deletions | additions       diff --git a/figures/Mercury_fits/caption.tex b/figures/Mercury_fits/caption.tex  index 6a884f7..754cdcb 100644  --- a/figures/Mercury_fits/caption.tex  +++ b/figures/Mercury_fits/caption.tex 
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\begin{centering}  \textbf{Figure 6}  \end{centering}   \par Franck-Hertz curve recorded for Mercury atoms at a single temperature. Again "V" is the measured anode current, converted to an output voltage using a current preamplifier. The graph shows how the background data was removed from the initi al curve.The  blue line is the actual collected  Mercury data, the green line shows the quadratic fit of the original collected  Mercury data, and the orange line is the original "true"  Mercury data with the quadratic fit subtracted. without background.