2}, the electrical current was induced by a TMS device using a 2x75 mm diameter butterfly coil (MagPro R100 device with C-B60 Butterfly coil, MagVenture, Farum, Danemark). The coil was placed 1 cm away from the medium, without any contact, and fixed to an independent support. The electrical current in the coil was in "monophasic" mode, i.e., an half cycle of 0.4 ms, and reached a magnitude of 159 A.$\mu$s$^{-1}$.