deletions | additions       diff --git a/Experimental setup cont.tex b/Experimental setup cont.tex  index f3d7fb1..694bc08 100644  --- a/Experimental setup cont.tex  +++ b/Experimental setup cont.tex 
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The probe whiskers are very short so it is assumed that the potential is measured at that point. The whiskers will measure $E_{x}=-\frac{\partial{\phi}}{\partial{x}}$ $E_{x}=-\frac{\partial{\phi}}{\partial{x}}$.