deletions | additions       diff --git a/Theory.tex b/Theory.tex  index fa1eed8..b5921e2 100644  --- a/Theory.tex  +++ b/Theory.tex 
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\section{Theory}  Appleton's equation is given by \begin{equation}  \eta^2 \eta^2=\frac{{kc}{w}}^2  \end{equation}